diff options
Diffstat (limited to 'arch')
28 files changed, 109 insertions, 42 deletions
diff --git a/arch/alpha/include/asm/mmzone.h b/arch/alpha/include/asm/mmzone.h index 7ee144f484f1..9b521c857436 100644 --- a/arch/alpha/include/asm/mmzone.h +++ b/arch/alpha/include/asm/mmzone.h @@ -8,8 +8,6 @@ #include <asm/smp.h> -struct bootmem_data_t; /* stupid forward decl. */ - /* * Following are macros that are specific to this numa platform. */ diff --git a/arch/alpha/kernel/syscalls/syscallhdr.sh b/arch/alpha/kernel/syscalls/syscallhdr.sh index e5b99bd2e5e7..1780e861492a 100644 --- a/arch/alpha/kernel/syscalls/syscallhdr.sh +++ b/arch/alpha/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/csky/mm/fault.c b/arch/csky/mm/fault.c index d3c61b83e195..4e6dc68f3258 100644 --- a/arch/csky/mm/fault.c +++ b/arch/csky/mm/fault.c @@ -141,7 +141,7 @@ good_area: if (!(vma->vm_flags & VM_WRITE)) goto bad_area; } else { - if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) + if (unlikely(!vma_is_accessible(vma))) goto bad_area; } diff --git a/arch/ia64/kernel/syscalls/syscallhdr.sh b/arch/ia64/kernel/syscalls/syscallhdr.sh index 0c2d2c748565..f407b6e53283 100644 --- a/arch/ia64/kernel/syscalls/syscallhdr.sh +++ b/arch/ia64/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S index 1ec6b703c5b4..6b5652ee76f9 100644 --- a/arch/ia64/kernel/vmlinux.lds.S +++ b/arch/ia64/kernel/vmlinux.lds.S @@ -54,6 +54,8 @@ SECTIONS { CPUIDLE_TEXT LOCK_TEXT KPROBES_TEXT + IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.gnu.linkonce.t*) } diff --git a/arch/m68k/mm/fault.c b/arch/m68k/mm/fault.c index f7afb9897966..3bfb5c8ac3c7 100644 --- a/arch/m68k/mm/fault.c +++ b/arch/m68k/mm/fault.c @@ -125,7 +125,7 @@ good_area: case 1: /* read, present */ goto acc_err; case 0: /* read, not present */ - if (!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE))) + if (unlikely(!vma_is_accessible(vma))) goto acc_err; } diff --git a/arch/microblaze/kernel/syscalls/syscallhdr.sh b/arch/microblaze/kernel/syscalls/syscallhdr.sh index 2e9062a926a3..a914854f8d9f 100644 --- a/arch/microblaze/kernel/syscalls/syscallhdr.sh +++ b/arch/microblaze/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/mips/kernel/syscalls/syscallhdr.sh b/arch/mips/kernel/syscalls/syscallhdr.sh index d2bcfa8f4d1a..2e241e713a7d 100644 --- a/arch/mips/kernel/syscalls/syscallhdr.sh +++ b/arch/mips/kernel/syscalls/syscallhdr.sh @@ -32,6 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" - printf "\n" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c index 4a0eafe3d932..f8d62cd83b36 100644 --- a/arch/mips/mm/fault.c +++ b/arch/mips/mm/fault.c @@ -142,7 +142,7 @@ good_area: goto bad_area; } } else { - if (!(vma->vm_flags & (VM_READ | VM_WRITE | VM_EXEC))) + if (unlikely(!vma_is_accessible(vma))) goto bad_area; } } diff --git a/arch/nds32/kernel/vmlinux.lds.S b/arch/nds32/kernel/vmlinux.lds.S index f679d3397436..7a6c1cefe3fe 100644 --- a/arch/nds32/kernel/vmlinux.lds.S +++ b/arch/nds32/kernel/vmlinux.lds.S @@ -47,6 +47,7 @@ SECTIONS LOCK_TEXT KPROBES_TEXT IRQENTRY_TEXT + SOFTIRQENTRY_TEXT *(.fixup) } diff --git a/arch/parisc/kernel/syscalls/syscallhdr.sh b/arch/parisc/kernel/syscalls/syscallhdr.sh index 50242b747d7c..730db288fe54 100644 --- a/arch/parisc/kernel/syscalls/syscallhdr.sh +++ b/arch/parisc/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/powerpc/kernel/syscalls/syscallhdr.sh b/arch/powerpc/kernel/syscalls/syscallhdr.sh index c0a9a32937f1..02d6751f3be3 100644 --- a/arch/powerpc/kernel/syscalls/syscallhdr.sh +++ b/arch/powerpc/kernel/syscalls/syscallhdr.sh @@ -32,6 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" - printf "\n" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 425d13806645..df9989cf7ba3 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -422,7 +422,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, break; } } else if (vma && hva >= vma->vm_start && - (vma->vm_flags & VM_HUGETLB)) { + is_vm_hugetlb_page(vma)) { unsigned long psize = vma_kernel_pagesize(vma); tsize = (gtlbe->mas1 & MAS1_TSIZE_MASK) >> diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index d15f0f0ee806..84af6c8eecf7 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -314,7 +314,7 @@ static bool access_error(bool is_write, bool is_exec, return false; } - if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))) + if (unlikely(!vma_is_accessible(vma))) return true; /* * We should ideally do the vma pkey access check here. But in the diff --git a/arch/powerpc/platforms/powernv/memtrace.c b/arch/powerpc/platforms/powernv/memtrace.c index d6d64f8718e6..13b369d2cc45 100644 --- a/arch/powerpc/platforms/powernv/memtrace.c +++ b/arch/powerpc/platforms/powernv/memtrace.c @@ -231,16 +231,10 @@ static int memtrace_online(void) continue; } - /* - * If kernel isn't compiled with the auto online option - * we need to online the memory ourselves. - */ - if (!memhp_auto_online) { - lock_device_hotplug(); - walk_memory_blocks(ent->start, ent->size, NULL, - online_mem_block); - unlock_device_hotplug(); - } + lock_device_hotplug(); + walk_memory_blocks(ent->start, ent->size, NULL, + online_mem_block); + unlock_device_hotplug(); /* * Memory was added successfully so clean up references to it diff --git a/arch/sh/kernel/syscalls/syscallhdr.sh b/arch/sh/kernel/syscalls/syscallhdr.sh index 1de0334e577f..4c0519861e97 100644 --- a/arch/sh/kernel/syscalls/syscallhdr.sh +++ b/arch/sh/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c index 13ee4d20e622..5f23d7907597 100644 --- a/arch/sh/mm/fault.c +++ b/arch/sh/mm/fault.c @@ -355,7 +355,7 @@ static inline int access_error(int error_code, struct vm_area_struct *vma) return 1; /* read, not present: */ - if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))) + if (unlikely(!vma_is_accessible(vma))) return 1; return 0; diff --git a/arch/sparc/kernel/syscalls/syscallhdr.sh b/arch/sparc/kernel/syscalls/syscallhdr.sh index 626b5740a9f1..cf50a75cc0bb 100644 --- a/arch/sparc/kernel/syscalls/syscallhdr.sh +++ b/arch/sparc/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" diff --git a/arch/sparc/vdso/vdso32/vclock_gettime.c b/arch/sparc/vdso/vdso32/vclock_gettime.c index 026abb3b826c..d7f99e6745ea 100644 --- a/arch/sparc/vdso/vdso32/vclock_gettime.c +++ b/arch/sparc/vdso/vdso32/vclock_gettime.c @@ -4,10 +4,6 @@ #define BUILD_VDSO32 -#ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE -#undef CONFIG_OPTIMIZE_INLINING -#endif - #ifdef CONFIG_SPARC64 /* diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 1edf788d301c..8d078642b4be 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -149,6 +149,7 @@ config X86 select HAVE_ARCH_TRACEHOOK select HAVE_ARCH_TRANSPARENT_HUGEPAGE select HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD if X86_64 + select HAVE_ARCH_USERFAULTFD_WP if USERFAULTFD select HAVE_ARCH_VMAP_STACK if X86_64 select HAVE_ARCH_WITHIN_STACK_FRAMES select HAVE_ASM_MODVERSIONS diff --git a/arch/x86/configs/i386_defconfig b/arch/x86/configs/i386_defconfig index ab8b30cb978e..550904591e94 100644 --- a/arch/x86/configs/i386_defconfig +++ b/arch/x86/configs/i386_defconfig @@ -285,7 +285,6 @@ CONFIG_EARLY_PRINTK_DBGP=y CONFIG_DEBUG_STACKOVERFLOW=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_DEBUG_BOOT_PARAMS=y -CONFIG_OPTIMIZE_INLINING=y CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y CONFIG_SECURITY_SELINUX=y diff --git a/arch/x86/configs/x86_64_defconfig b/arch/x86/configs/x86_64_defconfig index 2d196cb49084..614961009075 100644 --- a/arch/x86/configs/x86_64_defconfig +++ b/arch/x86/configs/x86_64_defconfig @@ -282,7 +282,6 @@ CONFIG_EARLY_PRINTK_DBGP=y CONFIG_DEBUG_STACKOVERFLOW=y # CONFIG_DEBUG_RODATA_TEST is not set CONFIG_DEBUG_BOOT_PARAMS=y -CONFIG_OPTIMIZE_INLINING=y CONFIG_UNWINDER_ORC=y CONFIG_SECURITY=y CONFIG_SECURITY_NETWORK=y diff --git a/arch/x86/entry/vdso/vdso32/vclock_gettime.c b/arch/x86/entry/vdso/vdso32/vclock_gettime.c index 1e82bd43286c..84a4a73f77f7 100644 --- a/arch/x86/entry/vdso/vdso32/vclock_gettime.c +++ b/arch/x86/entry/vdso/vdso32/vclock_gettime.c @@ -1,10 +1,6 @@ // SPDX-License-Identifier: GPL-2.0 #define BUILD_VDSO32 -#ifndef CONFIG_CC_OPTIMIZE_FOR_SIZE -#undef CONFIG_OPTIMIZE_INLINING -#endif - #ifdef CONFIG_X86_64 /* diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h index afda66a6d325..28838d790191 100644 --- a/arch/x86/include/asm/pgtable.h +++ b/arch/x86/include/asm/pgtable.h @@ -25,6 +25,7 @@ #include <asm/x86_init.h> #include <asm/fpu/xstate.h> #include <asm/fpu/api.h> +#include <asm-generic/pgtable_uffd.h> extern pgd_t early_top_pgt[PTRS_PER_PGD]; int __init __early_make_pgtable(unsigned long address, pmdval_t pmd); @@ -313,6 +314,23 @@ static inline pte_t pte_clear_flags(pte_t pte, pteval_t clear) return native_make_pte(v & ~clear); } +#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP +static inline int pte_uffd_wp(pte_t pte) +{ + return pte_flags(pte) & _PAGE_UFFD_WP; +} + +static inline pte_t pte_mkuffd_wp(pte_t pte) +{ + return pte_set_flags(pte, _PAGE_UFFD_WP); +} + +static inline pte_t pte_clear_uffd_wp(pte_t pte) +{ + return pte_clear_flags(pte, _PAGE_UFFD_WP); +} +#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ + static inline pte_t pte_mkclean(pte_t pte) { return pte_clear_flags(pte, _PAGE_DIRTY); @@ -392,6 +410,23 @@ static inline pmd_t pmd_clear_flags(pmd_t pmd, pmdval_t clear) return native_make_pmd(v & ~clear); } +#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP +static inline int pmd_uffd_wp(pmd_t pmd) +{ + return pmd_flags(pmd) & _PAGE_UFFD_WP; +} + +static inline pmd_t pmd_mkuffd_wp(pmd_t pmd) +{ + return pmd_set_flags(pmd, _PAGE_UFFD_WP); +} + +static inline pmd_t pmd_clear_uffd_wp(pmd_t pmd) +{ + return pmd_clear_flags(pmd, _PAGE_UFFD_WP); +} +#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ + static inline pmd_t pmd_mkold(pmd_t pmd) { return pmd_clear_flags(pmd, _PAGE_ACCESSED); @@ -1374,6 +1409,38 @@ static inline pmd_t pmd_swp_clear_soft_dirty(pmd_t pmd) #endif #endif +#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP +static inline pte_t pte_swp_mkuffd_wp(pte_t pte) +{ + return pte_set_flags(pte, _PAGE_SWP_UFFD_WP); +} + +static inline int pte_swp_uffd_wp(pte_t pte) +{ + return pte_flags(pte) & _PAGE_SWP_UFFD_WP; +} + +static inline pte_t pte_swp_clear_uffd_wp(pte_t pte) +{ + return pte_clear_flags(pte, _PAGE_SWP_UFFD_WP); +} + +static inline pmd_t pmd_swp_mkuffd_wp(pmd_t pmd) +{ + return pmd_set_flags(pmd, _PAGE_SWP_UFFD_WP); +} + +static inline int pmd_swp_uffd_wp(pmd_t pmd) +{ + return pmd_flags(pmd) & _PAGE_SWP_UFFD_WP; +} + +static inline pmd_t pmd_swp_clear_uffd_wp(pmd_t pmd) +{ + return