- 10 Apr, 2020 19 commits
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Logan Gunthorpe authored
The mhp_restrictions struct really doesn't specify anything resembling a restriction anymore so rename it to be mhp_params as it is a list of extended parameters. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Eric Badger <ebadger@gigaio.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Link: http://lkml.kernel.org/r/20200306170846.9333-3-logang@deltatee.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Logan Gunthorpe authored
Patch series "Allow setting caching mode in arch_add_memory() for P2PDMA", v4. Currently, the page tables created using memremap_pages() are always created with the PAGE_KERNEL cacheing mode. However, the P2PDMA code is creating pages for PCI BAR memory which should never be accessed through the cache and instead use either WC or UC. This still works in most cases, on x86, because the MTRR registers typically override the caching settings in the page tables for all of the IO memory to be UC-. However, this tends not to work so well on other arches or some rare x86 machines that have firmware which does not setup the MTRR registers in this way. Instead of this, this series proposes a change to arch_add_memory() to take the pgprot required by the mapping which allows us to explicitly set pagetable entries for P2PDMA memory to UC. This changes is pretty routine for most of the arches: x86_64, arm64 and powerpc simply need to thread the pgprot through to where the page tables are setup. x86_32 unfortunately sets up the page tables at boot so must use _set_memory_prot() to change their caching mode. ia64, s390 and sh don't appear to have an easy way to change the page tables so, for now at least, we just return -EINVAL on such mappings and thus they will not support P2PDMA memory until the work for this is done. This should be fine as they don't yet support ZONE_DEVICE. This patch (of 7): This variable is not used anywhere and should therefore be removed from the structure. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: David Hildenbrand <david@redhat.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Eric Badger <ebadger@gigaio.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Link: http://lkml.kernel.org/r/20200306170846.9333-2-logang@deltatee.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Anshuman Khandual authored
Currently there are many platforms that dont enable ARCH_HAS_PTE_SPECIAL but required to define quite similar fallback stubs for special page table entry helpers such as pte_special() and pte_mkspecial(), as they get build in generic MM without a config check. This creates two generic fallback stub definitions for these helpers, eliminating much code duplication. mips platform has a special case where pte_special() and pte_mkspecial() visibility is wider than what ARCH_HAS_PTE_SPECIAL enablement requires. This restricts those symbol visibility in order to avoid redefinitions which is now exposed through this new generic stubs and subsequent build failure. arm platform set_pte_at() definition needs to be moved into a C file just to prevent a build failure. [anshuman.khandual@arm.com: use defined(CONFIG_ARCH_HAS_PTE_SPECIAL) in mips per Thomas] Link: http://lkml.kernel.org/r/1583851924-21603-1-git-send-email-anshuman.khandual@arm.comSigned-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Guo Ren <guoren@kernel.org> [csky] Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k] Acked-by: Stafford Horne <shorne@gmail.com> [openrisc] Acked-by: Helge Deller <deller@gmx.de> [parisc] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Brian Cain <bcain@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Sam Creasey <sammy@sammy.net> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paulburton@kernel.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Vincent Chen <deanbo422@gmail.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Chris Zankel <chris@zankel.net> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Link: http://lkml.kernel.org/r/1583802551-15406-1-git-send-email-anshuman.khandual@arm.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Anshuman Khandual authored
There are many places where all basic VMA access flags (read, write, exec) are initialized or checked against as a group. One such example is during page fault. Existing vma_is_accessible() wrapper already creates the notion of VMA accessibility as a group access permissions. Hence lets just create VM_ACCESS_FLAGS (VM_READ|VM_WRITE|VM_EXEC) which will not only reduce code duplication but also extend the VMA accessibility concept in general. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Salter <msalter@redhat.com> Cc: Nick Hu <nickhu@andestech.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Rob Springer <rspringer@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Link: http://lkml.kernel.org/r/1583391014-8170-3-git-send-email-anshuman.khandual@arm.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Anshuman Khandual authored
