summaryrefslogtreecommitdiff
path: root/arch
AgeCommit message (Collapse)Author
2024-01-25Merge tag 'net-6.8-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Paolo Abeni: "Including fixes from bpf, netfilter and WiFi. Jakub is doing a lot of work to include the self-tests in our CI, as a result a significant amount of self-tests related fixes is flowing in (and will likely continue in the next few weeks). Current release - regressions: - bpf: fix a kernel crash for the riscv 64 JIT - bnxt_en: fix memory leak in bnxt_hwrm_get_rings() - revert "net: macsec: use skb_ensure_writable_head_tail to expand the skb" Previous releases - regressions: - core: fix removing a namespace with conflicting altnames - tc/flower: fix chain template offload memory leak - tcp: - make sure init the accept_queue's spinlocks once - fix autocork on CPUs with weak memory model - udp: fix busy polling - mlx5e: - fix out-of-bound read in port timestamping - fix peer flow lists corruption - iwlwifi: fix a memory corruption Previous releases - always broken: - netfilter: - nft_chain_filter: handle NETDEV_UNREGISTER for inet/ingress basechain - nft_limit: reject configurations that cause integer overflow - bpf: fix bpf_xdp_adjust_tail() with XSK zero-copy mbuf, avoiding a NULL pointer dereference upon shrinking - llc: make llc_ui_sendmsg() more robust against bonding changes - smc: fix illegal rmb_desc access in SMC-D connection dump - dpll: fix pin dump crash for rebound module - bnxt_en: fix possible crash after creating sw mqprio TCs - hv_netvsc: calculate correct ring size when PAGE_SIZE is not 4kB Misc: - several self-tests fixes for better integration with the netdev CI - added several missing modules descriptions" * tag 'net-6.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (88 commits) tsnep: Fix XDP_RING_NEED_WAKEUP for empty fill ring tsnep: Remove FCS for XDP data path net: fec: fix the unhandled context fault from smmu selftests: bonding: do not test arp/ns target with mode balance-alb/tlb fjes: fix memleaks in fjes_hw_setup i40e: update xdp_rxq_info::frag_size for ZC enabled Rx queue i40e: set xdp_rxq_info::frag_size xdp: reflect tail increase for MEM_TYPE_XSK_BUFF_POOL ice: update xdp_rxq_info::frag_size for ZC enabled Rx queue intel: xsk: initialize skb_frag_t::bv_offset in ZC drivers ice: remove redundant xdp_rxq_info registration i40e: handle multi-buffer packets that are shrunk by xdp prog ice: work on pre-XDP prog frag count xsk: fix usage of multi-buffer BPF helpers for ZC XDP xsk: make xsk_buff_pool responsible for clearing xdp_buff::flags xsk: recycle buffer in case Rx queue was full net: fill in MODULE_DESCRIPTION()s for rvu_mbox net: fill in MODULE_DESCRIPTION()s for litex net: fill in MODULE_DESCRIPTION()s for fsl_pq_mdio net: fill in MODULE_DESCRIPTION()s for fec ...
2024-01-23riscv, bpf: Fix unpredictable kernel crash about RV64 struct_opsPu Lehui
We encountered a kernel crash triggered by the bpf_tcp_ca testcase as show below: Unable to handle kernel paging request at virtual address ff60000088554500 Oops [#1] ... CPU: 3 PID: 458 Comm: test_progs Tainted: G OE 6.8.0-rc1-kselftest_plain #1 Hardware name: riscv-virtio,qemu (DT) epc : 0xff60000088554500 ra : tcp_ack+0x288/0x1232 epc : ff60000088554500 ra : ffffffff80cc7166 sp : ff2000000117ba50 gp : ffffffff82587b60 tp : ff60000087be0040 t0 : ff60000088554500 t1 : ffffffff801ed24e t2 : 0000000000000000 s0 : ff2000000117bbc0 s1 : 0000000000000500 a0 : ff20000000691000 a1 : 0000000000000018 a2 : 0000000000000001 a3 : ff60000087be03a0 a4 : 0000000000000000 a5 : 0000000000000000 a6 : 0000000000000021 a7 : ffffffff8263f880 s2 : 000000004ac3c13b s3 : 000000004ac3c13a s4 : 0000000000008200 s5 : 0000000000000001 s6 : 0000000000000104 s7 : ff2000000117bb00 s8 : ff600000885544c0 s9 : 0000000000000000 s10: ff60000086ff0b80 s11: 000055557983a9c0 t3 : 0000000000000000 t4 : 000000000000ffc4 t5 : ffffffff8154f170 t6 : 0000000000000030 status: 0000000200000120 badaddr: ff60000088554500 cause: 000000000000000c Code: c796 67d7 0000 0000 0052 0002 c13b 4ac3 0000 0000 (0001) 0000 ---[ end trace 0000000000000000 ]--- The reason is that commit 2cd3e3772e41 ("x86/cfi,bpf: Fix bpf_struct_ops CFI") changes the func_addr of arch_prepare_bpf_trampoline in struct_ops from NULL to non-NULL, while we use func_addr on RV64 to differentiate between struct_ops and regular trampoline. When the struct_ops testcase is triggered, it emits wrong prologue and epilogue, and lead to unpredictable issues. After commit 2cd3e3772e41, we can use BPF_TRAMP_F_INDIRECT to distinguish them as it always be set in struct_ops. Fixes: 2cd3e3772e41 ("x86/cfi,bpf: Fix bpf_struct_ops CFI") Signed-off-by: Pu Lehui <pulehui@huawei.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Björn Töpel <bjorn@rivosinc.com> Acked-by: Björn Töpel <bjorn@kernel.org> Link: https://lore.kernel.org/bpf/20240123023207.1917284-1-pulehui@huaweicloud.com
2024-01-21Merge tag 'powerpc-6.8-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Aneesh Kumar: - Increase default stack size to 32KB for Book3S Thanks to Michael Ellerman. * tag 'powerpc-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/64s: Increase default stack size to 32KB
2024-01-20Merge tag 'riscv-for-linus-6.8-mw4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull more RISC-V updates from Palmer Dabbelt: - Support for tuning for systems with fast misaligned accesses. - Support for SBI-based suspend. - Support for the new SBI debug console extension. - The T-Head CMOs now use PA-based flushes. - Support for enabling the V extension in kernel code. - Optimized IP checksum routines. - Various ftrace improvements. - Support for archrandom, which depends on the Zkr extension. - The build is no longer broken under NET=n, KUNIT=y for ports that don't define their own ipv6 checksum. * tag 'riscv-for-linus-6.8-mw4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (56 commits) lib: checksum: Fix build with CONFIG_NET=n riscv: lib: Check if output in asm goto supported riscv: Fix build error on rv32 + XIP riscv: optimize ELF relocation function in riscv RISC-V: Implement archrandom when Zkr is available riscv: Optimize hweight API with Zbb extension riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efi samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support riscv: ftrace: Make function graph use ftrace directly riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name riscv: Restrict DWARF5 when building with LLVM to known working versions riscv: Hoist linker relaxation disabling logic into Kconfig kunit: Add tests for csum_ipv6_magic and ip_fast_csum riscv: Add checksum library riscv: Add checksum header riscv: Add static key for misaligned accesses asm-generic: Improve csum_fold RISC-V: selftests: cbo: Ensure asm operands match constraints ...
