- 26 9月, 2019 1 次提交
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由 Michel Lespinasse 提交于
Add RB_DECLARE_CALLBACKS_MAX, which generates augmented rbtree callbacks for the case where the augmented value is a scalar whose definition follows a max(f(node)) pattern. This actually covers all present uses of RB_DECLARE_CALLBACKS, and saves some (source) code duplication in the various RBCOMPUTE function definitions. [walken@google.com: fix mm/vmalloc.c] Link: http://lkml.kernel.org/r/CANN689FXgK13wDYNh1zKxdipeTuALG4eKvKpsdZqKFJ-rvtGiQ@mail.gmail.com [walken@google.com: re-add check to check_augmented()] Link: http://lkml.kernel.org/r/20190727022027.GA86863@google.com Link: http://lkml.kernel.org/r/20190703040156.56953-3-walken@google.comSigned-off-by: NMichel Lespinasse <walken@google.com> Acked-by: NPeter Zijlstra (Intel) <peterz@infradead.org> Cc: David Howells <dhowells@redhat.com> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Uladzislau Rezki <urezki@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 25 9月, 2019 23 次提交
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由 Alexandre Ghiti 提交于
In order to avoid wasting user address space by using bottom-up mmap allocation scheme, prefer top-down scheme when possible. Before: root@qemuriscv64:~# cat /proc/self/maps 00010000-00016000 r-xp 00000000 fe:00 6389 /bin/cat.coreutils 00016000-00017000 r--p 00005000 fe:00 6389 /bin/cat.coreutils 00017000-00018000 rw-p 00006000 fe:00 6389 /bin/cat.coreutils 00018000-00039000 rw-p 00000000 00:00 0 [heap] 1555556000-155556d000 r-xp 00000000 fe:00 7193 /lib/ld-2.28.so 155556d000-155556e000 r--p 00016000 fe:00 7193 /lib/ld-2.28.so 155556e000-155556f000 rw-p 00017000 fe:00 7193 /lib/ld-2.28.so 155556f000-1555570000 rw-p 00000000 00:00 0 1555570000-1555572000 r-xp 00000000 00:00 0 [vdso] 1555574000-1555576000 rw-p 00000000 00:00 0 1555576000-1555674000 r-xp 00000000 fe:00 7187 /lib/libc-2.28.so 1555674000-1555678000 r--p 000fd000 fe:00 7187 /lib/libc-2.28.so 1555678000-155567a000 rw-p 00101000 fe:00 7187 /lib/libc-2.28.so 155567a000-15556a0000 rw-p 00000000 00:00 0 3fffb90000-3fffbb1000 rw-p 00000000 00:00 0 [stack] After: root@qemuriscv64:~# cat /proc/self/maps 00010000-00016000 r-xp 00000000 fe:00 6389 /bin/cat.coreutils 00016000-00017000 r--p 00005000 fe:00 6389 /bin/cat.coreutils 00017000-00018000 rw-p 00006000 fe:00 6389 /bin/cat.coreutils 2de81000-2dea2000 rw-p 00000000 00:00 0 [heap] 3ff7eb6000-3ff7ed8000 rw-p 00000000 00:00 0 3ff7ed8000-3ff7fd6000 r-xp 00000000 fe:00 7187 /lib/libc-2.28.so 3ff7fd6000-3ff7fda000 r--p 000fd000 fe:00 7187 /lib/libc-2.28.so 3ff7fda000-3ff7fdc000 rw-p 00101000 fe:00 7187 /lib/libc-2.28.so 3ff7fdc000-3ff7fe2000 rw-p 00000000 00:00 0 3ff7fe4000-3ff7fe6000 r-xp 00000000 00:00 0 [vdso] 3ff7fe6000-3ff7ffd000 r-xp 00000000 fe:00 7193 /lib/ld-2.28.so 3ff7ffd000-3ff7ffe000 r--p 00016000 fe:00 7193 /lib/ld-2.28.so 3ff7ffe000-3ff7fff000 rw-p 00017000 fe:00 7193 /lib/ld-2.28.so 3ff7fff000-3ff8000000 rw-p 00000000 00:00 0 3fff888000-3fff8a9000 rw-p 00000000 00:00 0 [stack] [alex@ghiti.fr: v6] Link: http://lkml.kernel.org/r/20190808061756.19712-15-alex@ghiti.fr Link: http://lkml.kernel.org/r/20190730055113.23635-15-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Acked-by: Paul Walmsley <paul.walmsley@sifive.com> [arch/riscv] Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
mips uses a top-down layout by default that exactly fits the generic functions, so get rid of arch specific code and use the generic version by selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT. As ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT selects ARCH_HAS_ELF_RANDOMIZE, use the generic version of arch_randomize_brk since it also fits. Note that this commit also removes the possibility for mips to have elf randomization and no MMU: without MMU, the security added by randomization is worth nothing. Link: http://lkml.kernel.org/r/20190730055113.23635-14-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NPaul Burton <paul.burton@mips.com> Reviewed-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