There are many platforms with exact same value for VM_DATA_DEFAULT_FLAGS This creates a default value for VM_DATA_DEFAULT_FLAGS in line with the existing VM_STACK_DEFAULT_FLAGS. While here, also define some more macros with standard VMA access flag combinations that are used frequently across many platforms. Apart from simplification, this reduces code duplication as well. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Richard Henderson <rth@twiddle.net> Cc: Vineet Gupta <vgupta@synopsys.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Mark Salter <msalter@redhat.com> Cc: Guo Ren <guoren@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Brian Cain <bcain@codeaurora.org> Cc: Tony Luck <tony.luck@intel.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Burton <paulburton@kernel.org> Cc: Nick Hu <nickhu@andestech.com> Cc: Ley Foon Tan <ley.foon.tan@intel.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Guan Xuetao <gxt@pku.edu.cn> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jeff Dike <jdike@addtoit.com> Cc: Chris Zankel <chris@zankel.net> Link: http://lkml.kernel.org/r/1583391014-8170-2-git-send-email-anshuman.khandual@arm.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Arjun Roy authored
Add the ability to insert multiple pages at once to a user VM with lower PTE spinlock operations. The intention of this patch-set is to reduce atomic ops for tcp zerocopy receives, which normally hits the same spinlock multiple times consecutively. [akpm@linux-foundation.org: pte_alloc() no longer takes the `addr' argument] [arjunroy@google.com: add missing page_count() check to vm_insert_pages()] Link: http://lkml.kernel.org/r/20200214005929.104481-1-arjunroy.kdev@gmail.com [arjunroy@google.com: vm_insert_pages() checks if pte_index defined] Link: http://lkml.kernel.org/r/20200228054714.204424-2-arjunroy.kdev@gmail.comSigned-off-by: Arjun Roy <arjunroy@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Miller <davem@davemloft.net> Cc: Matthew Wilcox <willy@infradead.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: http://lkml.kernel.org/r/20200128025958.43490-2-arjunroy.kdev@gmail.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Arjun Roy authored
pte_index() is either defined as a macro (e.g. sparc64) or as an inlined function (e.g. x86). vm_insert_pages() depends on pte_index but it is not defined on all platforms (e.g. m68k). To fix compilation of vm_insert_pages() on architectures not providing pte_index(), we perform the following fix: 0. For platforms where it is meaningful, and defined as a macro, no change is needed. 1. For platforms where it is meaningful and defined as an inlined function, and we want to use it with vm_insert_pages(), we define a degenerate macro of the form: #define pte_index pte_index 2. vm_insert_pages() checks for the existence of a pte_index macro definition. If found, it implements a batched insert. If not found, it devolves to calling vm_insert_page() in a loop. This patch implements step 1 for x86. v3 of this patch fixes a compilation warning for an unused method. v2 of this patch moved a macro definition to a more readable location. Signed-off-by: Arjun Roy <arjunroy@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Matthew Wilcox <willy@infradead.org> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: http://lkml.kernel.org/r/20200228054714.204424-1-arjunroy.kdev@gmail.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Arjun Roy authored
pte_index() on platforms other than sparc return a numerical index. On sparc, it returns a pte_t*. This presents an issue for vm_insert_pages(), which relies on pte_index() to find the offset for a pte within a pmd, for batched inserts. This patch: 1. Modifies pte_index() for sparc to return a numerical index, like other platforms, 2. Defines pte_entry() for sparc which returns a pte_t* (as pte_index() used to), 3. Converts existing sparc callers for pte_index() to use pte_entry(). [sfr@canb.auug.org.au: remove pte_entry and just directly modified pte_offset_kernel instead] Signed-off-by: Arjun Roy <arjunroy@google.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com> Cc: Eric Dumazet <edumazet@google.com> Cc: Soheil Hassas Yeganeh <soheil@google.com> Cc: David Miller <davem@davemloft.net> Cc: Matthew Wilcox <willy@infradead.org> Cc: Arjun Roy <arjunroy.kdev@gmail.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Link: http://lkml.kernel.org/r/20200227105045.6b421d9f@canb.auug.org.auSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Arjun Roy authored
Add helper methods for vm_insert_page()/insert_page() to prepare for vm_insert_pages(), which batch-inserts pages to reduce spinlock operations when inserting multiple consecutive pages into the user page table. The intention of this patch-set is to reduce atomic ops for tcp zerocopy receives, which normally hits the same spinlock multiple times consecutively. Signed-off-by: Arjun Roy <arjunroy@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Soheil Hassas Yeganeh <soheil@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: David Miller <davem@davemloft.net> Cc: Matthew Wilcox <willy@infradead.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Link: http://lkml.kernel.org/r/20200128025958.43490-1-arjunroy.kdev@gmail.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jaewon Kim authored
On passing requirement to vm_unmapped_area, arch_get_unmapped_area and arch_get_unmapped_area_topdown did not set align_offset. Internally on both unmapped_area and unmapped_area_topdown, if info->align_mask is 0, then info->align_offset was meaningless. But commit df529cab ("mm: mmap: add trace point of vm_unmapped_area") always prints info->align_offset even though it is uninitialized. Fix this uninitialized value issue by setting it to 0 explicitly. Before: vm_unmapped_area: addr=0x755b155000 err=0 total_vm=0x15aaf0 flags=0x1 len=0x109000 lo=0x8000 hi=0x75eed48000 mask=0x0 ofs=0x4022 After: vm_unmapped_area: addr=0x74a4ca1000 err=0 total_vm=0x168ab1 flags=0x1 len=0x9000 lo=0x8000 hi=0x753d94b000 mask=0x0 ofs=0x0 Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Michel Lespinasse <walken@google.com> Cc: Borislav Petkov <bp@suse.de> Link: http://lkml.kernel.org/r/20200409094035.19457-1-jaewon31.kim@samsung.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Roman Gushchin authored