2024-01-20Merge tag 'sh-for-v6.8-tag1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux Pull sh updates from John Paul Adrian Glaubitz: "Since the large patch series to convert arch/sh to device tree support has not been finalized yet due to various maintainers still asking for changes to the series, this ended up being rather small consisting of just two fixes. The first patch by Geert Uytterhoeven addresses a build failure in the EcoVec platform code. And the second patch by Masahiro Yamada removes an unnecessary $(foreach ...) found in a Makefile of the vsyscall code. - Rename missed backlight field from fbdev to dev - Remove unnecessary $(foreach ...)" * tag 'sh-for-v6.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux: sh: vsyscall: Remove unnecessary $(foreach ...) sh: ecovec24: Rename missed backlight field from fbdev to dev
2024-01-19Merge tag 'arm64-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Will Deacon: "I think the main one is fixing the dynamic SCS patching when full LTO is enabled (clang was silently getting this horribly wrong), but it's all good stuff. Rob just pointed out that the fix to the workaround for erratum #2966298 might not be necessary, but in the worst case it's harmless and since the official description leaves a little to be desired here, I've left it in. Summary: - Fix shadow call stack patching with LTO=full - Fix voluntary preemption of the FPSIMD registers from assembly code - Fix workaround for A520 CPU erratum #2966298 and extend to A510 - Fix SME issues that resulted in corruption of the register state - Minor fixes (missing includes, formatting)" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Fix silcon-errata.rst formatting arm64/sme: Always exit sme_alloc() early with existing storage arm64/fpsimd: Remove spurious check for SVE support arm64/ptrace: Don't flush ZA/ZT storage when writing ZA via ptrace arm64: entry: simplify kernel_exit logic arm64: entry: fix ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD arm64: errata: Add Cortex-A510 speculative unprivileged load workaround arm64: Rename ARM64_WORKAROUND_2966298 arm64: fpsimd: Bring cond_yield asm macro in line with new rules arm64: scs: Work around full LTO issue with dynamic SCS arm64: irq: include <linux/cpumask.h>
2024-01-19Merge tag 'loongarch-6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson Pull LoongArch updates from Huacai Chen: - Raise minimum clang version to 18.0.0 - Enable initial Rust support for LoongArch - Add built-in dtb support for LoongArch - Use generic interface to support crashkernel=X,[high,low] - Some bug fixes and other small changes - Update the default config file. * tag 'loongarch-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (22 commits) MAINTAINERS: Add BPF JIT for LOONGARCH entry LoongArch: Update Loongson-3 default config file LoongArch: BPF: Prevent out-of-bounds memory access LoongArch: BPF: Support 64-bit pointers to kfuncs LoongArch: Fix definition of ftrace_regs_set_instruction_pointer() LoongArch: Use generic interface to support crashkernel=X,[high,low] LoongArch: Fix and simplify fcsr initialization on execve() LoongArch: Let cores_io_master cover the largest NR_CPUS LoongArch: Change SHMLBA from SZ_64K to PAGE_SIZE LoongArch: Add a missing call to efi_esrt_init() LoongArch: Parsing CPU-related information from DTS LoongArch: dts: DeviceTree for Loongson-2K2000 LoongArch: dts: DeviceTree for Loongson-2K1000 LoongArch: dts: DeviceTree for Loongson-2K0500 LoongArch: Allow device trees be built into the kernel dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for interrupt-names dt-bindings: interrupt-controller: loongson,liointc: Fix dtbs_check warning for reg-names dt-bindings: loongarch: Add Loongson SoC boards compatibles dt-bindings: loongarch: Add CPU bindings for LoongArch LoongArch: Enable initial Rust support ...
2024-01-19Merge tag 'devicetree-for-6.8-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree header detangling from Rob Herring: "Remove the circular including of of_device.h and of_platform.h along with all of their implicit includes. This is the culmination of several kernel cycles worth of fixing implicit DT includes throughout the tree" * tag 'devicetree-for-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: of: Stop circularly including of_device.h and of_platform.h clk: qcom: gcc-x1e80100: Replace of_device.h with explicit includes thermal: loongson2: Replace of_device.h with explicit includes net: can: Use device_get_match_data() sparc: Use device_get_match_data()
2024-01-19Merge tag 'vfs-6.8.netfs' of ↵Linus Torvalds
gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs Pull netfs updates from Christian Brauner: "This extends the netfs helper library that network filesystems can use to replace their own implementations. Both afs and 9p are ported. cifs is ready as well but the patches are way bigger and will be routed separately once this is merged. That will remove lots of code as well. The overal goal is to get high-level I/O and knowledge of the page cache and ouf of the filesystem drivers. This includes knowledge about the existence of pages and folios The pull request converts afs and 9p. This removes about 800 lines of code from afs and 300 from 9p. For 9p it is now possible to do writes in larger than a page chunks. Additionally, multipage folio support can be turned on for 9p. Separate patches exist for cifs removing another 2000+ lines. I've included detailed information in the individual pulls I took. Summary: - Add NFS-style (and Ceph-style) locking around DIO vs buffered I/O calls to prevent these from happening at the same time. - Support for direct and unbuffered I/O. - Support for write-through caching in the page cache. - O_*SYNC and RWF_*SYNC writes use write-through rather than writing to the page cache and then flushing afterwards. - Support for write-streaming. - Support for write grouping. - Skip reads for which the server could only return zeros or EOF. - The fscache module is now part of the netfs library and the corresponding maintainer entry is updated. - Some helpers from the fscache subsystem are renamed to mark them as belonging to the netfs library. - Follow-up fixes for the netfs library. - Follow-up fixes for the 9p conversion" * tag 'vfs-6.8.netfs' of gitolite.kernel.org:pub/scm/linux/kernel/git/vfs/vfs: (50 commits) netfs: Fix wrong #ifdef hiding wait cachefiles: Fix signed/unsigned mixup netfs: Fix the loop that unmarks folios after writing to the cache netfs: Fix interaction between write-streaming and cachefiles culling netfs: Count DIO writes netfs: Mark netfs_unbuffered_write_iter_locked() static netfs: Fix proc/fs/fscache symlink to point to "netfs" not "../netfs" netfs: Rearrange netfs_io_subrequest to put request pointer first 9p: Use length of data written to the server in preference to error 9p: Do a couple of cleanups 9p: Fix initialisation of netfs_inode for 9p cachefiles: Fix __cachefiles_prepare_write() 9p: Use netfslib read/write_iter afs: Use the netfs write helpers netfs: Export the netfs_sreq tracepoint netfs: Optimise away reads above the point at which there can be no data netfs: Implement a write-through caching option netfs: Provide a launder_folio implementation netfs: Provide a writepages implementation netfs, cachefiles: Pass upper bound length to allow expansion ...
2024-01-19sparc: Use device_get_match_data()Rob Herring
Use preferred device_get_match_data() instead of of_match_device() to get the driver match data. With this, adjust the includes to explicitly include the correct headers. Signed-off-by: Rob Herring <robh@kernel.org>
2024-01-19sh: vsyscall: Remove unnecessary $(foreach ...)Masahiro Yamada
There is no need to use $(foreach ...) for iterating over just one parameter. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/20231120235423.4103310-1-masahiroy@kernel.org Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2024-01-19sh: ecovec24: Rename missed backlight field from fbdev to devGeert Uytterhoeven
One instance of gpio_backlight_platform_data.fbdev was renamed, but the second instance was forgotten, causing a build failure: arch/sh/boards/mach-ecovec24/setup.c: In function ‘arch_setup’: arch/sh/boards/mach-ecovec24/setup.c:1223:37: error: ‘struct gpio_backlight_platform_data’ has no member named ‘fbdev’; did you mean ‘dev’? 1223 | gpio_backlight_data.fbdev = NULL; | ^~~~~ | dev Fix this by updating the second instance. Fixes: ed369def91c1579a ("backlight/gpio_backlight: Rename field 'fbdev' to 'dev'") Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202309231601.Uu6qcRnU-lkp@intel.com/ Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Link: https://lore.kernel.org/r/20230925111022.3626362-1-geert+renesas@glider.be Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2024-01-18Merge tag 'kbuild-v6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Make Kconfig parse the input .config more precisely - Support W=c and W=e options for Kconfig - Set Kconfig int/hex symbols to zero if the 'default' property is missing - Add .editorconfig - Add scripts/git.orderFile - Add a script to detect backward-incompatible changes in UAPI headers - Resolve the symlink passed to O= option properly - Use the user-supplied mtime for all files in the builtin initramfs, which provides better reproducible builds - Fix the direct execution of debian/rules for Debian package builds - Use build ID instead of the .gnu_debuglink section for the Debian dbg package * tag 'kbuild-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (53 commits) kbuild: deb-pkg: use debian/<package> for tmpdir kbuild: deb-pkg: move 'make headers' to build-arch kbuild: deb-pkg: do not search for 'scripts' directory under arch/ kbuild: deb-pkg: use build ID instead of debug link for dbg package kbuild: deb-pkg: use more debhelper commands in builddeb kbuild: deb-pkg: remove unneeded '-f $srctree/Makefile' in debian/rules kbuild: deb-pkg: allow to run debian/rules from output directory kbuild: deb-pkg: set DEB_* variables if debian/rules is directly executed kbuild: deb-pkg: squash scripts/package/deb-build-option to debian/rules kbuild: deb-pkg: factor out common Make options in debian/rules kbuild: deb-pkg: hard-code Build-Depends kbuild: deb-pkg: split debian/copyright from the mkdebian script gen_init_cpio: Apply mtime supplied by user to all file types kbuild: resolve symlinks for O= properly docs: dev-tools: Add UAPI checker documentation check-uapi: Introduce check-uapi.sh scripts: Introduce a default git.orderFile kconfig: WERROR unmet symbol dependency Add .editorconfig file for basic formatting kconfig: Use KCONFIG_CONFIG instead of .config ...
