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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:15:43 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:15:43 +0000 |
| commit | 4a1c948bc688e5ab5e51d12d2f6dd6746e3ac2d9 (patch) | |
| tree | 7ee50e6ccf13f75f02fd343cf90750cbd9950194 /arch/x86/include/asm/vsyscall.h | |
| parent | Releasing progress-linux version 6.1.82-1~progress6.99u1. (diff) | |
| download | linux-4a1c948bc688e5ab5e51d12d2f6dd6746e3ac2d9.tar.xz linux-4a1c948bc688e5ab5e51d12d2f6dd6746e3ac2d9.zip | |
Merging upstream version 6.1.85.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/include/asm/vsyscall.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vsyscall.h b/arch/x86/include/asm/vsyscall.h index ab60a71a8..472f0263d 100644 --- a/arch/x86/include/asm/vsyscall.h +++ b/arch/x86/include/asm/vsyscall.h @@ -4,6 +4,7 @@ #include <linux/seqlock.h> #include <uapi/asm/vsyscall.h> +#include <asm/page_types.h> #ifdef CONFIG_X86_VSYSCALL_EMULATION extern void map_vsyscall(void); @@ -24,4 +25,13 @@ static inline bool emulate_vsyscall(unsigned long error_code, } #endif +/* + * The (legacy) vsyscall page is the long page in the kernel portion + * of the address space that has user-accessible permissions. + */ +static inline bool is_vsyscall_vaddr(unsigned long vaddr) +{ + return unlikely((vaddr & PAGE_MASK) == VSYSCALL_ADDR); +} + #endif /* _ASM_X86_VSYSCALL_H */ |