Mips uses TASK_IS_32BIT_ADDR to determine if a task is 32bit, but this define is mips specific and other arches do not have it: instead, use !IS_ENABLED(CONFIG_64BIT) || is_compat_task() condition. Link: http://lkml.kernel.org/r/20190730055113.23635-13-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NPaul Burton <paul.burton@mips.com> Reviewed-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
This commit simply bumps up to 32MB and 1GB the random offset of brk, compared to 8MB and 256MB, for 32bit and 64bit respectively. Link: http://lkml.kernel.org/r/20190730055113.23635-12-alex@ghiti.frSuggested-by: NKees Cook <keescook@chromium.org> Signed-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NPaul Burton <paul.burton@mips.com> Reviewed-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
mmap base address must be computed wrt stack top address, using TASK_SIZE is wrong since STACK_TOP and TASK_SIZE are not equivalent. Link: http://lkml.kernel.org/r/20190730055113.23635-11-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NKees Cook <keescook@chromium.org> Acked-by: NPaul Burton <paul.burton@mips.com> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
This commit takes care of stack randomization and stack guard gap when computing mmap base address and checks if the task asked for randomization. This fixes the problem uncovered and not fixed for arm here: https://lkml.kernel.org/r/20170622200033.25714-1-riel@redhat.com Link: http://lkml.kernel.org/r/20190730055113.23635-10-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NKees Cook <keescook@chromium.org> Acked-by: NPaul Burton <paul.burton@mips.com> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
arm uses a top-down mmap layout by default that exactly fits the generic functions, so get rid of arch specific code and use the generic version by selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT. As ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT selects ARCH_HAS_ELF_RANDOMIZE, use the generic version of arch_randomize_brk since it also fits. Note that this commit also removes the possibility for arm to have elf randomization and no MMU: without MMU, the security added by randomization is worth nothing. Note that it is safe to remove STACK_RND_MASK since it matches the default value. Link: http://lkml.kernel.org/r/20190730055113.23635-9-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
mmap base address must be computed wrt stack top address, using TASK_SIZE is wrong since STACK_TOP and TASK_SIZE are not equivalent. Link: http://lkml.kernel.org/r/20190730055113.23635-8-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
This commit takes care of stack randomization and stack guard gap when computing mmap base address and checks if the task asked for randomization. This fixes the problem uncovered and not fixed for arm here: https://lkml.kernel.org/r/20170622200033.25714-1-riel@redhat.com Link: http://lkml.kernel.org/r/20190730055113.23635-7-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
This commits selects ARCH_HAS_ELF_RANDOMIZE when an arch uses the generic topdown mmap layout functions so that this security feature is on by default. Note that this commit also removes the possibility for arm64 to have elf randomization and no MMU: without MMU, the security added by randomization is worth nothing. Link: http://lkml.kernel.org/r/20190730055113.23635-6-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
arm64 handles top-down mmap layout in a way that can be easily reused by other architectures, so make it available in mm. It then introduces a new config ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT that can be set by other architectures to benefit from those functions. Note that this new config depends on MMU being enabled, if selected without MMU support, a warning will be thrown. Link: http://lkml.kernel.org/r/20190730055113.23635-5-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Suggested-by: NChristoph Hellwig <hch@infradead.org> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
Do not offset mmap base address because of stack randomization if current task does not want randomization. Note that x86 already implements this behaviour. Link: http://lkml.kernel.org/r/20190730055113.23635-4-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexandre Ghiti 提交于