2024-01-18Merge tag 'rtc-6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "There are three new drivers this cycle. Also the cmos driver is getting fixes for longstanding wakeup issues on AMD. New drivers: - Analog Devices MAX31335 - Nuvoton ma35d1 - Texas Instrument TPS6594 PMIC RTC Drivers: - cmos: use ACPI alarm instead of HPET on recent AMD platforms - nuvoton: add NCT3015Y-R and NCT3018Y-R support - rv8803: proper suspend/resume and wakeup-source support" * tag 'rtc-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (26 commits) rtc: nuvoton: Compatible with NCT3015Y-R and NCT3018Y-R rtc: da9063: Use dev_err_probe() rtc: da9063: Use device_get_match_data() rtc: da9063: Make IRQ as optional rtc: max31335: Fix comparison in max31335_volatile_reg() rtc: max31335: use regmap_update_bits_check rtc: max31335: remove unecessary locking rtc: max31335: add driver support dt-bindings: rtc: max31335: add max31335 bindings rtc: rv8803: add wakeup-source support rtc: ac100: remove misuses of kernel-doc rtc: class: Remove usage of the deprecated ida_simple_xx() API rtc: MAINTAINERS: drop Alessandro Zummo rtc: ma35d1: remove hardcoded UIE support dt-bindings: rtc: qcom-pm8xxx: fix inconsistent example rtc: rv8803: Add power management support rtc: ds3232: avoid unused-const-variable warning rtc: lpc24xx: add missing dependency rtc: tps6594: Add driver for TPS6594 RTC rtc: Add driver for Nuvoton ma35d1 rtc controller ...
2024-01-18Merge tag 'iommu-updates-v6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu Pull iommu updates from Joerg Roedel: "Core changes: - Fix race conditions in device probe path - Retire IOMMU bus_ops - Support for passing custom allocators to page table drivers - Clean up Kconfig around IOMMU_SVA - Support for sharing SVA domains with all devices bound to a mm - Firmware data parsing cleanup - Tracing improvements for iommu-dma code - Some smaller fixes and cleanups ARM-SMMU drivers: - Device-tree binding updates: - Add additional compatible strings for Qualcomm SoCs - Document Adreno clocks for Qualcomm's SM8350 SoC - SMMUv2: - Implement support for the ->domain_alloc_paging() callback - Ensure Secure context is restored following suspend of Qualcomm SMMU implementation - SMMUv3: - Disable stalling mode for the "quiet" context descriptor - Minor refactoring and driver cleanups Intel VT-d driver: - Cleanup and refactoring AMD IOMMU driver: - Improve IO TLB invalidation logic - Small cleanups and improvements Rockchip IOMMU driver: - DT binding update to add Rockchip RK3588 Apple DART driver: - Apple M1 USB4/Thunderbolt DART support - Cleanups Virtio IOMMU driver: - Add support for iotlb_sync_map - Enable deferred IO TLB flushes" * tag 'iommu-updates-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (66 commits) iommu: Don't reserve 0-length IOVA region iommu/vt-d: Move inline helpers to header files iommu/vt-d: Remove unused vcmd interfaces iommu/vt-d: Remove unused parameter of intel_pasid_setup_pass_through() iommu/vt-d: Refactor device_to_iommu() to retrieve iommu directly iommu/sva: Fix memory leak in iommu_sva_bind_device() dt-bindings: iommu: rockchip: Add Rockchip RK3588 iommu/dma: Trace bounce buffer usage when mapping buffers iommu/arm-smmu: Convert to domain_alloc_paging() iommu/arm-smmu: Pass arm_smmu_domain to internal functions iommu/arm-smmu: Implement IOMMU_DOMAIN_BLOCKED iommu/arm-smmu: Convert to a global static identity domain iommu/arm-smmu: Reorganize arm_smmu_domain_add_master() iommu/arm-smmu-v3: Remove ARM_SMMU_DOMAIN_NESTED iommu/arm-smmu-v3: Master cannot be NULL in arm_smmu_write_strtab_ent() iommu/arm-smmu-v3: Add a type for the STE iommu/arm-smmu-v3: disable stall for quiet_cd iommu/qcom: restore IOMMU state if needed iommu/arm-smmu-qcom: Add QCM2290 MDSS compatible iommu/arm-smmu-qcom: Add missing GMU entry to match table ...
2024-01-18Merge tag 'percpu-for-6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu Pull percpu updates from Dennis Zhou: "Enable percpu page allocator for RISC-V. There are RISC-V configurations with sparse NUMA configurations and small vmalloc space causing dynamic percpu allocations to fail as the backing chunk stride is too far apart" * tag 'percpu-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu: riscv: Enable pcpu page first chunk allocator mm: Introduce flush_cache_vmap_early()
2024-01-18riscv: lib: Check if output in asm goto supportedCharlie Jenkins
The output field of an asm goto statement is not supported by all compilers. If it is not supported, fallback to the non-optimized code. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Fixes: a04c192eabfb ("riscv: Add checksum library") Link: https://lore.kernel.org/r/20240118-csum_remove_output_operands_asm_goto-v2-1-5d1b73cf93d4@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-18Merge tag 's390-6.8-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull more s390 updates from Alexander Gordeev: - do not enable by default the support of 31-bit Enterprise Systems Architecture (ESA) ELF binaries - drop automatic CONFIG_KEXEC selection, while set CONFIG_KEXEC=y explicitly for defconfig and debug_defconfig only - fix zpci_get_max_io_size() to allow PCI block stores where normal PCI stores were used otherwise - remove unneeded tsk variable in do_exception() fault handler - __load_fpu_regs() is only called from the core kernel code. Therefore, remove not needed EXPORT_SYMBOL. - remove leftover comment from s390_fpregs_set() callback - few cleanups to Processor Activity Instrumentation (PAI) code (which perf framework is based on) - replace Wenjia Zhang with Thorsten Winkler as s390 Inter-User Communication Vehicle (IUCV) networking maintainer - Fix all scenarios where queues previously removed from a guest's Adjunct-Processor (AP) configuration do not re-appear in a reset state when they are subsequently made available to a guest again * tag 's390-6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: s390/vfio-ap: do not reset queue removed from host config s390/vfio-ap: reset queues associated with adapter for queue unbound from driver s390/vfio-ap: reset queues filtered from the guest's AP config s390/vfio-ap: let on_scan_complete() callback filter matrix and update guest's APCB s390/vfio-ap: loop over the shadow APCB when filtering guest's AP configuration s390/vfio-ap: always filter entire AP matrix s390/net: add Thorsten Winkler as maintainer s390/pai_ext: split function paiext_push_sample s390/pai_ext: rework function paiext_copy argments s390/pai: rework paiXXX_start and paiXXX_stop functions s390/pai_crypto: split function paicrypt_push_sample s390/pai: rework paixxxx_getctr interface s390/ptrace: remove leftover comment s390/fpu: remove __load_fpu_regs() export s390/mm,fault: remove not needed tsk variable s390/pci: fix max size calculation in zpci_memcpy_toio() s390/kexec: do not automatically select KEXEC option s390/compat: change default for CONFIG_COMPAT to "n"
2024-01-18riscv: Fix build error on rv32 + XIPAlexandre Ghiti
commit 66f1e6809397 ("riscv: Make XIP bootable again") restricted page offset to the sv39 page offset instead of the default sv57, which makes sense since probably the platforms that target XIP kernels do not support anything else than sv39 and we do not try to find out the largest address space supported on XIP kernels (ie set_satp_mode()). But PAGE_OFFSET_L3 is not defined for rv32, so fix the build error by restoring the previous behaviour which picks CONFIG_PAGE_OFFSET for rv32. Fixes: 66f1e6809397 ("riscv: Make XIP bootable again") Reported-by: Randy Dunlap <rdunlap@infradead.org> Closes: https://lore.kernel.org/linux-riscv/344dca85-5c48-44e1-bc64-4fa7973edd12@infradead.org/T/#u Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Link: https://lore.kernel.org/r/20240118212120.2087803-1-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-18Merge tag 'x86_tdx_for_6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 TDX updates from Dave Hansen: "This contains the initial support for host-side TDX support so that KVM can run TDX-protected guests. This does not include the actual KVM-side support which will come from the KVM folks. The TDX host interactions with kexec also needs to be ironed out before this is ready for prime time, so this code is currently Kconfig'd off when kexec is on. The majority of the code here is the kernel telling the TDX module which memory to protect and handing some additional memory over to it to use to store TDX module metadata. That sounds pretty simple, but the TDX architecture is rather flexible and it takes quite a bit of back-and-forth to say, "just protect all memory, please." There is also some code tacked on near the end of the series to handle a hardware erratum. The erratum can make software bugs such as a kernel write to TDX-protected memory cause a machine check and masquerade as a real hardware failure. The erratum handling watches out for these and tries to provide nicer user errors" * tag 'x86_tdx_for_6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86/virt/tdx: Make TDX host depend on X86_MCE x86/virt/tdx: Disable TDX host support when kexec is enabled Documentation/x86: Add documentation for TDX host support x86/mce: Differentiate real hardware #MCs from TDX erratum ones x86/cpu: Detect TDX partial write machine check erratum x86/virt/tdx: Handle TDX interaction with sleep and hibernation x86/virt/tdx: Initialize all TDMRs x86/virt/tdx: Configure global KeyID on all packages x86/virt/tdx: Configure TDX module with the TDMRs and global KeyID x86/virt/tdx: Designate reserved areas for all TDMRs x86/virt/tdx: Allocate and set up PAMTs for TDMRs x86/virt/tdx: Fill out TDMRs to cover all TDX memory regions x86/virt/tdx: Add placeholder to construct TDMRs to cover all TDX memory regions x86/virt/tdx: Get module global metadata for module initialization x86/virt/tdx: Use all system memory when initializing TDX module as TDX memory x86/virt/tdx: Add skeleton to enable TDX on demand x86/virt/tdx: Add SEAMCALL error printing for module initialization x86/virt/tdx: Handle SEAMCALL no entropy error in common code x86/virt/tdx: Make INTEL_TDX_HOST depend on X86_X2APIC x86/virt/tdx: Define TDX supported page sizes as macros ...
