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| author | Xin Li <xin3.li@intel.com> | 2023-12-05 02:50:16 -0800 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2024-01-31 22:02:36 +0100 |
| commit | 8f4a29b0e8a40d865040800684d7ff4141c1394f (patch) | |
| tree | 1b46363c8f5cdae85a010cb946586ef821cd73f0 /arch/x86/include/asm/idtentry.h | |
| parent | 14619d912b658ecd9573fb88400d3830a29cadcb (diff) | |
| download | linux-stable-8f4a29b0e8a40d865040800684d7ff4141c1394f.tar.gz linux-stable-8f4a29b0e8a40d865040800684d7ff4141c1394f.tar.bz2 linux-stable-8f4a29b0e8a40d865040800684d7ff4141c1394f.zip | |
x86/traps: Add sysvec_install() to install a system interrupt handler
Add sysvec_install() to install a system interrupt handler into the IDT
or the FRED system interrupt handler table.
Signed-off-by: Xin Li <xin3.li@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Tested-by: Shan Kang <shan.kang@intel.com>
Link: https://lore.kernel.org/r/20231205105030.8698-28-xin3.li@intel.com
Diffstat (limited to 'arch/x86/include/asm/idtentry.h')
| -rw-r--r-- | arch/x86/include/asm/idtentry.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/include/asm/idtentry.h b/arch/x86/include/asm/idtentry.h index 570f286ca7dd..47d4c04d103d 100644 --- a/arch/x86/include/asm/idtentry.h +++ b/arch/x86/include/asm/idtentry.h @@ -459,6 +459,21 @@ __visible noinstr void func(struct pt_regs *regs, \ #define DEFINE_FREDENTRY_DEBUG DEFINE_FREDENTRY_RAW #endif +void idt_install_sysvec(unsigned int n, const void *function); + +#ifdef CONFIG_X86_FRED +void fred_install_sysvec(unsigned int vector, const idtentry_t function); +#else +static inline void fred_install_sysvec(unsigned int vector, const idtentry_t function) { } +#endif + +#define sysvec_install(vector, function) { \ + if (cpu_feature_enabled(X86_FEATURE_FRED)) \ + fred_install_sysvec(vector, function); \ + else \ + idt_install_sysvec(vector, asm_##function); \ +} + #else /* !__ASSEMBLY__ */ /* |