pm24.git/arch/sh/include, branch rust-6.8

kprobes: unify kprobes_exceptions_nofify() prototypes

2023-11-10T10:59:05Z

Most architectures that support kprobes declare this function in their own asm/kprobes.h header and provide an override, but some are missing the prototype, which causes a warning for the __weak stub implementation: kernel/kprobes.c:1865:12: error: no previous prototype for 'kprobe_exceptions_notify' [-Werror=missing-prototypes] 1865 | int __weak kprobe_exceptions_notify(struct notifier_block *self, Move the prototype into linux/kprobes.h so it is visible to all the definitions. Link: https://lore.kernel.org/all/20231108125843.3806765-4-arnd@kernel.org/ Acked-by: Masami Hiramatsu (Google) Signed-off-by: Arnd Bergmann Signed-off-by: Masami Hiramatsu (Google)

locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()

2023-11-02T09:13:12Z

Use __generic_cmpxchg_local() for arch_cmpxchg_local() implementation on SH architecture because it does not implement arch_cmpxchg_local(). Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@intel.com/ Signed-off-by: Masami Hiramatsu (Google) Reviewed-by: Geert Uytterhoeven Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/169824660459.24340.14614817132696360531.stgit@devnote2 Signed-off-by: John Paul Adrian Glaubitz

sh: machvec: Remove custom ioport_{un,}map()

2023-10-25T14:50:30Z

These functions were only used on the microdev board that is now gone, so remove them to simplify the ioport handling. This could be further simplified to use the generic I/O port accessors now. Signed-off-by: Arnd Bergmann Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230914155523.3839811-4-arnd@kernel.org Signed-off-by: John Paul Adrian Glaubitz

sh: Remove stale microdev board

2023-10-25T14:48:06Z

This board was an early prototype platform for early SH4 CPUs and related to the already removed SH5 cayman platform. The microdev board itself has been kept in the tree for this long despite being in a bad shape even 20 years ago when it got merged, with no working PCI support and ugly workarounds for its I/O port implementation that try to emulate PC style peripheral access despite being quite different in reality. As far as I can tell, the ethernet, display, USB and PCI devices on it already broke at some point (afbb9d8d5266b, 46bc85872040a), so I think we can just removeit entirely. Link: https://lore.kernel.org/lkml/09094baf-dadf-4bce-9f63-f2a1f255f9a8@app.fastmail.com/ Signed-off-by: Arnd Bergmann Reviewed-by: John Paul Adrian Glaubitz Link: https://lore.kernel.org/r/20230914155523.3839811-1-arnd@kernel.org Signed-off-by: John Paul Adrian Glaubitz

Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-08-31T19:20:12Z

Pull x86 shadow stack support from Dave Hansen: "This is the long awaited x86 shadow stack support, part of Intel's Control-flow Enforcement Technology (CET). CET consists of two related security features: shadow stacks and indirect branch tracking. This series implements just the shadow stack part of this feature, and just for userspace. The main use case for shadow stack is providing protection against return oriented programming attacks. It works by maintaining a secondary (shadow) stack using a special memory type that has protections against modification. When executing a CALL instruction, the processor pushes the return address to both the normal stack and to the special permission shadow stack. Upon RET, the processor pops the shadow stack copy and compares it to the normal stack copy. For more information, refer to the links below for the earlier versions of this patch set" Link: https://lore.kernel.org/lkml/20220130211838.8382-1-rick.p.edgecombe@intel.com/ Link: https://lore.kernel.org/lkml/20230613001108.3040476-1-rick.p.edgecombe@intel.com/ * tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits) x86/shstk: Change order of __user in type x86/ibt: Convert IBT selftest to asm x86/shstk: Don't retry vm_munmap() on -EINTR x86/kbuild: Fix Documentation/ reference x86/shstk: Move arch detail comment out of core mm x86/shstk: Add ARCH_SHSTK_STATUS x86/shstk: Add ARCH_SHSTK_UNLOCK x86: Add PTRACE interface for shadow stack selftests/x86: Add shadow stack test x86/cpufeatures: Enable CET CR4 bit for shadow stack x86/shstk: Wire in shadow stack interface x86: Expose thread features in /proc/$PID/status x86/shstk: Support WRSS for userspace x86/shstk: Introduce map_shadow_stack syscall x86/shstk: Check that signal frame is shadow stack mem x86/shstk: Check that SSP is aligned on sigreturn x86/shstk: Handle signals for shadow stack x86/shstk: Introduce routines modifying shstk x86/shstk: Handle thread shadow stack x86/shstk: Add user-mode shadow stack support ...

mm: rationalise flush_icache_pages() and flush_icache_page()

