- 18 Jul, 2022 40 commits
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Miaohe Lin authored
When pmd is non-present, pmd_pfn returns an insane value. So we should check pmd_present first to avoid acquiring such insane value and also avoid touching possible cold huge_zero_pfn cache line when pmd isn't present. Link: https://lkml.kernel.org/r/20220704132201.14611-11-linmiaohe@huawei.comSigned-off-by:
Miaohe Lin <linmiaohe@huawei.com> Reviewed-by:
Muchun Song <songmuchun@bytedance.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Yang Shi <shy828301@gmail.com> Cc: Zach O'Keefe <zokeefe@google.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org>
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Miaohe Lin authored
The comment about deposited pgtable is borrowed from zap_huge_pmd but there's no deposited pgtable stuff for huge pud in zap_huge_pud. Remove it to avoid confusion. Link: https://lkml.kernel.org/r/20220704132201.14611-10-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
Use helper macro __ATTR_RW to define use_zero_page_attr, defrag_attr and enabled_attr to make code more clear. Minor readability improvement. Link: https://lkml.kernel.org/r/20220704132201.14611-9-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
Use helper function vma_lookup to lookup the needed vma to simplify the code. Minor readability improvement. Link: https://lkml.kernel.org/r/20220704132201.14611-8-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
mmun_start indicates mmu_notifier start address but there's no mmu_notifier stuff in remove_migration_pmd. This will make it hard to get the meaning of mmun_start. Rename it to haddr to avoid confusing readers and also imporve readability. Link: https://lkml.kernel.org/r/20220704132201.14611-7-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
Use helper touch_pmd to set pmd accessed to simplify the code and improve the readability. No functional change intended. Link: https://lkml.kernel.org/r/20220704132201.14611-6-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
Use helper touch_pud to set pud accessed to simplify the code and improve the readability. No functional change intended. Link: https://lkml.kernel.org/r/20220704132201.14611-5-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
__pud_trans_huge_lock returns page table lock pointer if a given pud maps a thp instead of 'true' since introduced. Fix corresponding comments. Link: https://lkml.kernel.org/r/20220704132201.14611-4-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
vma->vm_page_prot is read lockless from the rmap_walk, it may be updated concurrently. Using READ_ONCE to prevent the risk of reading intermediate values. Link: https://lkml.kernel.org/r/20220704132201.14611-3-linmiaohe@huawei.comSigned-off-by:
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Miaohe Lin authored
Patch series "A few cleanup patches for huge_memory", v3. This series contains a few cleaup patches to remove duplicated codes, add/use helper functions, fix some obsolete comments and so on. More details can be found in the respective changelogs. This patch (of 16): Arches with special requirements for evicting THP backing TLB entries can implement flush_pmd_tlb_range. Otherwise also, it can help optimize TLB flush in THP regime. Using flush_pmd_tlb_range to take advantage of this in move_huge_pmd. Link: https://lkml.kernel.org/r/20220704132201.14611-1-linmiaohe@huawei.com Link: https://lkml.kernel.org/r/20220704132201.14611-2-linmiaohe@huawei.comSigned-off-by:
Zach O'Keefe <zokeefe@google.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Matthew Wilcox <willy@infradead.org> Signed-off-by:
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Mike Rapoport authored
PMD_ORDER denotes order of magnitude for a PMD entry, i.e PMD entry size is 2 ^ PMD_ORDER. Rename PMD_ORDER to PMD_ENTRY_ORDER to allow a generic definition of PMD_ORDER as order of a PMD allocation: (PMD_SHIFT - PAGE_SHIFT). Link: https://lkml.kernel.org/r/20220705154708.181258-16-rppt@kernel.orgSigned-off-by:
Mike Rapoport <rppt@linux.ibm.com> Acked-by:
Russell King (Oracle) <rmk+kernel@armlinux.org.uk> Signed-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-15-rppt@kernel.orgSigned-off-by:
Helge Deller <deller@gmx.de> Acked-by:
Max Filippov <jcmvbkbc@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Xuerui Wang <kernel@xen0n.name> Signed-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. Link: https://lkml.kernel.org/r/20220703141203.147893-14-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. Since its always hardwired to 0, simply drop it. [rppt@linux.ibm.com: drop extra BLANK() line in arch/loongarch/kernel/asm-offsets.c] Link: https://lkml.kernel.org/r/20220705154708.181258-13-rppt@kernel.org Link: https://lkml.kernel.org/r/20220703141203.147893-13-rppt@kernel.orgSigned-off-by:
Huacai Chen <chenhuacai@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Guo Ren <guoren@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Xuerui Wang <kernel@xen0n.name> Signed-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PUD. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-12-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PMD. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-11-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PTE. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-10-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-9-rppt@kernel.orgSigned-off-by:
Dinh Nguyen <dinguyen@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Guo Ren <guoren@kernel.org> Cc: Helge Deller <deller@gmx.de> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Xuerui Wang <kernel@xen0n.name> Signed-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PTE. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-8-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. While at it remove unused defintion of _PGD_ORDER in asm-offsets. Link: https://lkml.kernel.org/r/20220703141203.147893-7-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PTE. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-6-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PUD. Link: https://lkml.kernel.org/r/20220703141203.147893-5-rppt@kernel.orgSigned-off-by:
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Matthew Wilcox (Oracle) authored
This is the order of the page table allocation, not the order of a PMD. While at it remove unused defintion of _PMD_ORDER in asm-offsets. Link: https://lkml.kernel.org/r/20220703141203.147893-4-rppt@kernel.orgSigned-off-by:
Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by:
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Mike Rapoport authored
This is the order of the page table allocation, not the order of a PGD. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220703141203.147893-3-rppt@kernel.orgSigned-off-by:
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Mike Rapoport authored
Patch series "arch: make PxD_ORDER generically available", v2. The question what does PxD_ORDER define raises from time to time and there is still a conflict between MIPS and DAX definitions. Some time ago Matthew Wilcox suggested to use PMD_TABLE_ORDER to define the order of page table allocation: [1] https://lore.kernel.org/linux-arch/YPCJftSTUBEnq2lI@casper.infradead.org/ The parisc patch made it in, but mips didn't. Now mips defines from asm/include/pgtable.h were copied to loongarch which made it worse. Let's deal with it once and for all and rename PxD_ORDER defines to PxD_TABLE_ORDER or just drop them when the only possible order of page table is 0. This patch (of 15): This is the order of the page table allocation, not the order of a PTE. Since its always hardwired to 0, simply drop it. Link: https://lkml.kernel.org/r/20220705154708.181258-1-rppt@kernel.org Link: https://lkml.kernel.org/r/20220703141203.147893-1-rppt@kernel.org Link: https://lkml.kernel.org/r/20220703141203.147893-2-rppt@kernel.orgSigned-off-by:
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Anshuman Khandual authored
Now all the platforms enable ARCH_HAS_GET_PAGE_PROT. They define and export own vm_get_page_prot() whether custom or standard DECLARE_VM_GET_PAGE_PROT. Hence there is no need for default generic fallback for vm_get_page_prot(). Just drop this fallback and also ARCH_HAS_GET_PAGE_PROT mechanism. Link: https://lkml.kernel.org/r/20220711070600.2378316-27-anshuman.khandual@arm.comSigned-off-by:
Anshuman Khandual <anshuman.khandual@arm.com> Reviewed-by:
Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-26-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-25-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-24-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-23-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-22-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-21-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-20-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-19-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-18-anshuman.khandual@arm.comSigned-off-by:
Guo Ren <guoren@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Brian Cain <bcain@quicinc.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-17-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-16-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-15-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-14-anshuman.khandual@arm.comSigned-off-by:
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Anshuman Khandual authored
This enables ARCH_HAS_VM_GET_PAGE_PROT on the platform and exports standard vm_get_page_prot() implementation via DECLARE_VM_GET_PAGE_PROT, which looks up a private and static protection_map[] array. Subsequently all __SXXX and __PXXX macros can be dropped which are no longer needed. Link: https://lkml.kernel.org/r/20220711070600.2378316-13-anshuman.khandual@arm.comSigned-off-by:
Brian Cain <bcain@quicinc.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Christophe Leroy <christophe.leroy@csgroup.eu> Cc: Christoph Hellwig <hch@infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Chris Zankel <chris@zankel.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Dinh Nguyen <dinguyen@kernel.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Guo Ren <guoren@kernel.org> Cc: Heiko Carstens <hca@linux.ibm.com> Cc: Huacai Chen <chenhuacai@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Jonas Bonn <jonas@southpole.se> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Michal Simek <monstr@monstr.eu> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Rich Felker <dalias@libc.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Stafford Horne <shorne@gmail.com> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vineet Gupta <vgupta@kernel.org> Cc: WANG Xuerui <kernel@xen0n.name> Cc: Will Deacon <will@kernel.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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