Each architecture has its own way to determine if a task is a compat task, by using is_compat_task in arch_mmap_rnd, it allows more genericity and then it prepares its moving to mm/. Link: http://lkml.kernel.org/r/20190730055113.23635-3-alex@ghiti.frSigned-off-by: NAlexandre Ghiti <alex@ghiti.fr> Acked-by: NCatalin Marinas <catalin.marinas@arm.com> Acked-by: NKees Cook <keescook@chromium.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NLuis Chamberlain <mcgrof@kernel.org> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Christoph Hellwig <hch@infradead.org> Cc: James Hogan <jhogan@kernel.org> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Will Deacon <will.deacon@arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kefeng Wang 提交于
According to 78ddc534 ("thp: rename split_huge_page_pmd() to split_huge_pmd()"), update related comment. Link: http://lkml.kernel.org/r/20190731033406.185285-1-wangkefeng.wang@huawei.comSigned-off-by: NKefeng Wang <wangkefeng.wang@huawei.com> Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Rapoport 提交于
Both pgtable_cache_init() and pgd_cache_init() are used to initialize kmem cache for page table allocations on several architectures that do not use PAGE_SIZE tables for one or more levels of the page table hierarchy. Most architectures do not implement these functions and use __weak default NOP implementation of pgd_cache_init(). Since there is no such default for pgtable_cache_init(), its empty stub is duplicated among most architectures. Rename the definitions of pgd_cache_init() to pgtable_cache_init() and drop empty stubs of pgtable_cache_init(). Link: http://lkml.kernel.org/r/1566457046-22637-1-git-send-email-rppt@linux.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.ibm.com> Acked-by: Will Deacon <will@kernel.org> [arm64] Acked-by: Thomas Gleixner <tglx@linutronix.de> [x86] Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Rapoport 提交于
The microblaze implementation of pte_alloc_one() has a provision to allocated PTEs from high memory, but neither CONFIG_HIGHPTE nor pte_map*() versions for suitable for HIGHPTE are defined. Except that, microblaze version of pte_alloc_one() is identical to the generic one as well as the implementations of pte_free() and pte_free_kernel(). Switch microblaze to use the generic versions of these functions. Also remove pte_free_slow() that is not referenced anywhere in the code. Link: http://lkml.kernel.org/r/1565690952-32158-1-git-send-email-rppt@linux.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.ibm.com> Acked-by: NMark Rutland <mark.rutland@arm.com> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Rapoport 提交于
The sh implementation pte_alloc_one(), pte_alloc_one_kernel(), pte_free_kernel() and pte_free() is identical to the generic except of lack of __GFP_ACCOUNT for the user PTEs allocation. Switch sh to use generic version of these functions. Link: http://lkml.kernel.org/r/1565250728-21721-4-git-send-email-rppt@linux.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Rapoport 提交于
The ia64 implementation pte_alloc_one(), pte_alloc_one_kernel(), pte_free_kernel() and pte_free() is identical to the generic except of lack of __GFP_ACCOUNT for the user PTEs allocation. Switch ia64 to use generic version of these functions. Link: http://lkml.kernel.org/r/1565250728-21721-3-git-send-email-rppt@linux.ibm.comSigned-off-by: NMike Rapoport <rppt@linux.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Nicholas Piggin 提交于
Patch series "mm: remove quicklist page table caches". A while ago Nicholas proposed to remove quicklist page table caches [1]. I've rebased his patch on the curren upstream and switched ia64 and sh to use generic versions of PTE allocation. [1] https://lore.kernel.org/linux-mm/20190711030339.20892-1-npiggin@gmail.com This patch (of 3): Remove page table allocator "quicklists". These have been around for a long time, but have not got much traction in the last decade and are only used on ia64 and sh architectures. The numbers in the initial commit look interesting but probably don't apply anymore. If anybody wants to resurrect this it's in the git history, but it's unhelpful to have this code and divergent allocator behaviour for minor archs. Also it might be better to instead make more general improvements to page allocator if this is still so slow. Link: http://lkml.kernel.org/r/1565250728-21721-2-git-send-email-rppt@linux.ibm.comSigned-off-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NMike Rapoport <rppt@linux.ibm.