2024-01-18Merge tag 'usb-6.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB / Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt changes for 6.8-rc1. Included in here are the following: - Thunderbolt subsystem and driver updates for USB 4 hardware and issues reported by real devices - xhci driver updates - dwc3 driver updates - uvc_video gadget driver updates - typec driver updates - gadget string functions cleaned up - other small changes All of these have been in the linux-next tree for a while with no reported issues" * tag 'usb-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (169 commits) usb: typec: tipd: fix use of device-specific init function usb: typec: tipd: Separate reset for TPS6598x usb: mon: Fix atomicity violation in mon_bin_vma_fault usb: gadget: uvc: Remove nested locking usb: gadget: uvc: Fix use are free during STREAMOFF usb: typec: class: fix typec_altmode_put_partner to put plugs dt-bindings: usb: dwc3: Limit num-hc-interrupters definition dt-bindings: usb: xhci: Add num-hc-interrupters definition xhci: add support to allocate several interrupters USB: core: Use device_driver directly in struct usb_driver and usb_device_driver arm64: dts: mediatek: mt8195: Add 'rx-fifo-depth' for cherry usb: xhci-mtk: fix a short packet issue of gen1 isoc-in transfer dt-bindings: usb: mtk-xhci: add a property for Gen1 isoc-in transfer issue arm64: dts: qcom: msm8996: Remove PNoC clock from MSS arm64: dts: qcom: msm8996: Remove AGGRE2 clock from SLPI arm64: dts: qcom: msm8998: Remove AGGRE2 clock from SLPI arm64: dts: qcom: msm8939: Drop RPM bus clocks arm64: dts: qcom: sdm630: Drop RPM bus clocks arm64: dts: qcom: qcs404: Drop RPM bus clocks arm64: dts: qcom: msm8996: Drop RPM bus clocks ...
2024-01-18Merge tag 'tty-6.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty / serial updates from Greg KH: "Here is the big set of tty and serial driver changes for 6.8-rc1. As usual, Jiri has a bunch of refactoring and cleanups for the tty core and drivers in here, along with the usual set of rs485 updates (someday this might work properly...) Along with those, in here are changes for: - sc16is7xx serial driver updates - platform driver removal api updates - amba-pl011 driver updates - tty driver binding updates - other small tty/serial driver updates and changes All of these have been in linux-next for a while with no reported issues" * tag 'tty-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (197 commits) serial: sc16is7xx: refactor EFR lock serial: sc16is7xx: reorder code to remove prototype declarations serial: sc16is7xx: refactor FIFO access functions to increase commonality serial: sc16is7xx: drop unneeded MODULE_ALIAS serial: sc16is7xx: replace hardcoded divisor value with BIT() macro serial: sc16is7xx: add explicit return for some switch default cases serial: sc16is7xx: add macro for max number of UART ports serial: sc16is7xx: add driver name to struct uart_driver serial: sc16is7xx: use i2c_get_match_data() serial: sc16is7xx: use spi_get_device_match_data() serial: sc16is7xx: use DECLARE_BITMAP for sc16is7xx_lines bitfield serial: sc16is7xx: improve do/while loop in sc16is7xx_irq() serial: sc16is7xx: remove obsolete loop in sc16is7xx_port_irq() serial: sc16is7xx: set safe default SPI clock frequency serial: sc16is7xx: add check for unsupported SPI modes during probe serial: sc16is7xx: fix invalid sc16is7xx_lines bitfield in case of probe error serial: 8250_exar: Set missing rs485_supported flag serial: omap: do not override settings for RS485 support serial: core, imx: do not set RS485 enabled if it is not supported serial: core: make sure RS485 cannot be enabled when it is not supported ...
2024-01-19powerpc/64s: Increase default stack size to 32KBMichael Ellerman
There are reports of kernels crashing due to stack overflow while running OpenShift (Kubernetes). The primary contributor to the stack usage seems to be openvswitch, which is used by OVN-Kubernetes (based on OVN (Open Virtual Network)), but NFS also contributes in some stack traces. There may be some opportunities to reduce stack usage in the openvswitch code, but doing so potentially require tradeoffs vs performance, and also requires testing across architectures. Looking at stack usage across the kernel (using -fstack-usage), shows that ppc64le stack frames are on average 50-100% larger than the equivalent function built for x86-64. Which is not surprising given the minimum stack frame size is 32 bytes on ppc64le vs 16 bytes on x86-64. So increase the default stack size to 32KB for the modern 64-bit Book3S platforms, ie. pseries (virtualised) and powernv (bare metal). That leaves the older systems like G5s, and the AmigaOne (pasemi) with a 16KB stack which should be sufficient on those machines. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Aneesh Kumar K.V (IBM) <aneesh.kumar@kernel.org> Link: https://msgid.link/20231215124449.317597-1-mpe@ellerman.id.au
2024-01-18Merge tag 'driver-core-6.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here are the set of driver core and kernfs changes for 6.8-rc1. Nothing major in here this release cycle, just lots of small cleanups and some tweaks on kernfs that in the very end, got reverted and will come back in a safer way next release cycle. Included in here are: - more driver core 'const' cleanups and fixes - fw_devlink=rpm is now the default behavior - kernfs tiny changes to remove some string functions - cpu handling in the driver core is updated to work better on many systems that add topologies and cpus after booting - other minor changes and cleanups All of the cpu handling patches have been acked by the respective maintainers and are coming in here in one series. Everything has been in linux-next for a while with no reported issues" * tag 'driver-core-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (51 commits) Revert "kernfs: convert kernfs_idr_lock to an irq safe raw spinlock" kernfs: convert kernfs_idr_lock to an irq safe raw spinlock class: fix use-after-free in class_register() PM: clk: make pm_clk_add_notifier() take a const pointer EDAC: constantify the struct bus_type usage kernfs: fix reference to renamed function driver core: device.h: fix Excess kernel-doc description warning driver core: class: fix Excess kernel-doc description warning driver core: mark remaining local bus_type variables as const driver core: container: make container_subsys const driver core: bus: constantify subsys_register() calls driver core: bus: make bus_sort_breadthfirst() take a const pointer kernfs: d_obtain_alias(NULL) will do the right thing... driver core: Better advertise dev_err_probe() kernfs: Convert kernfs_path_from_node_locked() from strlcpy() to strscpy() kernfs: Convert kernfs_name_locked() from strlcpy() to strscpy() kernfs: Convert kernfs_walk_ns() from strlcpy() to strscpy() initramfs: Expose retained initrd as sysfs file fs/kernfs/dir: obey S_ISGID kernel/cgroup: use kernfs_create_dir_ns() ...