Commit 944d9fec ("hugetlb: add support for gigantic page allocation at runtime") has added the run-time allocation of gigantic pages. However it actually works only at early stages of the system loading, when the majority of memory is free. After some time the memory gets fragmented by non-movable pages, so the chances to find a contiguous 1GB block are getting close to zero. Even dropping caches manually doesn't help a lot. At large scale rebooting servers in order to allocate gigantic hugepages is quite expensive and complex. At the same time keeping some constant percentage of memory in reserved hugepages even if the workload isn't using it is a big waste: not all workloads can benefit from using 1 GB pages. The following solution can solve the problem: 1) On boot time a dedicated cma area* is reserved. The size is passed as a kernel argument. 2) Run-time allocations of gigantic hugepages are performed using the cma allocator and the dedicated cma area In this case gigantic hugepages can be allocated successfully with a high probability, however the memory isn't completely wasted if nobody is using 1GB hugepages: it can be used for pagecache, anon memory, THPs, etc. * On a multi-node machine a per-node cma area is allocated on each node. Following gigantic hugetlb allocation are using the first available numa node if the mask isn't specified by a user. Usage: 1) configure the kernel to allocate a cma area for hugetlb allocations: pass hugetlb_cma=10G as a kernel argument 2) allocate hugetlb pages as usual, e.g. echo 10 > /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages If the option isn't enabled or the allocation of the cma area failed, the current behavior of the system is preserved. x86 and arm-64 are covered by this patch, other architectures can be trivially added later. The patch contains clean-ups and fixes proposed and implemented by Aslan Bakirov and Randy Dunlap. It also contains ideas and suggestions proposed by Rik van Riel, Michal Hocko and Mike Kravetz. Thanks! Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Tested-by: Andreas Schaufler <andreas.schaufler@gmx.de> Acked-by: Mike Kravetz <mike.kravetz@oracle.com> Acked-by: Michal Hocko <mhocko@kernel.org> Cc: Aslan Bakirov <aslan@fb.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Rik van Riel <riel@surriel.com> Cc: Joonsoo Kim <js1304@gmail.com> Link: http://lkml.kernel.org/r/20200407163840.92263-3-guro@fb.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Aslan Bakirov authored
I've noticed that there is no interface exposed by CMA which would let me to declare contigous memory on particular NUMA node. This patchset adds the ability to try to allocate contiguous memory on a specific node. It will fallback to other nodes if the specified one doesn't work. Implement a new method for declaring contigous memory on particular node and keep cma_declare_contiguous() as a wrapper. [akpm@linux-foundation.org: build fix] Signed-off-by: Aslan Bakirov <aslan@fb.com> Signed-off-by: Roman Gushchin <guro@fb.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@kernel.org> Cc: Andreas Schaufler <andreas.schaufler@gmx.de> Cc: Mike Kravetz <mike.kravetz@oracle.com> Cc: Rik van Riel <riel@surriel.com> Cc: Joonsoo Kim <js1304@gmail.com> Link: http://lkml.kernel.org/r/20200407163840.92263-2-guro@fb.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Changwei Ge authored
Linux fallocate(2) with FALLOC_FL_PUNCH_HOLE mode set, its offset can exceed the inode size. Ocfs2 now doesn't allow that offset beyond inode size. This restriction is not necessary and violates fallocate(2) semantics. If fallocate(2) offset is beyond inode size, just return success and do nothing further. Otherwise, ocfs2 will crash the kernel. kernel BUG at fs/ocfs2//alloc.c:7264! ocfs2_truncate_inline+0x20f/0x360 [ocfs2] ocfs2_remove_inode_range+0x23c/0xcb0 [ocfs2] __ocfs2_change_file_space+0x4a5/0x650 [ocfs2] ocfs2_fallocate+0x83/0xa0 [ocfs2] vfs_fallocate+0x148/0x230 SyS_fallocate+0x48/0x80 do_syscall_64+0x79/0x170 Signed-off-by: Changwei Ge <chge@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Mark Fasheh <mark@fasheh.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Cc: Changwei Ge <gechangwei@live.cn> Cc: Gang He <ghe@suse.com> Cc: Jun Piao <piaojun@huawei.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200407082754.17565-1-chge@linux.alibaba.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jason Yan authored
Fix the following sparse warning: mm/page_alloc.c:106:1: warning: symbol 'pcpu_drain_mutex' was not declared. Should it be static? mm/page_alloc.c:107:1: warning: symbol '__pcpu_scope_pcpu_drain' was not declared. Should it be static? Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/20200407023925.46438-1-yanaijie@huawei.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Add description of function parameter 'mt' to fix kernel-doc warning: mm/page_alloc.c:3246: warning: Function parameter or member 'mt' not described in '__putback_isolated_page' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com> Link: http://lkml.kernel.org/r/02998bd4-0b82-2f15-2570-f86130304d1e@infradead.orgSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mauro Carvalho Chehab authored