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Replace 1 << compound_order(page) with compound_nr(page). Minor improvements in readability. Link: http://lkml.kernel.org/r/20190721104612.19120-4-willy@infradead.orgSigned-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Replace PAGE_SHIFT + compound_order(page) with the new page_shift() function. Minor improvements in readability. [akpm@linux-foundation.org: fix build in tce_page_is_contained()] Link: http://lkml.kernel.org/r/201907241853.yNQTrJWd%25lkp@intel.com Link: http://lkml.kernel.org/r/20190721104612.19120-3-willy@infradead.orgSigned-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Matthew Wilcox (Oracle) 提交于
Patch series "Make working with compound pages easier", v2. These three patches add three helpers and convert the appropriate places to use them. This patch (of 3): It's unnecessarily hard to find out the size of a potentially huge page. Replace 'PAGE_SIZE << compound_order(page)' with page_size(page). Link: http://lkml.kernel.org/r/20190721104612.19120-2-willy@infradead.orgSigned-off-by: NMatthew Wilcox (Oracle) <willy@infradead.org> Acked-by: NMichal Hocko <mhocko@suse.com> Reviewed-by: NAndrew Morton <akpm@linux-foundation.org> Reviewed-by: NIra Weiny <ira.weiny@intel.com> Acked-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tony Luck 提交于
Fix arch/ia64/kernel/irq_ia64.c:586:1: warning: no return statement in function returning non-void [-Wreturn-type] arch/ia64/mm/contig.c:111:6: warning: unused variable 'rc' [-Wunused-variable] arch/ia64/mm/discontig.c:189:39: warning: unused variable 'rc' [-Wunused-variable] Signed-off-by: NTony Luck <tony.luck@intel.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 9月, 2019 4 次提交
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由 Paul Burton 提交于
2 recent commits have fixed issues where _PFN_SHIFT grew too large due to the introduction of too many pgprot bits in our PTEs for some MIPS32 kernel configurations. Tracking down such issues can be tricky, so add a BUILD_BUG_ON() to help. Signed-off-by: NPaul Burton <paul.burton@mips.com> Cc: linux-mips@vger.kernel.org
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由 Paul Burton 提交于
Commit 61cbfff4 ("MIPS: pte_special()/pte_mkspecial() support") added a _PAGE_SPECIAL bit to the pgprot bits of our PTEs. Unfortunately for MIPS32 configurations with RiXi support this pushed the number of pgprot bits to 13. Since the PFN field in EntryLo begins at bit 12 this results in us shifting the most significant bit of the physical address beyond the end of the PTE, leading any mapped access to a physical address above 2GB to incorrectly access an address 2GB lower than intended. For now, disable the pte_special() support for MIPS32 configurations that support RiXi. Fixes: 61cbfff4 ("MIPS: pte_special()/pte_mkspecial() support") Signed-off-by: NPaul Burton <paul.burton@mips.com> Cc: Dmitry Korotin <dkorotin@wavecomp.com> Cc: linux-mips@vger.kernel.org
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由 Vidya Sagar 提交于
Add 3.3V and 12V supplies regulators information of x16 PCIe slot in p2972-0000 platform which is owned by C5 controller and also enable C5 controller. Signed-off-by: NVidya Sagar <vidyas@nvidia.com> Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: NAndrew Murray <andrew.murray@arm.com>
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由 Vidya Sagar 提交于
Add support to configure PCIe C5's sideband signals PERST# and CLKREQ# as output and bi-directional signals respectively which unlike other PCIe controllers sideband signals are not configured by default. Signed-off-by: NVidya Sagar <vidyas@nvidia.com> Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: NAndrew Murray <andrew.murray@arm.com>
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- 19 9月, 2019 5 次提交
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由 Aneesh Kumar K.V 提交于
