pm24.git/arch/s390/Kconfig, branch master

Merge tag 's390-6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2024-11-29T18:40:52Z

Pull more s390 updates from Heiko Carstens: - Add swap entry for hugetlbfs support - Add PTE_MARKER support for hugetlbs mappings; this fixes a regression (possible page fault loop) which was introduced when support for UFFDIO_POISON for hugetlbfs was added - Add ARCH_HAS_PREEMPT_LAZY and PREEMPT_DYNAMIC support - Mark IRQ entries in entry code, so that stack tracers can filter out the non-IRQ parts of stack traces. This fixes stack depot capacity limit warnings, since without filtering the number of unique stack traces is huge - In PCI code fix leak of struct zpci_dev object, and fix potential double remove of hotplug slot - Fix pagefault_disable() / pagefault_enable() unbalance in arch_stack_user_walk_common() - A couple of inline assembly optimizations, more cmpxchg() to try_cmpxchg() conversions, and removal of usages of xchg() and cmpxchg() on one and two byte memory areas - Various other small improvements and cleanups * tag 's390-6.13-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (27 commits) Revert "s390/mm: Allow large pages for KASAN shadow mapping" s390/spinlock: Use flag output constraint for arch_cmpxchg_niai8() s390/spinlock: Use R constraint for arch_load_niai4() s390/spinlock: Generate shorter code for arch_spin_unlock() s390/spinlock: Remove condition code clobber from arch_spin_unlock() s390/spinlock: Use symbolic names in inline assemblies s390: Support PREEMPT_DYNAMIC s390/pci: Fix potential double remove of hotplug slot s390/pci: Fix leak of struct zpci_dev when zpci_add_device() fails s390/mm/hugetlbfs: Add missing includes s390/mm: Add PTE_MARKER support for hugetlbfs mappings s390/mm: Introduce region-third and segment table swap entries s390/mm: Introduce region-third and segment table entry present bits s390/mm: Rearrange region-third and segment table entry SW bits KVM: s390: Increase size of union sca_utility to four bytes KVM: s390: Remove one byte cmpxchg() usage KVM: s390: Use try_cmpxchg() instead of cmpxchg() loops s390/ap: Replace xchg() with WRITE_ONCE() s390/mm: Allow large pages for KASAN shadow mapping s390: Add ARCH_HAS_PREEMPT_LAZY support ...

s390: Support PREEMPT_DYNAMIC

2024-11-28T13:12:04Z

Select HAVE_PREEMPT_DYNAMIC_KEY and add the pieces which are required to support PREEMPT_DYNAMIC. See commit 99cf983cc8bc ("sched/preempt: Add PREEMPT_DYNAMIC using static keys") and commit 1b2d3451ee50 ("arm64: Support PREEMPT_DYNAMIC") for more details. Signed-off-by: Heiko Carstens

s390: Add ARCH_HAS_PREEMPT_LAZY support

2024-11-24T15:59:42Z

Just add the required TIF bit for ARCH_HAS_PREEMPT_LAZY support. Shuffle TIF bits to get TIF_NEED_RESCHED_LAZY next to TIF_NEED_RESCHED. Signed-off-by: Heiko Carstens

Merge tag 'timers-vdso-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2024-11-20T00:09:13Z

Pull vdso data page handling updates from Thomas Gleixner: "First steps of consolidating the VDSO data page handling. The VDSO data page handling is architecture specific for historical reasons, but there is no real technical reason to do so. Aside of that VDSO data has become a dump ground for various mechanisms and fail to provide a clear separation of the functionalities. Clean this up by: - consolidating the VDSO page data by getting rid of architecture specific warts especially in x86 and PowerPC. - removing the last includes of header files which are pulling in other headers outside of the VDSO namespace. - seperating timekeeping and other VDSO data accordingly. Further consolidation of the VDSO page handling is done in subsequent changes scheduled for the next merge window. This also lays the ground for expanding the VDSO time getters for independent PTP clocks in a generic way without making every architecture add support seperately" * tag 'timers-vdso-2024-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits) x86/vdso: Add missing brackets in switch case vdso: Rename struct arch_vdso_data to arch_vdso_time_data powerpc: Split systemcfg struct definitions out from vdso powerpc: Split systemcfg data out of vdso data page powerpc: Add kconfig option for the systemcfg page powerpc/pseries/lparcfg: Use num_possible_cpus() for potential processors powerpc/pseries/lparcfg: Fix printing of system_active_processors powerpc/procfs: Propagate error of remap_pfn_range() powerpc/vdso: Remove offset comment from 32bit vdso_arch_data x86/vdso: Split virtual clock pages into dedicated mapping x86/vdso: Delete vvar.h x86/vdso: Access vdso data without vvar.h x86/vdso: Move the rng offset to vsyscall.h x86/vdso: Access rng vdso data without vvar.h x86/vdso: Access timens vdso data without vvar.h x86/vdso: Allocate vvar page from C code x86/vdso: Access rng data from kernel without vvar x86/vdso: Place vdso_data at beginning of vvar page x86/vdso: Use __arch_get_vdso_data() to access vdso data x86/mm/mmap: Remove arch_vma_name() ...