There is a typo at the cross-reference link, causing this warning: include/linux/slab.h:11: WARNING: undefined label: memory-allocation (if the link has no caption the label must precede a section header) Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Link: http://lkml.kernel.org/r/0aeac24235d356ebd935d11e147dcc6edbb6465c.1586359676.git.mchehab+huawei@kernel.orgSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Qiujun Huang authored
There is a typo in comment, fix it. s/eariler/earlier/ Signed-off-by: Qiujun Huang <hqjagain@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Christoph Lameter <cl@linux.com> Link: http://lkml.kernel.org/r/20200405160544.1246-1-hqjagain@gmail.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jakub Kicinski authored
If a cgroup violates its memory.high constraints, we may end up unduly penalising it. For example, for the following hierarchy: A: max high, 20 usage A/B: 9 high, 10 usage A/C: max high, 10 usage We would end up doing the following calculation below when calculating high delay for A/B: A/B: 10 - 9 = 1... A: 20 - PAGE_COUNTER_MAX = 21, so set max_overage to 21. This gets worse with higher disparities in usage in the parent. I have no idea how this disappeared from the final version of the patch, but it is certainly Not Good(tm). This wasn't obvious in testing because, for a simple cgroup hierarchy with only one child, the result is usually roughly the same. It's only in more complex hierarchies that things go really awry (although still, the effects are limited to a maximum of 2 seconds in schedule_timeout_killable at a maximum). [chris@chrisdown.name: changelog] Fixes: e26733e0 ("mm, memcg: throttle allocators based on ancestral memory.high") Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Chris Down <chris@chrisdown.name> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: <stable@vger.kernel.org> [5.4.x] Link: http://lkml.kernel.org/r/20200331152424.GA1019937@chrisdown.nameSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Simon Gander authored
When removing files containing extended attributes, the hfsplus driver may remove the wrong entries from the attributes b-tree, causing major filesystem damage and in some cases even kernel crashes. To remove a file, all its extended attributes have to be removed as well. The driver does this by looking up all keys in the attributes b-tree with the cnid of the file. Each of these entries then gets deleted using the key used for searching, which doesn't contain the attribute's name when it should. Since the key doesn't contain the name, the deletion routine will not find the correct entry and instead remove the one in front of it. If parent nodes have to be modified, these become corrupt as well. This causes invalid links and unsorted entries that not even macOS's fsck_hfs is able to fix. To fix this, modify the search key before an entry is deleted from the attributes b-tree by copying the found entry's key into the search key, therefore ensuring that the correct entry gets removed from the tree. Signed-off-by: Simon Gander <simon@tuxera.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Anton Altaparmakov <anton@tuxera.com> Cc: <stable@vger.kernel.org> Link: http://lkml.kernel.org/r/20200327155541.1521-1-simon@tuxera.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 09 Apr, 2020 13 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linuxLinus Torvalds authored
Pull module updates from Jessica Yu: "Only a small cleanup this time around: a trivial conversion of zero-length arrays to flexible arrays" * tag 'modules-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux: kernel: module: Replace zero-length array with flexible-array member
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: - Ensure that the compiler and linker versions are aligned so that ld doesn't complain about not understanding a .note.gnu.property section (emitted when pointer authentication is enabled). - Force -mbranch-protection=none when the feature is not enabled, in case a compiler may choose a different default value. - Remove CONFIG_DEBUG_ALIGN_RODATA. It was never in defconfig and rarely enabled. - Fix checking 16-bit Thumb-2 instructions checking mask in the emulation of the SETEND instruction (it could match the bottom half of a 32-bit Thumb-2 instruction). * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: armv8_deprecated: Fix undef_hook mask for thumb setend arm64: remove CONFIG_DEBUG_ALIGN_RODATA feature arm64: Always force a branch protection mode when the compiler has one arm64: Kconfig: ptrauth: Add binutils version check to fix mismatch init/kconfig: Add LD_VERSION Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linuxLinus Torvalds authored