__find_linux_mm_pte() returns a page table entry pointer after walking the page table without holding locks. To make it safe against a THP split and/or collapse, we disable interrupts around the lockless page table walk. However we need to keep interrupts disabled as long as we use the page table entry pointer that is returned. Fix addr_to_pfn() to do that. Fixes: ba41e1e1 ("powerpc/mce: Hookup derror (load/store) UE errors") Signed-off-by: NAneesh Kumar K.V <aneesh.kumar@linux.ibm.com> [mpe: Rearrange code slightly and tweak change log wording] Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190918145328.28602-1-aneesh.kumar@linux.ibm.com
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由 Linus Walleij 提交于
The microblaze uses the legacy APIs to dig out a GPIO pin defined in the root of the device tree to issue a hard reset of the platform. Asserting a hard reset should be done using the standard DT-enabled and fully GPIO descriptor aware driver in drivers/power/reset/gpio-restart.c using the bindings from Documentation/devicetree/bindings/power/reset/gpio-restart.txt To achieve this, first make sure microblaze makes use of the standard kernel restart path utilizing do_kernel_restart() from <linux/reboot.h>. Put in some grace time and an emergency print if the restart does not properly assert. As this is basic platform functionality we patch the DTS file and defconfig in one go for a lockstep change. Cc: Arnd Bergmann <arnd@arndb.de> Cc: Michal Simek <monstr@monstr.eu> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> [ Michal: Move machine_restart back to reset.c ] Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
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由 David Howells 提交于
Convert the spufs filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Jeremy Kerr <jk@ozlabs.org> cc: Arnd Bergmann <arnd@arndb.de> cc: linuxppc-dev@lists.ozlabs.org Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 David Howells 提交于
Convert the hypfs filesystem to the new internal mount API as the old one will be obsoleted and removed. This allows greater flexibility in communication of mount parameters between userspace, the VFS and the filesystem. See Documentation/filesystems/mount_api.txt for more information. Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Martin Schwidefsky <schwidefsky@de.ibm.com> cc: Heiko Carstens <heiko.carstens@de.ibm.com> cc: linux-s390@vger.kernel.org Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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由 David Howells 提交于
In hypfs_fill_super(), if hypfs_create_update_file() fails, sbi->update_file is left holding an error number. This is passed to hypfs_kill_super() which doesn't check for this. Fix this by not setting sbi->update_value until after we've checked for error. Fixes: 24bbb1fa ("[PATCH] s390_hypfs filesystem") Signed-off-by: NDavid Howells <dhowells@redhat.com> cc: Martin Schwidefsky <schwidefsky@de.ibm.com> cc: Heiko Carstens <heiko.carstens@de.ibm.com> cc: linux-s390@vger.kernel.org Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 18 9月, 2019 6 次提交
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由 Jeremy Cline 提交于
The referenced file does not exist, but tagged-address-abi.rst does. Signed-off-by: NJeremy Cline <jcline@redhat.com> Signed-off-by: NWill Deacon <will@kernel.org>
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由 Michal Simek 提交于
Kconfig structure has changed that's why make sense to do synchronization. Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
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由 Michal Simek 提交于
Enable Xilinx AXI emac ethernet driver for Microblaze. Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
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由 Randy Dunlap 提交于