Merge tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2024-11-19T01:45:41Z

Pull s390 updates from Heiko Carstens: - Add firmware sysfs interface which allows user space to retrieve the dump area size of the machine - Add 'measurement_chars_full' CHPID sysfs attribute to make the complete associated Channel-Measurements Characteristics Block available - Add virtio-mem support - Move gmap aka KVM page fault handling from the main fault handler to KVM code. This is the first step to make s390 KVM page fault handling similar to other architectures. With this first step the main fault handler does not have any special handling anymore, and therefore convert it to support LOCK_MM_AND_FIND_VMA - With gcc 14 s390 support for flag output operand support for inline assemblies was added. This allows for several optimizations: - Provide a cmpxchg inline assembly which makes use of this, and provide all variants of arch_try_cmpxchg() so that the compiler can generate slightly better code - Convert a few cmpxchg() loops to try_cmpxchg() loops - Similar to x86 add a CC_OUT() helper macro (and other macros), and convert all inline assemblies to make use of them, so that depending on compiler version better code can be generated - List installed host-key hashes in sysfs if the machine supports the Query Ultravisor Keys UVC - Add 'Retrieve Secret' ioctl which allows user space in protected execution guests to retrieve previously stored secrets from the Ultravisor - Add pkey-uv module which supports the conversion of Ultravisor retrievable secrets to protected keys - Extend the existing paes cipher to exploit the full AES-XTS hardware acceleration introduced with message-security assist extension 10 - Convert hopefully all sysfs show functions to use sysfs_emit() so that the constant flow of such patches stop - For PCI devices make use of the newly added Topology ID attribute to enable whole card multi-function support despite the change to PCHID per port. Additionally improve the overall robustness and usability of the multifunction support - Various other small improvements, fixes, and cleanups * tag 's390-6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (133 commits) s390/cio/ioasm: Convert to use flag output macros s390/cio/qdio: Convert to use flag output macros s390/sclp: Convert to use flag output macros s390/dasd: Convert to use flag output macros s390/boot/physmem: Convert to use flag output macros s390/pci: Convert to use flag output macros s390/kvm: Convert to use flag output macros s390/extmem: Convert to use flag output macros s390/string: Convert to use flag output macros s390/diag: Convert to use flag output macros s390/irq: Convert to use flag output macros s390/smp: Convert to use flag output macros s390/uv: Convert to use flag output macros s390/pai: Convert to use flag output macros s390/mm: Convert to use flag output macros s390/cpu_mf: Convert to use flag output macros s390/cpcmd: Convert to use flag output macros s390/topology: Convert to use flag output macros s390/time: Convert to use flag output macros s390/pageattr: Convert to use flag output macros ...

crash, powerpc: default to CRASH_DUMP=n on PPC_BOOK3S_32

2024-11-15T06:43:48Z

Fixes boot failures on 6.9 on PPC_BOOK3S_32 machines using Open Firmware. On these machines, the kernel refuses to boot from non-zero PHYSICAL_START, which occurs when CRASH_DUMP is on. Since most PPC_BOOK3S_32 machines boot via Open Firmware, it should default to off for them. Users booting via some other mechanism can still turn it on explicitly. Does not change the default on any other architectures for the time being. Link: https://lkml.kernel.org/r/20240917163720.1644584-1-dave@vasilevsky.ca Fixes: 75bc255a7444 ("crash: clean up kdump related config items") Signed-off-by: Dave Vasilevsky Reported-by: Reimar Döffinger Closes: https://lists.debian.org/debian-powerpc/2024/07/msg00001.html Acked-by: Michael Ellerman [powerpc] Acked-by: Baoquan He Cc: "Eric W. Biederman" Cc: John Paul Adrian Glaubitz Cc: Reimar Döffinger Cc: Signed-off-by: Andrew Morton