2024-01-18arm64/sme: Always exit sme_alloc() early with existing storageMark Brown
When sme_alloc() is called with existing storage and we are not flushing we will always allocate new storage, both leaking the existing storage and corrupting the state. Fix this by separating the checks for flushing and for existing storage as we do for SVE. Callers that reallocate (eg, due to changing the vector length) should call sme_free() themselves. Fixes: 5d0a8d2fba50 ("arm64/ptrace: Ensure that SME is set up for target when writing SSVE state") Signed-off-by: Mark Brown <broonie@kernel.org> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20240115-arm64-sme-flush-v1-1-7472bd3459b7@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
2024-01-18arm64/fpsimd: Remove spurious check for SVE supportMark Brown
There is no need to check for SVE support when changing vector lengths, even if the system is SME only we still need SVE storage for the streaming SVE state. Fixes: d4d5be94a878 ("arm64/fpsimd: Ensure SME storage is allocated after SVE VL changes") Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20240115-arm64-sve-enabled-check-v1-1-a26360b00f6d@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
2024-01-18arm64/ptrace: Don't flush ZA/ZT storage when writing ZA via ptraceMark Brown
When writing ZA we currently unconditionally flush the buffer used to store it as part of ensuring that it is allocated. Since this buffer is shared with ZT0 this means that a write to ZA when PSTATE.ZA is already set will corrupt the value of ZT0 on a SME2 system. Fix this by only flushing the backing storage if PSTATE.ZA was not previously set. This will mean that short or failed writes may leave stale data in the buffer, this seems as correct as our current behaviour and unlikely to be something that userspace will rely on. Fixes: f90b529bcbe5 ("arm64/sme: Implement ZT0 ptrace support") Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20240115-arm64-fix-ptrace-za-zt-v1-1-48617517028a@kernel.org Signed-off-by: Will Deacon <will@kernel.org>
2024-01-18arm64: entry: simplify kernel_exit logicMark Rutland
For historical reasons, the non-KPTI exception return path is duplicated for EL1 and EL0, with the structure: .if \el == 0 [ KPTI handling ] ldr lr, [sp, #S_LR] add sp, sp, #PT_REGS_SIZE // restore sp [ EL0 exception return workaround ] eret .else ldr lr, [sp, #S_LR] add sp, sp, #PT_REGS_SIZE // restore sp [ EL1 exception return workaround ] eret .endif sb This would be simpler and clearer with the common portions factored out, e.g. .if \el == 0 [ KPTI handling ] .endif ldr lr, [sp, #S_LR] add sp, sp, #PT_REGS_SIZE // restore sp .if \el == 0 [ EL0 exception return workaround ] .else [ EL1 exception return workaround ] .endif eret sb This expands to the same code, but is simpler for a human to follow as it avoids duplicates the restore of LR+SP, and makes it clear that the ERET is associated with the SB. There should be no functional change as a result of this patch. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Rob Herring <robh@kernel.org> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20240116110221.420467-3-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2024-01-18arm64: entry: fix ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOADMark Rutland
Currently the ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD workaround isn't quite right, as it is supposed to be applied after the last explicit memory access, but is immediately followed by an LDR. The ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD workaround is used to handle Cortex-A520 erratum 2966298 and Cortex-A510 erratum 3117295, which are described in: * https://developer.arm.com/documentation/SDEN2444153/0600/?lang=en * https://developer.arm.com/documentation/SDEN1873361/1600/?lang=en In both cases the workaround is described as: | If pagetable isolation is disabled, the context switch logic in the | kernel can be updated to execute the following sequence on affected | cores before exiting to EL0, and after all explicit memory accesses: | | 1. A non-shareable TLBI to any context and/or address, including | unused contexts or addresses, such as a `TLBI VALE1 Xzr`. | | 2. A DSB NSH to guarantee completion of the TLBI. The important part being that the TLBI+DSB must be placed "after all explicit memory accesses". Unfortunately, as-implemented, the TLBI+DSB is immediately followed by an LDR, as we have: | alternative_if ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD | tlbi vale1, xzr | dsb nsh | alternative_else_nop_endif | alternative_if_not ARM64_UNMAP_KERNEL_AT_EL0 | ldr lr, [sp, #S_LR] | add sp, sp, #PT_REGS_SIZE // restore sp | eret | alternative_else_nop_endif | | [ ... KPTI exception return path ... ] This patch fixes this by reworking the logic to place the TLBI+DSB immediately before the ERET, after all explicit memory accesses. The ERET is currently in a separate alternative block, and alternatives cannot be nested. To account for this, the alternative block for ARM64_UNMAP_KERNEL_AT_EL0 is replaced with a single alternative branch to skip the KPTI logic, with the new shape of the logic being: | alternative_insn "b .L_skip_tramp_exit_\@", nop, ARM64_UNMAP_KERNEL_AT_EL0 | [ ... KPTI exception return path ... ] | .L_skip_tramp_exit_\@: | | ldr lr, [sp, #S_LR] | add sp, sp, #PT_REGS_SIZE // restore sp | | alternative_if ARM64_WORKAROUND_SPECULATIVE_UNPRIV_LOAD | tlbi vale1, xzr | dsb nsh | alternative_else_nop_endif | eret The new structure means that the workaround is only applied when KPTI is not in use; this is fine as noted in the documented implications of the erratum: | Pagetable isolation between EL0 and higher level ELs prevents the | issue from occurring. ... and as per the workaround description quoted above, the workaround is only necessary "If pagetable isolation is disabled". Fixes: 471470bc7052 ("arm64: errata: Add Cortex-A520 speculative unprivileged load workaround") Signed-off-by: Mark Rutland <mark.rutland@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Rob Herring <robh@kernel.org> Cc: Will Deacon <will@kernel.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20240116110221.420467-2-mark.rutland@arm.com Signed-off-by: Will Deacon <will@kernel.org>
2024-01-17riscv: optimize ELF relocation function in riscvMaxim Kochetkov
The patch can optimize the running times of insmod command by modify ELF relocation function. In the 5.10 and latest kernel, when install the riscv ELF drivers which contains multiple symbol table items to be relocated, kernel takes a lot of time to execute the relocation. For example, we install a 3+MB driver need 180+s. We focus on the riscv architecture handle R_RISCV_HI20 and R_RISCV_LO20 type items relocation function in the arch\riscv\kernel\module.c and find that there are two-loops in the function. If we modify the begin number in the second for-loops iteration, we could save significant time for installation. We install the same 3+MB driver could just need 2s. Signed-off-by: Amma Lee <lixiaoyun@binary-semi.com> Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20231214063906.13612-1-fido_max@inbox.ru Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17RISC-V: Implement archrandom when Zkr is availableSamuel Ortiz
The Zkr extension is ratified and provides 16 bits of entropy seed when reading the SEED CSR. We can implement arch_get_random_seed_longs() by doing multiple csrrw to that CSR and filling an unsigned long with valid entropy bits. Acked-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Samuel Ortiz <sameo@rivosinc.com> Signed-off-by: Clément Léger <cleger@rivosinc.com> Link: https://lore.kernel.org/r/20231130111704.1319081-1-cleger@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Optimize hweight API with Zbb extensionXiao Wang
The Hamming Weight of a number is the total number of bits set in it, so the cpop/cpopw instruction from Zbb extension can be used to accelerate hweight() API. Signed-off-by: Xiao Wang <xiao.w.wang@intel.com> Reviewed-by: Charlie Jenkins <charlie@rivosinc.com> Link: https://lore.kernel.org/r/20231112095244.4015351-1-xiao.w.wang@intel.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: add dependency among Image(.gz), loader(.bin), and vmlinuz.efiMasahiro Yamada
A common issue in Makefile is a race in parallel building. You need to be careful to prevent multiple threads from writing to the same file simultaneously. Commit 3939f3345050 ("ARM: 8418/1: add boot image dependencies to not generate invalid images") addressed such a bad scenario. A similar symptom occurs with the following command: $ make -j$(nproc) ARCH=riscv Image Image.gz loader loader.bin vmlinuz.efi [ snip ] SORTTAB vmlinux OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image GZIP arch/riscv/boot/Image.gz AS arch/riscv/boot/loader.o AS arch/riscv/boot/loader.o Kernel: arch/riscv/boot/Image is ready PAD arch/riscv/boot/vmlinux.bin GZIP arch/riscv/boot/vmlinuz Kernel: arch/riscv/boot/loader is ready OBJCOPY arch/riscv/boot/loader.bin Kernel: arch/riscv/boot/loader.bin is ready Kernel: arch/riscv/boot/Image.gz is ready OBJCOPY arch/riscv/boot/vmlinuz.o LD arch/riscv/boot/vmlinuz.efi.elf OBJCOPY arch/riscv/boot/vmlinuz.efi Kernel: arch/riscv/boot/vmlinuz.efi is ready The log "OBJCOPY arch/riscv/boot/Image" is displayed 5 times. (also "AS arch/riscv/boot/loader.o" twice.) It indicates that 5 threads simultaneously enter arch/riscv/boot/ and write to arch/riscv/boot/Image. It occasionally leads to a build failure: $ make -j$(nproc) ARCH=riscv Image Image.gz loader loader.bin vmlinuz.efi [ snip ] SORTTAB vmlinux OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image OBJCOPY arch/riscv/boot/Image PAD arch/riscv/boot/vmlinux.bin truncate: Invalid number: 'arch/riscv/boot/vmlinux.bin' make[2]: *** [drivers/firmware/efi/libstub/Makefile.zboot:13: arch/riscv/boot/vmlinux.bin] Error 1 make[2]: *** Deleting file 'arch/riscv/boot/vmlinux.bin' make[1]: *** [arch/riscv/Makefile:167: vmlinuz.efi] Error 2 make[1]: *** Waiting for unfinished jobs.... Kernel: arch/riscv/boot/Image is ready GZIP arch/riscv/boot/Image.gz AS arch/riscv/boot/loader.o AS arch/riscv/boot/loader.o Kernel: arch/riscv/boot/loader is ready OBJCOPY arch/riscv/boot/loader.bin Kernel: arch/riscv/boot/loader.bin is ready Kernel: arch/riscv/boot/Image.gz is ready make: *** [Makefile:234: __sub-make] Error 2 Image.gz, loader, vmlinuz.efi depend on Image. loader.bin depends on loader. Such dependencies are not specified in arch/riscv/Makefile. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Samuel Holland <samuel.holland@sifive.com> Tested-by: Samuel Holland <samuel.holland@sifive.com> Link: https://lore.kernel.org/r/20231119100024.2370992-1-masahiroy@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17Merge patch series "riscv: ftrace: Miscellaneous ftrace improvements"Palmer Dabbelt