Pull more powerpc updates from Michael Ellerman: "The bulk of this is the series to make CONFIG_COMPAT user-selectable, it's been around for a long time but was blocked behind the syscall-in-C series. Plus there's also a few fixes and other minor things. Summary: - A fix for a crash in machine check handling on pseries (ie. guests) - A small series to make it possible to disable CONFIG_COMPAT, and turn it off by default for ppc64le where it's not used. - A few other miscellaneous fixes and small improvements. Thanks to: Alexey Kardashevskiy, Anju T Sudhakar, Arnd Bergmann, Christophe Leroy, Dan Carpenter, Ganesh Goudar, Geert Uytterhoeven, Geoff Levand, Mahesh Salgaonkar, Markus Elfring, Michal Suchanek, Nicholas Piggin, Stephen Boyd, Wen Xiong" * tag 'powerpc-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Always build the tm-poison test 64-bit powerpc: Improve ppc_save_regs() Revert "powerpc/64: irq_work avoid interrupt when called with hardware irqs enabled" powerpc/time: Replace <linux/clk-provider.h> by <linux/of_clk.h> powerpc/pseries/ddw: Extend upper limit for huge DMA window for persistent memory powerpc/perf: split callchain.c by bitness powerpc/64: Make COMPAT user-selectable disabled on littleendian by default. powerpc/64: make buildable without CONFIG_COMPAT powerpc/perf: consolidate valid_user_sp -> invalid_user_sp powerpc/perf: consolidate read_user_stack_32 powerpc: move common register copy functions from signal_32.c to signal.c powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfig powerpc/ps3: Remove an unneeded NULL check powerpc/ps3: Remove duplicate error message powerpc/powernv: Re-enable imc trace-mode in kernel powerpc/perf: Implement a global lock to avoid races between trace, core and thread imc events. powerpc/pseries: Fix MCE handling on pseries selftests/eeh: Skip ahci adapters powerpc/64s: Fix doorbell wakeup msgclr optimisation
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
Pull m68knommu update from Greg Ungerer: "Only a single commit, to remove all use of the obsolete setup_irq() calls within the m68knommu architecture code" * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68k: Replace setup_irq() by request_irq()
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V updates from Palmer Dabbelt: "This contains a handful of new features: - Partial support for the Kendryte K210. There are still a few outstanding issues that I have patches for, but I don't actually have a board to test them so they're not included yet. - SBI v0.2 support. - Fixes to support for building with LLVM-based toolchains. The resulting images are known not to boot yet. I don't anticipate a part two, but I'll probably have something early in the RCs to finish up the K210 support" * tag 'riscv-for-linus-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (38 commits) riscv: create a loader.bin boot image for Kendryte SoC riscv: Kendryte K210 default config riscv: Add Kendryte K210 device tree riscv: Select required drivers for Kendryte SOC riscv: Add Kendryte K210 SoC support riscv: Add SOC early init support riscv: Unaligned load/store handling for M_MODE RISC-V: Support cpu hotplug RISC-V: Add supported for ordered booting method using HSM RISC-V: Add SBI HSM extension definitions RISC-V: Export SBI error to linux error mapping function RISC-V: Add cpu_ops and modify default booting method RISC-V: Move relocate and few other functions out of __init RISC-V: Implement new SBI v0.2 extensions RISC-V: Introduce a new config for SBI v0.1 RISC-V: Add SBI v0.2 extension definitions RISC-V: Add basic support for SBI v0.2 RISC-V: Mark existing SBI as 0.1 SBI. riscv: Use macro definition instead of magic number riscv: Add support to dump the kernel page tables ...
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git://github.com/martinetd/linuxLinus Torvalds authored
Pull 9p documentation update from Dominique Martinet: "Document the new O_NONBLOCK short read behavior" * tag '9p-for-5.7-2' of git://github.com/martinetd/linux: 9p: document short read behaviour with O_NONBLOCK
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git://github.com/ceph/ceph-clientLinus Torvalds authored
Pull ceph updates from Ilya Dryomov: "The main items are: - support for asynchronous create and unlink (Jeff Layton). Creates and unlinks are satisfied locally, without waiting for a reply from the MDS, provided the client has been granted appropriate caps (new in v15.y.z ("Octopus") release). This can be a big help for metadata heavy workloads such as tar and rsync. Opt-in with the new nowsync mount option. - multiple blk-mq queues for rbd (Hannes Reinecke and myself). When the driver was converted to blk-mq, we settled on a single blk-mq queue because of a global lock in libceph and some other technical debt. These have since been addressed, so allocate a queue per CPU to enhance parallelism. - don't hold onto caps that aren't actually needed (Zheng Yan). This has been our long-standing behavior, but it causes issues with some active/standby applications (synchronous I/O, stalls if the standby goes down, etc). - .snap directory timestamps consistent with ceph-fuse (Luis Henriques)" * tag 'ceph-for-5.7-rc1' of git://github.com/ceph/ceph-client: (49 commits) ceph: fix snapshot directory timestamps ceph: wait for async creating inode before requesting new max size ceph: don't skip updating wanted caps when cap is stale ceph: request new max size only when there is auth cap ceph: cleanup return error of try_get_cap_refs() ceph: return ceph_mdsc_do_request() errors from __get_parent() ceph: check all mds' caps after page writeback ceph: update i_requested_max_size only when sending cap msg to auth mds ceph: simplify calling of ceph_get_fmode() ceph: remove delay check logic from ceph_check_caps() ceph: consider inode's last read/write when calculating wanted caps ceph: always renew caps if mds_wanted is insufficient ceph: update dentry lease for async create ceph: attempt to do async create when possible ceph: cache layout in parent dir on first sync create ceph: add new MDS req field to hold delegated inode number ceph: decode interval_sets for delegated inos ceph: make ceph_fill_inode non-static ceph: perform asynchronous unlink if we have sufficient caps ceph: don't take refs to want mask unless we have all bits ...
