diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2020-02-26 01:33:25 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-06-11 16:14:58 +0300 |
| commit | 6271fef00b3489690e52ce95edbc378357513547 (patch) | |
| tree | dafbe2b0d1b80557211c6f220390646ba9974763 /arch/x86/entry/entry_64.S | |
| parent | 9cce81cff748ef0e79b41c6e37d7137267f1212f (diff) | |
| download | linux-6271fef00b3489690e52ce95edbc378357513547.tar.xz | |
x86/entry: Convert NMI to IDTENTRY_NMI
Convert #NMI to IDTENTRY_NMI:
- Implement the C entry point with DEFINE_IDTENTRY_NMI
- Fixup the XEN/PV code
- Remove the old prototypes
No functional change.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Andy Lutomirski <luto@kernel.org>
Link: https://lkml.kernel.org/r/20200505135314.609932306@linutronix.de
Diffstat (limited to 'arch/x86/entry/entry_64.S')
| -rw-r--r-- | arch/x86/entry/entry_64.S | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index 5007b975ca7c..3d7f2cc29be3 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -1079,7 +1079,6 @@ idtentry_df X86_TRAP_DF double_fault do_double_fault #ifdef CONFIG_XEN_PV idtentry 512 /* dummy */ hypervisor_callback xen_do_hypervisor_callback has_error_code=0 -idtentry X86_TRAP_NMI xennmi do_nmi has_error_code=0 idtentry X86_TRAP_DB xendebug do_debug has_error_code=0 #endif @@ -1414,7 +1413,7 @@ SYM_CODE_END(error_return) * %r14: Used to save/restore the CR3 of the interrupted context * when PAGE_TABLE_ISOLATION is in use. Do not clobber. */ -SYM_CODE_START(nmi) +SYM_CODE_START(asm_exc_nmi) UNWIND_HINT_IRET_REGS /* @@ -1499,7 +1498,7 @@ SYM_CODE_START(nmi) movq %rsp, %rdi movq $-1, %rsi - call do_nmi + call exc_nmi /* * Return back to user mode. We must *not* do the normal exit @@ -1556,7 +1555,7 @@ SYM_CODE_START(nmi) * end_repeat_nmi, then we are a nested NMI. We must not * modify the "iret" frame because it's being written by * the outer NMI. That's okay; the outer NMI handler is - * about to about to call do_nmi anyway, so we can just + * about to about to call exc_nmi() anyway, so we can just * resume the outer NMI. */ @@ -1675,7 +1674,7 @@ repeat_nmi: * RSP is pointing to "outermost RIP". gsbase is unknown, but, if * we're repeating an NMI, gsbase has the same value that it had on * the first iteration. paranoid_entry will load the kernel - * gsbase if needed before we call do_nmi. "NMI executing" + * gsbase if needed before we call exc_nmi(). "NMI executing" * is zero. */ movq $1, 10*8(%rsp) /* Set "NMI executing". */ @@ -1709,10 +1708,10 @@ end_repeat_nmi: call paranoid_entry UNWIND_HINT_REGS - /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */ + /* paranoidentry exc_nmi(), 0; without TRACE_IRQS_OFF */ movq %rsp, %rdi movq $-1, %rsi - call do_nmi + call exc_nmi /* Always restore stashed CR3 value (see paranoid_entry) */ RESTORE_CR3 scratch_reg=%r15 save_reg=%r14 @@ -1749,7 +1748,7 @@ nmi_restore: * about espfix64 on the way back to kernel mode. */ iretq -SYM_CODE_END(nmi) +SYM_CODE_END(asm_exc_nmi) #ifndef CONFIG_IA32_EMULATION /* |