pmd_clear_flags(pmd, _PAGE_SWP_UFFD_WP); +} +#endif /* CONFIG_HAVE_ARCH_USERFAULTFD_WP */ + #define PKRU_AD_BIT 0x1 #define PKRU_WD_BIT 0x2 #define PKRU_BITS_PER_PKEY 2 diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h index 0b6c4042942a..df1373415f11 100644 --- a/arch/x86/include/asm/pgtable_64.h +++ b/arch/x86/include/asm/pgtable_64.h @@ -189,7 +189,7 @@ extern void sync_global_pgds(unsigned long start, unsigned long end); * * | ... | 11| 10| 9|8|7|6|5| 4| 3|2| 1|0| <- bit number * | ... |SW3|SW2|SW1|G|L|D|A|CD|WT|U| W|P| <- bit names - * | TYPE (59-63) | ~OFFSET (9-58) |0|0|X|X| X| X|X|SD|0| <- swp entry + * | TYPE (59-63) | ~OFFSET (9-58) |0|0|X|X| X| X|F|SD|0| <- swp entry * * G (8) is aliased and used as a PROT_NONE indicator for * !present ptes. We need to start storing swap entries above @@ -197,9 +197,15 @@ extern void sync_global_pgds(unsigned long start, unsigned long end); * erratum where they can be incorrectly set by hardware on * non-present PTEs. * + * SD Bits 1-4 are not used in non-present format and available for + * special use described below: + * * SD (1) in swp entry is used to store soft dirty bit, which helps us * remember soft dirty over page migration * + * F (2) in swp entry is used to record when a pagetable is + * writeprotected by userfaultfd WP support. + * * Bit 7 in swp entry should be 0 because pmd_present checks not only P, * but also L and G. * diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h index 65c2ecd730c5..b6606fe6cfdf 100644 --- a/arch/x86/include/asm/pgtable_types.h +++ b/arch/x86/include/asm/pgtable_types.h @@ -32,6 +32,7 @@ #define _PAGE_BIT_SPECIAL _PAGE_BIT_SOFTW1 #define _PAGE_BIT_CPA_TEST _PAGE_BIT_SOFTW1 +#define _PAGE_BIT_UFFD_WP _PAGE_BIT_SOFTW2 /* userfaultfd wrprotected */ #define _PAGE_BIT_SOFT_DIRTY _PAGE_BIT_SOFTW3 /* software dirty tracking */ #define _PAGE_BIT_DEVMAP _PAGE_BIT_SOFTW4 @@ -100,6 +101,14 @@ #define _PAGE_SWP_SOFT_DIRTY (_AT(pteval_t, 0)) #endif +#ifdef CONFIG_HAVE_ARCH_USERFAULTFD_WP +#define _PAGE_UFFD_WP (_AT(pteval_t, 1) << _PAGE_BIT_UFFD_WP) +#define _PAGE_SWP_UFFD_WP _PAGE_USER +#else +#define _PAGE_UFFD_WP (_AT(pteval_t, 0)) +#define _PAGE_SWP_UFFD_WP (_AT(pteval_t, 0)) +#endif + #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX) #define _PAGE_DEVMAP (_AT(u64, 1) << _PAGE_BIT_DEVMAP) @@ -118,7 +127,8 @@ */ #define _PAGE_CHG_MASK (PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT | \ _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY | \ - _PAGE_SOFT_DIRTY | _PAGE_DEVMAP | _PAGE_ENC) + _PAGE_SOFT_DIRTY | _PAGE_DEVMAP | _PAGE_ENC | \ + _PAGE_UFFD_WP) #define _HPAGE_CHG_MASK (_PAGE_CHG_MASK | _PAGE_PSE) /* diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 859519f5b342..a51df516b87b 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -1222,7 +1222,7 @@ access_error(unsigned long error_code, struct vm_area_struct *vma) return 1; /* read, not present: */ - if (unlikely(!(vma->vm_flags & (VM_READ | VM_EXEC | VM_WRITE)))) + if (unlikely(!vma_is_accessible(vma))) return 1; return 0; diff --git a/arch/xtensa/kernel/syscalls/syscallhdr.sh b/arch/xtensa/kernel/syscalls/syscallhdr.sh index d37db641ca31..eebfb8a8ace6 100644 --- a/arch/xtensa/kernel/syscalls/syscallhdr.sh +++ b/arch/xtensa/kernel/syscalls/syscallhdr.sh @@ -32,5 +32,5 @@ grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | ( printf "#define __NR_syscalls\t%s\n" "${nxt}" printf "#endif\n" printf "\n" - printf "#endif /* %s */" "${fileguard}" + printf "#endif /* %s */\n" "${fileguard}" ) > "$out" |