Björn Töpel <bjorn@kernel.org> says: This series includes a three ftrace improvements for RISC-V: 1. Do not require to run recordmcount at build time (patch 1) 2. Simplification of the function graph functionality (patch 2) 3. Enable DYNAMIC_FTRACE_WITH_DIRECT_CALLS (patch 3 and 4) The series has been tested on Qemu/rv64 virt/Debian sid with the following test configs: CONFIG_FTRACE_SELFTEST=y CONFIG_FTRACE_STARTUP_TEST=y CONFIG_SAMPLE_FTRACE_DIRECT=m CONFIG_SAMPLE_FTRACE_DIRECT_MULTI=m CONFIG_SAMPLE_FTRACE_OPS=m All tests pass. * b4-shazam-merge: samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI] riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support riscv: ftrace: Make function graph use ftrace directly riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY Link: https://lore.kernel.org/r/20231130121531.1178502-1-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17samples: ftrace: Add RISC-V support for SAMPLE_FTRACE_DIRECT[_MULTI]Song Shuai
Add RISC-V variants of the ftrace-direct* samples. Tested-by: Evgenii Shatokhin <e.shatokhin@yadro.com> Signed-off-by: Song Shuai <suagrfillet@gmail.com> Tested-by: Guo Ren <guoren@kernel.org> Signed-off-by: Guo Ren <guoren@kernel.org> Acked-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20231130121531.1178502-5-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: ftrace: Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS supportSong Shuai
Select the DYNAMIC_FTRACE_WITH_DIRECT_CALLS to provide the register_ftrace_direct[_multi] interfaces allowing users to register the customed trampoline (direct_caller) as the mcount for one or more target functions. And modify_ftrace_direct[_multi] are also provided for modifying direct_caller. To make the direct_caller and the other ftrace hooks (e.g. function/fgraph tracer, k[ret]probes) co-exist, a temporary register is nominated to store the address of direct_caller in ftrace_regs_caller. After the setting of the address direct_caller by direct_ops->func and the RESTORE_REGS in ftrace_regs_caller, direct_caller will be jumped to by the `jr` inst. Add DYNAMIC_FTRACE_WITH_DIRECT_CALLS support for RISC-V. Signed-off-by: Song Shuai <suagrfillet@gmail.com> Tested-by: Guo Ren <guoren@kernel.org> Signed-off-by: Guo Ren <guoren@kernel.org> Acked-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20231130121531.1178502-4-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: ftrace: Make function graph use ftrace directlySong Shuai
Similar to commit 0c0593b45c9b ("x86/ftrace: Make function graph use ftrace directly") and commit c4a0ebf87ceb ("arm64/ftrace: Make function graph use ftrace directly"), RISC-V has no need for a special graph tracer hook. The graph_ops::func function can be used to install the return_hooker. This cleanup only changes the FTRACE_WITH_REGS implementation, leaving the mcount-based implementation is unaffected. Perform the simplification, and also cleanup the register save/restore macros. Signed-off-by: Song Shuai <suagrfillet@gmail.com> Tested-by: Guo Ren <guoren@kernel.org> Signed-off-by: Guo Ren <guoren@kernel.org> Acked-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20231130121531.1178502-3-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRYSong Shuai
In commit afc76b8b8011 ("riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT") RISC-V added support for -fpatchable-function-entry, which removes the need for recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY to tell the build system not to run recordmcount. Link: https://lore.kernel.org/linux-riscv/CAAYs2=j3Eak9vU6xbAw0zPuoh00rh8v5C2U3fePkokZFibWs2g@mail.gmail.com/T/#t Link: https://lore.kernel.org/linux-riscv/Y4jtfrJt+%2FQ5nMOz@spud/ Signed-off-by: Song Shuai <suagrfillet@gmail.com> Tested-by: Guo Ren <guoren@kernel.org> Signed-off-by: Guo Ren <guoren@kernel.org> Acked-by: Björn Töpel <bjorn@rivosinc.com> Link: https://lore.kernel.org/r/20231130121531.1178502-2-bjorn@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17Merge patch series "RISC-V: Disable DWARF5 with known broken LLVM versions"Palmer Dabbelt
Nathan Chancellor <nathan@kernel.org> says: This series disables DWARF5 for LLVM versions where it is known to be broken due to linker relaxation. * b4-shazam-merge: lib/Kconfig.debug: Update AS_HAS_NON_CONST_LEB128 comment and name riscv: Restrict DWARF5 when building with LLVM to known working versions riscv: Hoist linker relaxation disabling logic into Kconfig Link: https://github.com/llvm/llvm-project/commit/bbc0f99f3bc96f1db16f649fc21dd18e5b0918f6 Link: https://lore.kernel.org/r/20231205-riscv-restrict-dwarf5-llvm-v2-0-aedf00a382ac@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Restrict DWARF5 when building with LLVM to known working versionsNathan Chancellor
LLVM prior to 18.0.0 would generate incorrect debug info for DWARF5 due to linker relaxation, which was worked around in clang by defaulting RISC-V to DWARF4 [1]. Unfortunately, this workaround does not work for the kernel because the DWARF version can be independently changed from the default in Kconfig. Do not allow DWARF5 to be selected for RISC-V when using linker relaxation (ld.lld >= 15.0.0) and a version of LLVM that does not have the fixes (the integrated assembler [2] and ld.lld [3] < 18.0.0) necessary to generate the correct debug info. Link: https://github.com/llvm/llvm-project/commit/bbc0f99f3bc96f1db16f649fc21dd18e5b0918f6 [1] Link: https://github.com/llvm/llvm-project/commit/1df5ea29b43690b6622db2cad7b745607ca4de6a [2] Link: https://github.com/llvm/llvm-project/commit/7ffabb61a5569444b5ac9322e22e5471cc5e4a77 [3] Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Fangrui Song <maskray@google.com> Link: https://lore.kernel.org/r/20231205-riscv-restrict-dwarf5-llvm-v2-2-aedf00a382ac@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Hoist linker relaxation disabling logic into KconfigNathan Chancellor
Certain configurations may need to be disabled if linker relaxation is in use, such as DWARF5 with ld.lld < 18. Hoist the logic of whether or not linker relaxation is in use into Kconfig so decisions can be made at configuration time. Reviewed-by: Fangrui Song <maskray@google.com> Signed-off-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20231205-riscv-restrict-dwarf5-llvm-v2-1-aedf00a382ac@kernel.org Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17Merge patch series "riscv: Add fine-tuned checksum functions"Palmer Dabbelt
Charlie Jenkins <charlie@rivosinc.com> says: Each architecture generally implements fine-tuned checksum functions to leverage the instruction set. This patch adds the main checksum functions that are used in networking. Tested on QEMU, this series allows the CHECKSUM_KUNIT tests to complete an average of 50.9% faster. This patch takes heavy use of the Zbb extension using alternatives patching. To test this patch, enable the configs for KUNIT, then CHECKSUM_KUNIT. I have attempted to make these functions as optimal as possible, but I have not ran anything on actual riscv hardware. My performance testing has been limited to inspecting the assembly, running the algorithms on x86 hardware, and running in QEMU. ip_fast_csum is a relatively small function so even though it is possible to read 64 bits at a time on compatible hardware, the bottleneck becomes the clean up and setup code so loading 32 bits at a time is actually faster. * b4-shazam-merge: kunit: Add tests for csum_ipv6_magic and ip_fast_csum riscv: Add checksum library riscv: Add checksum header riscv: Add static key for misaligned accesses asm-generic: Improve csum_fold Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-0-1c50de5f2167@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Add checksum libraryCharlie Jenkins
Provide a 32 and 64 bit version of do_csum. When compiled for 32-bit will load from the buffer in groups of 32 bits, and when compiled for 64-bit will load in groups of 64 bits. Additionally provide riscv optimized implementation of csum_ipv6_magic. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Xiao Wang <xiao.w.wang@intel.com> Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-4-1c50de5f2167@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Add checksum headerCharlie Jenkins
Provide checksum algorithms that have been designed to leverage riscv instructions such as rotate. In 64-bit, can take advantage of the larger register to avoid some overflow checking. Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Acked-by: Conor Dooley <conor.dooley@microchip.com> Reviewed-by: Xiao Wang <xiao.w.wang@intel.com> Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-3-1c50de5f2167@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17riscv: Add static key for misaligned accessesCharlie Jenkins
Support static branches depending on the value of misaligned accesses. This will be used by a later patch in the series. At any point in time, this static branch will only be enabled if all online CPUs are considered "fast". Signed-off-by: Charlie Jenkins <charlie@rivosinc.com> Reviewed-by: Evan Green <evan@rivosinc.com> Link: https://lore.kernel.org/r/20240108-optimize_checksum-v15-2-1c50de5f2167@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2024-01-17Merge tag 'char-misc-6.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc and other driver updates from Greg KH: "Here is the big set of char/misc and other driver subsystem changes for 6.8-rc1. Other than lots of binder driver changes (as you can see by the merge conflicts) included in here are: - lots of iio driver updates and additions - spmi driver updates - eeprom driver updates - firmware driver updates - ocxl driver updates - mhi driver updates - w1 driver updates - nvmem driver updates - coresight driver updates - platform driver remove callback api changes - tags.sh script updates - bus_type constant marking cleanups - lots of other small driver updates All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (341 commits) android: removed duplicate linux/errno uio: Fix use-after-free in uio_open drivers: soc: xilinx: add check for platform firmware: xilinx: Export function to use in other module scripts/tags.sh: remove find_sources scripts/tags.sh: use -n to test archinclude scripts/tags.sh: add local annotation scripts/tags.sh: use more portable -path instead of -wholename scripts/tags.sh: Update comment (addition of gtags) firmware: zynqmp: Convert to platform remove callback returning void firmware: turris-mox-rwtm: Convert to platform remove callback returning void firmware: stratix10-svc: Convert to platform remove callback returning void firmware: stratix10-rsu: Convert to platform remove callback returning void firmware: raspberrypi: Convert to platform remove callback returning void firmware: qemu_fw_cfg: Convert to platform remove callback returning void firmware: mtk-adsp-ipc: Convert to platform remove callback returning void firmware: imx-dsp: Convert to platform remove callback returning void firmware: coreboot_table: Convert to platform remove callback returning void firmware: arm_scpi: Convert to platform remove callback returning void firmware: arm_scmi: Convert to platform remove callback returning void ...