s390/asm: Helper macros for flag output operand handling

2024-11-13T13:31:31Z

Since gcc supports flag out operands for inline assemblies there is always the question when this feature should be used and if it is worth all the ifdefs that come with that. In order to avoid that provide similar macros like x86 which can be used for all inline assemblies which extract the condition code. Depending on compiler features the generated code will either always contain an ipm+srl instruction pair, which extracts the condition code, or alternatively let the compiler handle this completely. Suggested-by: Juergen Christ Reviewed-by: Juergen Christ Signed-off-by: Heiko Carstens

vdso: Rename struct arch_vdso_data to arch_vdso_time_data

2024-11-02T11:37:36Z

The struct arch_vdso_data is only about vdso time data. So rename it to arch_vdso_time_data to make it obvious. Non time-related data will be migrated out of these structs soon. Signed-off-by: Nam Cao Signed-off-by: Thomas Gleixner Acked-by: Heiko Carstens # s390 Link: https://lore.kernel.org/all/20241010-vdso-generic-base-v1-28-b64f0842d512@linutronix.de

s390/mm: Convert to LOCK_MM_AND_FIND_VMA

2024-10-29T10:49:19Z

With the gmap code gone s390 can be easily converted to LOCK_MM_AND_FIND_VMA like it has been done for most other architectures. Reviewed-by: Gerald Schaefer Reviewed-by: Alexander Gordeev Link: https://lore.kernel.org/r/20241022120601.167009-12-imbrenda@linux.ibm.com Signed-off-by: Heiko Carstens

Merge tag 's390-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2024-09-21T16:02:54Z

Pull s390 updates from Vasily Gorbik: - Optimize ftrace and kprobes code patching and avoid stop machine for kprobes if sequential instruction fetching facility is available - Add hiperdispatch feature to dynamically adjust CPU capacity in vertical polarization to improve scheduling efficiency and overall performance. Also add infrastructure for handling warning track interrupts (WTI), allowing for graceful CPU preemption - Rework crypto code pkey module and split it into separate, independent modules for sysfs, PCKMO, CCA, and EP11, allowing modules to load only when the relevant hardware is available - Add hardware acceleration for HMAC modes and the full AES-XTS cipher, utilizing message-security assist extensions (MSA) 10 and 11. It introduces new shash implementations for HMAC-SHA224/256/384/512 and registers the hardware-accelerated AES-XTS cipher as the preferred option. Also add clear key token support - Add MSA 10 and 11 processor activity instrumentation counters to perf and update PAI Extension 1 NNPA counters - Cleanup cpu sampling facility code and rework debug/WARN_ON_ONCE statements - Add support for SHA3 performance enhancements introduced with MSA 12 - Add support for the query authentication information feature of MSA 13 and introduce the KDSA CPACF instruction. Provide query and query authentication information in sysfs, enabling tools like cpacfinfo to present this data in a human-readable form - Update kernel disassembler instructions - Always enable EXPOLINE_EXTERN if supported by the compiler to ensure kpatch compatibility - Add missing warning handling and relocated lowcore support to the early program check handler - Optimize ftrace_return_address() and avoid calling unwinder - Make modules use kernel ftrace trampolines - Strip relocs from the final vmlinux ELF file to make it roughly 2 times smaller - Dump register contents and call trace for early crashes to the console - Generate ptdump address marker array dynamically - Fix rcu_sched stalls that might occur when adding or removing large amounts of pages at once to or from the CMM balloon - Fix deadlock caused by recursive lock of the AP bus scan mutex - Unify sync and async register save areas in entry code - Cleanup debug prints in crypto code - Various cleanup and sanitizing patches for the decompressor - Various small ftrace cleanups * tag 's390-6.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (84 commits) s390/crypto: Display Query and Query Authentication Information in sysfs s390/crypto: Add Support for Query Authentication Information s390/crypto: Rework RRE and RRF CPACF inline functions s390/crypto: Add KDSA CPACF Instruction s390/disassembler: Remove duplicate instruction format RSY_RDRU s390/boot: Move boot_printk() code to own file s390/boot: Use boot_printk() instead of sclp_early_printk() s390/boot: Rename decompressor_printk() to boot_printk() s390/boot: Compile all files with the same march flag s390: Use MARCH_HAS_*_FEATURES defines s390: Provide MARCH_HAS_*_FEATURES defines s390/facility: Disable compile time optimization for decompressor code s390/boot: Increase minimum architecture to z10 s390/als: Remove obsolete comment s390/sha3: Fix SHA3 selftests failures s390/pkey: Add AES xts and HMAC clear key token support s390/cpacf: Add MSA 10 and 11 new PCKMO functions s390/mm: Add cond_resched() to cmm_alloc/free_pages() s390/pai_ext: Update PAI extension 1 counters s390/pai_crypto: Add support for MSA 10 and 11 pai counters ...