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfsLinus Torvalds authored
Pull overlayfs update from Miklos Szeredi: - Fix failure to copy-up files from certain NFSv4 mounts - Sort out inconsistencies between st_ino and i_ino (used in /proc/locks) - Allow consistent (POSIX-y) inode numbering in more cases - Allow virtiofs to be used as upper layer - Miscellaneous cleanups and fixes * tag 'ovl-update-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs: ovl: document xino expected behavior ovl: enable xino automatically in more cases ovl: avoid possible inode number collisions with xino=on ovl: use a private non-persistent ino pool ovl: fix WARN_ON nlink drop to zero ovl: fix a typo in comment ovl: replace zero-length array with flexible-array member ovl: ovl_obtain_alias(): don't call d_instantiate_anon() for old ovl: strict upper fs requirements for remote upper fs ovl: check if upper fs supports RENAME_WHITEOUT ovl: allow remote upper ovl: decide if revalidate needed on a per-dentry basis ovl: separate detection of remote upper layer from stacked overlay ovl: restructure dentry revalidation ovl: ignore failure to copy up unknown xattrs ovl: document permission model ovl: simplify i_ino initialization ovl: factor out helper ovl_get_root() ovl: fix out of date comment and unreachable code ovl: fix value of i_ino for lower hardlink corner case
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull iomap fix from Darrick Wong: "Fix a problem in readahead where we can crash if we can't allocate a full bio due to GFP_NORETRY" * tag 'iomap-5.7-merge-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: iomap: Handle memory allocation failure in readahead
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds authored
Pull crypto fixes from Herbert Xu: "This fixes a Kconfig dependency for hisilicon as well as a double free in marvell/octeontx" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: crypto: marvell/octeontx - fix double free of ptr crypto: hisilicon - Fix build error
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git://www.linux-watchdog.org/linux-watchdogLinus Torvalds authored
Pull watchdog updates from Wim Van Sebroeck: - add TI K3 RTI watchdog - add stop_on_reboot parameter to control reboot policy - wm831x_wdt: Remove GPIO handling - several small fixes, improvements and clean-ups * tag 'linux-watchdog-5.7-rc1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: Add K3 RTI watchdog support dt-bindings: watchdog: Add support for TI K3 RTI watchdog watchdog: ziirave_wdt: change name to be more specific watchdog: orion: use 0 for unset heartbeat watchdog: npcm: remove whitespaces watchdog: reset last_hw_keepalive time at start watchdog: imx2_wdt: Drop .remove callback watchdog: Add stop_on_reboot parameter to control reboot policy watchdog: wm831x_wdt: Remove GPIO handling watchdog: imx7ulp: Remove unused include of init.h watchdog: imx_sc_wdt: Remove unused includes watchdog: qcom: Use irq flags from firmware watchdog: pm8916_wdt: Add system sleep callbacks watchdog: qcom-wdt: disable pretimeout on timer platform
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Linus Torvalds authored
Merge tag 'tag-chrome-platform-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux Pull chrome platform updates from Benson Leung: cros-usbpd-notify and cros_ec_typec: - Add a new notification driver that handles and dispatches USB PD related events to other drivers. - Add a Type C connector class driver for cros_ec CrOS EC: - Introduce a new cros_ec_cmd_xfer_status helper Sensors/iio: - A series from Gwendal that adds Cros EC sensor hub FIFO support Wilco EC: - Fix a build warning. - Platform data shouldn't include kernel.h Misc: - i2c api conversion complete, with i2c_new_client_device instead of i2c_new_device in chromeos_laptop. - Replace zero-length array with flexible-array member in cros_ec_chardev and wilco_ec - Update new structure for SPI transfer delays in cros_ec_spi * tag 'tag-chrome-platform-for-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux: (34 commits) platform/chrome: cros_ec_spi: Wait for USECS, not NSECS iio: cros_ec: Use Hertz as unit for sampling frequency iio: cros_ec: Report hwfifo_watermark_max iio: cros_ec: Expose hwfifo_timeout iio: cros_ec: Remove pm function iio: cros_ec: Register to cros_ec_sensorhub when EC supports FIFO iio: expose iio_device_set_clock iio: cros_ec: Move function description to .c file platform/chrome: cros_ec_sensorhub: Add median filter platform/chrome: cros_ec_sensorhub: Add code to spread timestmap platform/chrome: cros_ec_sensorhub: Add FIFO support platform/chrome: cros_ec_sensorhub: Add the number of sensors in sensorhub platform/chrome: chromeos_laptop: make I2C API conversion complete platform/chrome: wilco_ec: event: Replace zero-length array with flexible-array member platform/chrome: cros_ec_chardev: Replace zero-length array with flexible-array member platform/chrome: cros_ec_typec: Update port info from EC platform/chrome: Add Type C connector class driver platform/chrome: cros_usbpd_notify: Pull PD_HOST_EVENT status platform/chrome: cros_usbpd_notify: Amend ACPI driver to plat platform/chrome: cros_usbpd_notify: Add driver data struct ...
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm and dax updates from Dan Williams: "There were multiple touches outside of drivers/nvdimm/ this round to add cross arch compatibility to the devm_memremap_pages() interface, enhance numa information for persistent memory ranges, and add a zero_page_range() dax operation. This cycle I switched from the patchwork api to Konstantin's b4 script for collecting tags (from x86, PowerPC, filesystem, and device-mapper folks), and everything looks to have gone ok there. This has all appeared in -next with no reported issues. Summary: - Add support for region alignment configuration and enforcement to fix compatibility across architectures and PowerPC page size configurations. - Introduce 'zero_page_range' as a dax operation. This facilitates filesystem-dax operation without a block-device. - Introduce phys_to_target_node() to facilitate drivers that want to know resulting numa node if a given reserved address range was onlined. - Advertise a persistence-domain for of_pmem and papr_scm. The persistence domain indicates where cpu-store cycles need to reach in the platform-memory subsystem before the platform will consider them power-fail protected. - Promote numa_map_to_online_node() to a cross-kernel generic facility. - Save x86 numa information to allow for node-id lookups for reserved memory ranges, deploy that capability for the e820-pmem driver. - Pick up some miscellaneous minor fixes, that missed v5.6-final, including a some smatch reports in the ioctl path and some unit test compilation fixups. - Fixup some flexible-array declarations" * tag 'libnvdimm-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (29 commits) dax: Move mandatory ->zero_page_range() check in alloc_dax() dax,iomap: Add helper dax_iomap_zero() to zero a range dax: Use new dax zero page method for zeroing a page dm,dax: Add dax zero_page_range operation s390,dcssblk,dax: Add dax zero_page_range operation to dcssblk driver dax, pmem: Add a dax operation zero_page_range pmem: Add functions for reading/writing page to/from pmem libnvdimm: Update persistence domain value for of_pmem and papr_scm device tools/test/nvdimm: Fix out of tree build libnvdimm/region: Fix build error libnvdimm/region: Replace zero-length array with flexible-array member libnvdimm/label: Replace zero-length array with flexible-array member ACPI: NFIT: Replace zero-length array with flexible-array member libnvdimm/region: Introduce an 'align' attribute libnvdimm/region: Introduce NDD_LABELING libnvdimm/namespace: Enforce memremap_compat_align() libnvdimm/pfn: Prevent raw mode fallback if pfn-infoblock valid libnvdimm: Out of bounds read in __nd_ioctl() acpi/nfit: improve bounds checking for 'func' mm/memremap_pages: Introduce memremap_compat_align() ...