2024-01-17Merge tag 'pci-v6.8-changes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci Pull pci updates from Bjorn Helgaas: "Enumeration: - Reserve ECAM so we don't assign it to PCI BARs; this works around bugs where BIOS included ECAM in a PNP0A03 host bridge window, didn't reserve it via a PNP0C02 motherboard device, and didn't allocate space for SR-IOV VF BARs (Bjorn Helgaas) - Add MMCONFIG/ECAM debug logging (Bjorn Helgaas) - Rename 'MMCONFIG' to 'ECAM' to match spec usage (Bjorn Helgaas) - Log device type (Root Port, Switch Port, etc) during enumeration (Bjorn Helgaas) - Log bridges before downstream devices so the dmesg order is more logical (Bjorn Helgaas) - Log resource names (BAR 0, VF BAR 0, bridge window, etc) consistently instead of a mix of names and "reg 0x10" (Puranjay Mohan, Bjorn Helgaas) - Fix 64GT/s effective data rate calculation to use 1b/1b encoding rather than the 8b/10b or 128b/130b used by lower rates (Ilpo Järvinen) - Use PCI_HEADER_TYPE_* instead of literals in x86, powerpc, SCSI lpfc (Ilpo Järvinen) - Clean up open-coded PCIBIOS return code mangling (Ilpo Järvinen) Resource management: - Restructure pci_dev_for_each_resource() to avoid computing the address of an out-of-bounds array element (the bounds check was performed later so the element was never actually *read*, but it's nicer to avoid even computing an out-of-bounds address) (Andy Shevchenko) Driver binding: - Convert pci-host-common.c platform .remove() callback to .remove_new() returning 'void' since it's not useful to return error codes here (Uwe Kleine-König) - Convert exynos, keystone, kirin from .remove() to .remove_new(), which returns void instead of int (Uwe Kleine-König) - Drop unused struct pci_driver.node member (Mathias Krause) Virtualization: - Add ACS quirk for more Zhaoxin Root Ports (LeoLiuoc) Error handling: - Log AER errors as "Correctable" (not "Corrected") or "Uncorrectable" to match spec terminology (Bjorn Helgaas) - Decode Requester ID when no error info found instead of printing the raw hex value (Bjorn Helgaas) Endpoint framework: - Use a unique test pattern for each BAR in the pci_endpoint_test to make it easier to debug address translation issues (Niklas Cassel) Broadcom STB PCIe controller driver: - Add DT property "brcm,clkreq-mode" and driver support for different CLKREQ# modes to make ASPM L1.x states possible (Jim Quinlan) Freescale Layerscape PCIe controller driver: - Add suspend/resume support for Layerscape LS1043a and LS1021a, including software-managed PME_Turn_Off and transitions between L0, L2/L3_Ready Link states (Frank Li) MediaTek PCIe controller driver: - Clear MSI interrupt status before handler to avoid missing MSIs that occur after the handler (qizhong cheng) MediaTek PCIe Gen3 controller driver: - Update mediatek-gen3 translation window setup to handle MMIO space that is not a power of two in size (Jianjun Wang) Qualcomm PCIe controller driver: - Increase qcom iommu-map maxItems to accommodate SDX55 (five entries) and SDM845 (sixteen entries) (Krzysztof Kozlowski) - Describe qcom,pcie-sc8180x clocks and resets accurately (Krzysztof Kozlowski) - Describe qcom,pcie-sm8150 clocks and resets accurately (Krzysztof Kozlowski) - Correct the qcom "reset-name" property, previously incorrectly called "reset-names" (Krzysztof Kozlowski) - Document qcom,pcie-sm8650, based on qcom,pcie-sm8550 (Neil Armstrong) Renesas R-Car PCIe controller driver: - Replace of_device.h with explicit of.h include to untangle header usage (Rob Herring) - Add DT and driver support for optional miniPCIe 1.5v and 3.3v regulators on KingFisher (Wolfram Sang) SiFive FU740 PCIe controller driver: - Convert fu740 CONFIG_PCIE_FU740 dependency from SOC_SIFIVE to ARCH_SIFIVE (Conor Dooley) Synopsys DesignWare PCIe controller driver: - Align iATU mapping for endpoint MSI-X (Niklas Cassel) - Drop "host_" prefix from struct dw_pcie_host_ops members (Yoshihiro Shimoda) - Drop "ep_" prefix from struct dw_pcie_ep_ops members (Yoshihiro Shimoda) - Rename struct dw_pcie_ep_ops.func_conf_select() to .get_dbi_offset() to be more descriptive (Yoshihiro Shimoda) - Add Endpoint DBI accessors to encapsulate offset lookups (Yoshihiro Shimoda) TI J721E PCIe driver: - Add j721e DT and driver support for 'num-lanes' for devices that support x1, x2, or x4 Links (Matt Ranostay) - Add j721e DT compatible strings and driver support for j784s4 (Matt Ranostay) - Make TI J721E Kconfig depend on ARCH_K3 since the hardware is specific to those TI SoC parts (Peter Robinson) TI Keystone PCIe controller driver: - Hold power management references to all PHYs while enabling them to avoid a race when one provides clocks to others (Siddharth Vadapalli) Xilinx XDMA PCIe controller driver: - Remove redundant dev_err(), since platform_get_irq() and platform_get_irq_byname() already log errors (Yang Li) - Fix uninitialized symbols in xilinx_pl_dma_pcie_setup_irq() (Krzysztof Wilczyński) - Fix xilinx_pl_dma_pcie_init_irq_domain() error return when irq_domain_add_linear() fails (Harshit Mogalapalli) MicroSemi Switchtec management driver: - Do dma_mrpc cleanup during switchtec_pci_remove() to match its devm ioremapping in switchtec_pci_probe(). Previously the cleanup was done in stdev_release(), which used stale pointers if stdev->cdev happened to be open when the PCI device was removed (Daniel Stodden) Miscellaneous: - Convert interrupt terminology from "legacy" to "INTx" to be more specific and match spec terminology (Damien Le Moal) - In dw-xdata-pcie, pci_endpoint_test, and vmd, replace usage of deprecated ida_simple_*() API with ida_alloc() and ida_free() (Christophe JAILLET)" * tag 'pci-v6.8-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci: (97 commits) PCI: Fix kernel-doc issues PCI: brcmstb: Configure HW CLKREQ# mode appropriate for downstream device dt-bindings: PCI: brcmstb: Add property "brcm,clkreq-mode" PCI: mediatek-gen3: Fix translation window size calculation PCI: mediatek: Clear interrupt status before dispatching handler PCI: keystone: Fix race condition when initializing PHYs PCI: xilinx-xdma: Fix error code in xilinx_pl_dma_pcie_init_irq_domain() PCI: xilinx-xdma: Fix uninitialized symbols in xilinx_pl_dma_pcie_setup_irq() PCI: rcar-gen4: Fix -Wvoid-pointer-to-enum-cast error PCI: iproc: Fix -Wvoid-pointer-to-enum-cast warning PCI: dwc: Add dw_pcie_ep_{read,write}_dbi[2] helpers PCI: dwc: Rename .func_conf_select to .get_dbi_offset in struct dw_pcie_ep_ops PCI: dwc: Rename .ep_init to .init in struct dw_pcie_ep_ops PCI: dwc: Drop host prefix from struct dw_pcie_host_ops members misc: pci_endpoint_test: Use a unique test pattern for each BAR PCI: j721e: Make TI J721E depend on ARCH_K3 PCI: j721e: Add TI J784S4 PCIe configuration PCI/AER: Use explicit register sizes for struct members PCI/AER: Decode Requester ID when no error info found PCI/AER: Use 'Correctable' and 'Uncorrectable' spec terms for errors ...