arch/microblaze/ is missing support for get_user() of size 8 bytes, so add it by using __copy_from_user(). While there, also drop a lot of the code duplication. Fixes these build errors: drivers/infiniband/core/uverbs_main.o: In function `ib_uverbs_write': drivers/infiniband/core/.tmp_gl_uverbs_main.o:(.text+0x13a4): undefined reference to `__user_bad' drivers/android/binder.o: In function `binder_thread_write': drivers/android/.tmp_gl_binder.o:(.text+0xda6c): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xda98): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xdf10): undefined reference to `__user_bad' drivers/android/.tmp_gl_binder.o:(.text+0xe498): undefined reference to `__user_bad' drivers/android/binder.o:drivers/android/.tmp_gl_binder.o:(.text+0xea78): more undefined references to `__user_bad' follow 'make allmodconfig' now builds successfully for arch/microblaze/. Fixes: 538722ca ("microblaze: fix get_user/put_user side-effects") Reported-by: Nkbuild test robot <lkp@intel.com> Signed-off-by: NRandy Dunlap <rdunlap@infradead.org> Acked-by: NLinus Torvalds <torvalds@linux-foundation.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Steven J. Magnani <steve@digidescorp.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Jason Gunthorpe <jgg@mellanox.com> Cc: Leon Romanovsky <leonro@mellanox.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Doug Ledford <dledford@redhat.com> Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
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由 Naveen N. Rao 提交于
With support for HAVE_FUNCTION_GRAPH_RET_ADDR_PTR, ftrace_graph_ret_addr() provides more robust unwinding when function graph is in use. Update show_stack() to use the same. With dump_stack() added to sysrq_sysctl_handler(), before this patch: root@(none):/sys/kernel/debug/tracing# cat /proc/sys/kernel/sysrq CPU: 0 PID: 218 Comm: cat Not tainted 5.3.0-rc7-00868-g8453ad4a078c-dirty #20 Call Trace: [c0000000d1e13c30] [c00000000006ab98] return_to_handler+0x0/0x40 (dump_stack+0xe8/0x164) (unreliable) [c0000000d1e13c80] [c000000000145680] sysrq_sysctl_handler+0x48/0xb8 [c0000000d1e13cd0] [c00000000006ab98] return_to_handler+0x0/0x40 (proc_sys_call_handler+0x274/0x2a0) [c0000000d1e13d60] [c00000000006ab98] return_to_handler+0x0/0x40 (return_to_handler+0x0/0x40) [c0000000d1e13d80] [c00000000006ab98] return_to_handler+0x0/0x40 (__vfs_read+0x3c/0x70) [c0000000d1e13dd0] [c00000000006ab98] return_to_handler+0x0/0x40 (vfs_read+0xb8/0x1b0) [c0000000d1e13e20] [c00000000006ab98] return_to_handler+0x0/0x40 (ksys_read+0x7c/0x140) After this patch: Call Trace: [c0000000d1e33c30] [c00000000006ab58] return_to_handler+0x0/0x40 (dump_stack+0xe8/0x164) (unreliable) [c0000000d1e33c80] [c000000000145680] sysrq_sysctl_handler+0x48/0xb8 [c0000000d1e33cd0] [c00000000006ab58] return_to_handler+0x0/0x40 (proc_sys_call_handler+0x274/0x2a0) [c0000000d1e33d60] [c00000000006ab58] return_to_handler+0x0/0x40 (__vfs_read+0x3c/0x70) [c0000000d1e33d80] [c00000000006ab58] return_to_handler+0x0/0x40 (vfs_read+0xb8/0x1b0) [c0000000d1e33dd0] [c00000000006ab58] return_to_handler+0x0/0x40 (ksys_read+0x7c/0x140) [c0000000d1e33e20] [c00000000006ab58] return_to_handler+0x0/0x40 (system_call+0x5c/0x68) Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/dc89c9a887121342d9c7819482c3dabdece2a323.1567707399.git.naveen.n.rao@linux.vnet.ibm.com
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由 Naveen N. Rao 提交于
This associates entries in the ftrace_ret_stack with corresponding stack frames, enabling more robust stack unwinding. Also update the only user of ftrace_graph_ret_addr() to pass the stack pointer. Signed-off-by: NNaveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/0224f2d0971b069c678e2ff678cfc2cd1e114cfe.1567707399.git.naveen.n.rao@linux.vnet.ibm.com
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- 17 9月, 2019 1 次提交
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由 Ganesh Goudar 提交于
Since commit 4388c9b3 ("powerpc: Do not send system reset request through the oops path"), pstore dmesg file is not updated when dump is triggered from HMC. This commit modified system reset (sreset) handler to invoke fadump or kdump (if configured), without pushing dmesg to pstore. This leaves pstore to have old dmesg data which won't be much of a help if kdump fails to capture the dump. This patch fixes that by calling kmsg_dump() before heading to fadump ot kdump. Fixes: 4388c9b3 ("powerpc: Do not send system reset request through the oops path") Reviewed-by: NMahesh Salgaonkar <mahesh@linux.vnet.ibm.com> Reviewed-by: NNicholas Piggin <npiggin@gmail.com> Signed-off-by: NGanesh Goudar <ganeshgr@linux.ibm.com> Signed-off-by: NMichael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190904075949.15607-1-ganeshgr@linux.ibm.com
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