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- 08 Apr, 2020 8 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommuLinus Torvalds authored
Pull iommu updates from Joerg Roedel: - ARM-SMMU support for the TLB range invalidation command in SMMUv3.2 - ARM-SMMU introduction of command batching helpers to batch up CD and ATC invalidation - ARM-SMMU support for PCI PASID, along with necessary PCI symbol exports - Introduce a generic (actually rename an existing) IOMMU related pointer in struct device and reduce the IOMMU related pointers - Some fixes for the OMAP IOMMU driver to make it build on 64bit architectures - Various smaller fixes and improvements * tag 'iommu-updates-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu: (39 commits) iommu: Move fwspec->iommu_priv to struct dev_iommu iommu/virtio: Use accessor functions for iommu private data iommu/qcom: Use accessor functions for iommu private data iommu/mediatek: Use accessor functions for iommu private data iommu/renesas: Use accessor functions for iommu private data iommu/arm-smmu: Use accessor functions for iommu private data iommu/arm-smmu: Refactor master_cfg/fwspec usage iommu/arm-smmu-v3: Use accessor functions for iommu private data iommu: Introduce accessors for iommu private data iommu/arm-smmu: Fix uninitilized variable warning iommu: Move iommu_fwspec to struct dev_iommu iommu: Rename struct iommu_param to dev_iommu iommu/tegra-gart: Remove direct access of dev->iommu_fwspec drm/msm/mdp5: Remove direct access of dev->iommu_fwspec ACPI/IORT: Remove direct access of dev->iommu_fwspec iommu: Define dev_iommu_fwspec_get() for !CONFIG_IOMMU_API iommu/virtio: Reject IOMMU page granule larger than PAGE_SIZE iommu/virtio: Fix freeing of incomplete domains iommu/virtio: Fix sparse warning iommu/vt-d: Add build dependency on IOASID ...
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull more kvm updates from Paolo Bonzini: "s390: - nested virtualization fixes x86: - split svm.c - miscellaneous fixes" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: VMX: fix crash cleanup when KVM wasn't used KVM: X86: Filter out the broadcast dest for IPI fastpath KVM: s390: vsie: Fix possible race when shadowing region 3 tables KVM: s390: vsie: Fix delivery of addressing exceptions KVM: s390: vsie: Fix region 1 ASCE sanity shadow address checks KVM: nVMX: don't clear mtf_pending when nested events are blocked KVM: VMX: Remove unnecessary exception trampoline in vmx_vmenter KVM: SVM: Split svm_vcpu_run inline assembly to separate file KVM: SVM: Move SEV code to separate file KVM: SVM: Move AVIC code to separate file KVM: SVM: Move Nested SVM Implementation to nested.c kVM SVM: Move SVM related files to own sub-directory
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git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhostLinus Torvalds authored
Pull virtio updates from Michael Tsirkin: - Some bug fixes - The new vdpa subsystem with two first drivers * tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost: virtio-balloon: Revert "virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM" vdpa: move to drivers/vdpa virtio: Intel IFC VF driver for VDPA vdpasim: vDPA device simulator vhost: introduce vDPA-based backend virtio: introduce a vDPA based transport vDPA: introduce vDPA bus vringh: IOTLB support vhost: factor out IOTLB vhost: allow per device message handler vhost: refine vhost and vringh kconfig virtio-balloon: Switch back to OOM handler for VIRTIO_BALLOON_F_DEFLATE_ON_OOM virtio-net: Introduce hash report feature virtio-net: Introduce RSS receive steering feature virtio-net: Introduce extended RSC feature tools/virtio: option to build an out of tree module
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Fredrik Strupe authored
For thumb instructions, call_undef_hook() in traps.c first reads a u16, and if the u16 indicates a T32 instruction (u16 >= 0xe800), a second u16 is read, which then makes up the the lower half-word of a T32 instruction. For T16 instructions, the second u16 is not read, which makes the resulting u32 opcode always have the upper half set to 0. However, having the upper half of instr_mask in the undef_hook set to 0 masks out the upper half of all thumb instructions - both T16 and T32. This results in trapped T32 instructions with the lower half-word equal to the T16 encoding of setend (b650) being matched, even though the upper half-word is not 0000 and thus indicates a T32 opcode. An example of such a T32 instruction is eaa0b650, which should raise a SIGILL since T32 instructions with an eaa prefix are unallocated as per Arm ARM, but instead works as a SETEND because the second half-word is set to b650. This patch fixes the issue by extending instr_mask to include the upper u32 half, which will still match T16 instructions where the upper half is 0, but not T32 instructions. Fixes: 2d888f48 ("arm64: Emulate SETEND for AArch32 tasks") Cc: <stable@vger.kernel.org> # 4.0.x- Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Fredrik Strupe <fredrik@strupe.net> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Hillf Danton authored
