diff options
Diffstat (limited to 'arch/x86/entry/entry_64.S')
| -rw-r--r-- | arch/x86/entry/entry_64.S | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index e7434cda9a38..9162a073e524 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -528,6 +528,20 @@ SYM_CODE_END(\asmsym) .endm /* + * Interrupt entry/exit. + * + + The interrupt stubs push (vector) onto the stack, which is the error_code + * position of idtentry exceptions, and jump to one of the two idtentry points + * (common/spurious). + * + * common_interrupt is a hotpath, align it to a cache line + */ +.macro idtentry_irq vector cfunc + .p2align CONFIG_X86_L1_CACHE_SHIFT + idtentry \vector asm_\cfunc \cfunc has_error_code=1 +.endm + +/* * MCE and DB exceptions */ #define CPU_TSS_IST(x) PER_CPU_VAR(cpu_tss_rw) + (TSS_ist + (x) * 8) |