2024-01-17Merge tag 'rproc-v6.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux Pull remoteproc updates from Bjorn Andersson: - The i.MX DSP remoteproc driver adds support for providing a resource table, in order to enable IPC with the core - The TI K3 DSP driver is transitioned to remove_new, error messages are changed to use symbolic error codes, and dev_err_probe() is used where applicable - Support for the Qualcomm SC7280 audio, compute and WiFi co-processors are added to the Qualcomm TrustZone based remoteproc driver * tag 'rproc-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/remoteproc/linux: remoteproc: qcom_q6v5_pas: Add SC7280 ADSP, CDSP & WPSS dt-bindings: remoteproc: qcom: sc7180-pas: Add SC7280 compatibles dt-bindings: remoteproc: qcom: sc7180-pas: Fix SC7280 MPSS PD-names remoteproc: k3-dsp: Convert to platform remove callback returning void remoteproc: k3-dsp: Use symbolic error codes in error messages remoteproc: k3-dsp: Suppress duplicate error message in .remove() arm64: dts: imx8mp: Add reserve-memory nodes for DSP remoteproc: imx_dsp_rproc: Add mandatory find_loaded_rsc_table op
2024-01-17Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds
Pull kvm updates from Paolo Bonzini: "Generic: - Use memdup_array_user() to harden against overflow. - Unconditionally advertise KVM_CAP_DEVICE_CTRL for all architectures. - Clean up Kconfigs that all KVM architectures were selecting - New functionality around "guest_memfd", a new userspace API that creates an anonymous file and returns a file descriptor that refers to it. guest_memfd files are bound to their owning virtual machine, cannot be mapped, read, or written by userspace, and cannot be resized. guest_memfd files do however support PUNCH_HOLE, which can be used to switch a memory area between guest_memfd and regular anonymous memory. - New ioctl KVM_SET_MEMORY_ATTRIBUTES allowing userspace to specify per-page attributes for a given page of guest memory; right now the only attribute is whether the guest expects to access memory via guest_memfd or not, which in Confidential SVMs backed by SEV-SNP, TDX or ARM64 pKVM is checked by firmware or hypervisor that guarantees confidentiality (AMD PSP, Intel TDX module, or EL2 in the case of pKVM). x86: - Support for "software-protected VMs" that can use the new guest_memfd and page attributes infrastructure. This is mostly useful for testing, since there is no pKVM-like infrastructure to provide a meaningfully reduced TCB. - Fix a relatively benign off-by-one error when splitting huge pages during CLEAR_DIRTY_LOG. - Fix a bug where KVM could incorrectly test-and-clear dirty bits in non-leaf TDP MMU SPTEs if a racing thread replaces a huge SPTE with a non-huge SPTE. - Use more generic lockdep assertions in paths that don't actually care about whether the caller is a reader or a writer. - let Xen guests opt out of having PV clock reported as "based on a stable TSC", because some of them don't expect the "TSC stable" bit (added to the pvclock ABI by KVM, but never set by Xen) to be set. - Revert a bogus, made-up nested SVM consistency check for TLB_CONTROL. - Advertise flush-by-ASID support for nSVM unconditionally, as KVM always flushes on nested transitions, i.e. always satisfies flush requests. This allows running bleeding edge versions of VMware Workstation on top of KVM. - Sanity check that the CPU supports flush-by-ASID when enabling SEV support. - On AMD machines with vNMI, always rely on hardware instead of intercepting IRET in some cases to detect unmasking of NMIs - Support for virtualizing Linear Address Masking (LAM) - Fix a variety of vPMU bugs where KVM fail to stop/reset counters and other state prior to refreshing the vPMU model. - Fix a double-overflow PMU bug by tracking emulated counter events using a dedicated field instead of snapshotting the "previous" counter. If the hardware PMC count triggers overflow that is recognized in the same VM-Exit that KVM manually bumps an event count, KVM would pend PMIs for both the hardware-triggered overflow and for KVM-triggered overflow. - Turn off KVM_WERROR by default for all configs so that it's not inadvertantly enabled by non-KVM developers, which can be problematic for subsystems that require no regressions for W=1 builds. - Advertise all of the host-supported CPUID bits that enumerate IA32_SPEC_CTRL "features". - Don't force a masterclock update when a vCPU synchronizes to the current TSC generation, as updating the masterclock can cause kvmclock's time to "jump" unexpectedly, e.g. when userspace hotplugs a pre-created vCPU. - Use RIP-relative address to read kvm_rebooting in the VM-Enter fault paths, partly as a super minor optimization, but mostly to make KVM play nice with position independent executable builds. - Guard KVM-on-HyperV's range-based TLB flush hooks with an #ifdef on CONFIG_HYPERV as a minor optimization, and to self-document the code. - Add CONFIG_KVM_HYPERV to allow disabling KVM support for HyperV "emulation" at build time. ARM64: - LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB base granule sizes. Branch shared with the arm64 tree. - Large Fine-Grained Trap rework, bringing some sanity to the feature, although there is more to come. This comes with a prefix branch shared with the arm64 tree. - Some additional Nested Virtualization groundwork, mostly introducing the NV2 VNCR support and retargetting the NV support to that version of the architecture. - A small set of vgic fixes and associated cleanups. Loongarch: - Optimization for memslot hugepage checking - Cleanup and fix some HW/SW timer issues - Add LSX/LASX (128bit/256bit SIMD) support RISC-V: - KVM_GET_REG_LIST improvement for vector registers - Generate ISA extension reg_list using macros in get-reg-list selftest - Support for reporting steal time along with selftest s390: - Bugfixes Selftests: - Fix an annoying goof where the NX hugepage test prints out garbage instead of the magic token needed to run the test. - Fix build errors when a header is delete/moved due to a missing flag in the Makefile. - Detect if KVM bugged/killed a selftest's VM and print out a helpful message instead of complaining that a random ioctl() failed. - Annotate the guest printf/assert helpers with __printf(), and fix the various bugs that were lurking due to lack of said annotation" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (185 commits) x86/kvm: Do not try to disable kvmclock if it was not enabled KVM: x86: add missing "depends on KVM" KVM: fix direction of dependency on MMU notifiers KVM: introduce CONFIG_KVM_COMMON KVM: arm64: Add missing memory barriers when switching to pKVM's hyp pgd KVM: arm64: vgic-its: Avoid potential UAF in LPI translation cache RISC-V: KVM: selftests: Add get-reg-list test for STA registers RISC-V: KVM: selftests: Add steal_time test support RISC-V: KVM: selftests: Add guest_sbi_probe_extension RISC-V: KVM: selftests: Move sbi_ecall to processor.c RISC-V: KVM: Implement SBI STA extension RISC-V: KVM: Add support for SBI STA registers RISC-V: KVM: Add support for SBI extension registers RISC-V: KVM: Add SBI STA info to vcpu_arch RISC-V: KVM: Add steal-update vcpu request RISC-V: KVM: Add SBI STA extension skeleton RISC-V: paravirt: Implement steal-time support RISC-V: Add SBI STA extension definitions RISC-V: paravirt: Add skeleton for pv-time support RISC-V: KVM: Fix indentation in kvm_riscv_vcpu_set_reg_csr() ...
2024-01-17Merge tag 'parisc-for-6.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull parisc updates from Helge Deller: "Two small fixes for the parisc architecture: - Fix PDC address calculation with narrow firmware (64-bit kernel on 32-bit firmware) - Fix kthread which checks power button get started on qemu too" * tag 'parisc-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc/power: Fix power soft-off button emulation on qemu parisc/firmware: Fix F-extend for PDC addresses