__get_user_pages_locked() will return 0 instead of -EINTR after commit 4426e945 ("mm/gup: allow VM_FAULT_RETRY for multiple times") which added extra code to allow gup detect fatal signal faster. Restore the original -EINTR behavior. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Fixes: 4426e945 ("mm/gup: allow VM_FAULT_RETRY for multiple times") Reported-by: syzbot+3be1a33f04dc782e9fd5@syzkaller.appspotmail.com Signed-off-by: Hillf Danton <hdanton@sina.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Peter Xu <peterx@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Dominique Martinet authored
Regular files opened with O_NONBLOCK allow read to return after a single round-trip with the server instead of trying to fill buffer. Add a few lines in 9p documentation to describe that. Link: http://lkml.kernel.org/r/1586193572-1375-1-git-send-email-asmadeus@codewreck.orgSigned-off-by: Dominique Martinet <dominique.martinet@cea.fr>
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "This is a set of fixes that have queued up, I think I might have another pull with some more before rc1 but I'd like to dequeue what I have now just in case Easter is more eggciting that expected. The main thing in here is a fix for a longstanding nouveau power management issues on certain laptops, it should help runtime suspend/resume for a lot of people. There is also a reverted patch for some drm_mm behaviour in atomic contexts. Summary: core: - revert drm_mm atomic patch - dt binding fixes fbcon: - null ptr error fix i915: - GVT fixes nouveau: - runpm fix - svm fixes amdgpu: - HDCP fixes - gfx10 fix - Misc display fixes - BACO fixes amdkfd: - Fix memory leak vboxvideo: - remove conflicting fbs vc4: - mode validation fix xen: - fix PTR_ERR usage" * tag 'drm-next-2020-04-08' of git://anongit.freedesktop.org/drm/drm: (41 commits) drm/nouveau/kms/nv50-: wait for FIFO space on PIO channels drm/nouveau/nvif: protect waits against GPU falling off the bus drm/nouveau/nvif: access PTIMER through usermode class, if available drm/nouveau/gr/gp107,gp108: implement workaround for HW hanging during init drm/nouveau: workaround runpm fail by disabling PCI power management on certain intel bridges drm/nouveau/svm: remove useless SVM range check drm/nouveau/svm: check for SVM initialized before migrating drm/nouveau/svm: fix vma range check for migration drm/nouveau: remove checks for return value of debugfs functions drm/nouveau/ttm: evict other IO mappings when running out of BAR1 space drm/amdkfd: kfree the wrong pointer drm/amd/display: increase HDCP authentication delay drm/amd/display: Correctly cancel future watchdog and callback events drm/amd/display: Don't try hdcp1.4 when content_type is set to type1 drm/amd/powerplay: move the ASIC specific nbio operation out of smu_v11_0.c drm/amd/powerplay: drop redundant BIF doorbell interrupt operations drm/amd/display: Fix dcn21 num_states drm/amd/display: Enable BT2020 in COLOR_ENCODING property drm/amd/display: LFC not working on 2.0x range monitors (v2) drm/amd/display: Support plane level CTM ...
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
Pull input updates from Dmitry Torokhov: "An update to the Goodix touchscreen driver to enable it work properly on various Bay Trail and Cherry Trail devices, and a few other assorted changes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (26 commits) Input: update SPDX tag for input-event-codes.h Input: i8042 - add Acer Aspire 5738z to nomux list Input: goodix - fix compilation when ACPI support is disabled dt-bindings: touchscreen: Convert edt-ft5x06 to json-schema Input: of_touchscreen - explicitly choose axis Input: goodix - support gt9147 touchpanel dt-bindings: touchscreen: goodix: support of gt9147 Input: goodix - add support for Goodix GT917S Input: goodix - use string-based chip ID dt-bindings: input: touchscreen: add compatible string for Goodix GT917S Input: goodix - add support for more then one touch-key Input: goodix - fix spurious key release events Input: goodix - try to reset the controller if the i2c-test fails Input: goodix - restore config on resume if necessary Input: goodix - make goodix_send_cfg() take a raw buffer as argument Input: goodix - add minimum firmware size check Input: goodix - save a copy of the config from goodix_read_config() Input: goodix - move defines to above struct goodix_ts_data declaration Input: goodix - add support for controlling the IRQ pin through ACPI methods Input: goodix - add support for getting IRQ + reset GPIOs on Bay Trail devices ...
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