2023-08-24T23:20:25Z

Move the default (no-op) implementation of flush_icache_pages() to from . Remove the flush_icache_page() wrapper from each architecture into . Link: https://lkml.kernel.org/r/20230802151406.3735276-32-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Signed-off-by: Andrew Morton

sh: implement the new page table range API

2023-08-24T23:20:23Z

Add PFN_PTE_SHIFT, update_mmu_cache_range(), flush_dcache_folio() and flush_icache_pages(). Change the PG_dcache_clean flag from being per-page to per-folio. Flush the entire folio containing the pages in flush_icache_pages() for ease of implementation. Link: https://lkml.kernel.org/r/20230802151406.3735276-25-willy@infradead.org Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Mike Rapoport (IBM) Cc: Yoshinori Sato Cc: Rich Felker Cc: John Paul Adrian Glaubitz Signed-off-by: Andrew Morton

sh: convert pte_free_tlb() to use ptdescs

2023-08-21T20:37:57Z

Part of the conversions to replace pgtable constructor/destructors with ptdesc equivalents. Also cleans up some spacing issues. Link: https://lkml.kernel.org/r/20230807230513.102486-28-vishal.moola@gmail.com Signed-off-by: Vishal Moola (Oracle) Reviewed-by: Geert Uytterhoeven Acked-by: John Paul Adrian Glaubitz Acked-by: Mike Rapoport (IBM) Cc: Arnd Bergmann Cc: Catalin Marinas Cc: Christophe Leroy Cc: Claudio Imbrenda Cc: Dave Hansen Cc: David Hildenbrand Cc: "David S. Miller" Cc: Dinh Nguyen Cc: Geert Uytterhoeven Cc: Guo Ren Cc: Huacai Chen Cc: Hugh Dickins Cc: Jonas Bonn Cc: Matthew Wilcox Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Richard Weinberger Cc: Thomas Bogendoerfer Cc: Yoshinori Sato Signed-off-by: Andrew Morton

sh: mm: convert to GENERIC_IOREMAP

2023-08-18T17:12:34Z

By taking GENERIC_IOREMAP method, the generic generic_ioremap_prot(), generic_iounmap(), and their generic wrapper ioremap_prot(), ioremap() and iounmap() are all visible and available to arch. Arch needs to provide wrapper functions to override the generic versions if there's arch specific handling in its ioremap_prot(), ioremap() or iounmap(). This change will simplify implementation by removing duplicated code with generic_ioremap_prot() and generic_iounmap(), and has the equivalent functioality as before. Here, add wrapper functions ioremap_prot() and iounmap() for SuperH's special operation when ioremap() and iounmap(). Link: https://lkml.kernel.org/r/20230706154520.11257-13-bhe@redhat.com Signed-off-by: Baoquan He Cc: John Paul Adrian Glaubitz Cc: Yoshinori Sato Cc: Rich Felker Cc: Alexander Gordeev Cc: Arnd Bergmann Cc: Brian Cain Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Christoph Hellwig Cc: Chris Zankel Cc: David Laight Cc: Geert Uytterhoeven Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: Jonas Bonn Cc: Kefeng Wang Cc: Matthew Wilcox Cc: Max Filippov Cc: Michael Ellerman Cc: Mike Rapoport (IBM) Cc: Nathan Chancellor Cc: Nicholas Piggin Cc: Niklas Schnelle Cc: Stafford Horne Cc: Stefan Kristiansson Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Signed-off-by: Andrew Morton

sh: add including

2023-08-18T17:12:34Z

In , it provides a generic implementation of all I/O accessors. For some port|mm io functions, SuperH has its own implementation in arch/sh/kernel/iomap.c and arch/sh/include/asm/io_noioport.h. These will conflict with those in and cause compiling error. Hence add macro definitions to ensure that the SuperH version of them will override the generic version. [arnd@arndb.de: fix asm-generic/io.h inclusion] Link: https://lkml.kernel.org/r/20230802141658.2064864-1-arnd@kernel.org Link: https://lkml.kernel.org/r/20230706154520.11257-12-bhe@redhat.com Signed-off-by: Baoquan He Signed-off-by: Arnd Bergmann Cc: John Paul Adrian Glaubitz Cc: Yoshinori Sato Cc: Rich Felker Cc: Alexander Gordeev Cc: Arnd Bergmann Cc: Brian Cain Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Christophe Leroy Cc: Christoph Hellwig Cc: Chris Zankel Cc: David Laight Cc: Geert Uytterhoeven Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Helge Deller Cc: "James E.J. Bottomley" Cc: Jonas Bonn Cc: Kefeng Wang Cc: Matthew Wilcox Cc: Max Filippov Cc: Michael Ellerman Cc: Mike Rapoport (IBM) Cc: Nathan Chancellor Cc: Nicholas Piggin Cc: Niklas Schnelle Cc: Stafford Horne Cc: Stefan Kristiansson Cc: Sven Schnelle Cc: Vasily Gorbik Cc: Vineet Gupta Cc: Will Deacon Signed-off-by: Andrew Morton