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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-07 11:56:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-12-07 11:56:34 -0800 |
| commit | f35e46631b28a63ca3887d7afef1a65a5544da52 (patch) | |
| tree | 1f6c6c694608e10220fa6e36a7d5b973cc6f3c9a /arch/x86/include/asm/ia32.h | |
| parent | 55b224d90d44d794c1afab046c4fd9dc8be9247d (diff) | |
| parent | f4116bfc44621882556bbf70f5284fbf429a5cf6 (diff) | |
Merge tag 'x86-int80-20231207' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 int80 fixes from Dave Hansen:
"Avoid VMM misuse of 'int 0x80' handling in TDX and SEV guests.
It also has the very nice side effect of getting rid of a bunch of
assembly entry code"
* tag 'x86-int80-20231207' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tdx: Allow 32-bit emulation by default
x86/entry: Do not allow external 0x80 interrupts
x86/entry: Convert INT 0x80 emulation to IDTENTRY
x86/coco: Disable 32-bit emulation by default on TDX and SEV
Diffstat (limited to 'arch/x86/include/asm/ia32.h')
| -rw-r--r-- | arch/x86/include/asm/ia32.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/x86/include/asm/ia32.h b/arch/x86/include/asm/ia32.h index 5a2ae24b1204..9805629479d9 100644 --- a/arch/x86/include/asm/ia32.h +++ b/arch/x86/include/asm/ia32.h @@ -75,6 +75,11 @@ static inline bool ia32_enabled(void) return __ia32_enabled; } +static inline void ia32_disable(void) +{ + __ia32_enabled = false; +} + #else /* !CONFIG_IA32_EMULATION */ static inline bool ia32_enabled(void) @@ -82,6 +87,8 @@ static inline bool ia32_enabled(void) return IS_ENABLED(CONFIG_X86_32); } +static inline void ia32_disable(void) {} + #endif #endif /* _ASM_X86_IA32_H */ |