diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:47:50 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:47:50 +0000 |
| commit | 7c0639a3af697d4ae7a5db4d2ecc09eed43cad35 (patch) | |
| tree | b28a6eef28064256422bed5e477ee51f2cbb0c0b /arch/x86/include/asm/vsyscall.h | |
| parent | Adding debian version 6.7.9-2. (diff) | |
| download | linux-7c0639a3af697d4ae7a5db4d2ecc09eed43cad35.tar.xz linux-7c0639a3af697d4ae7a5db4d2ecc09eed43cad35.zip | |
Merging upstream version 6.7.12.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/x86/include/asm/vsyscall.h')
| -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 ab60a71a8d..472f0263db 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 */ |