traps: x86_64: add TRACE_IRQS_OFF in error_entry

Add TRACE_IRQS_OFF just before entering the C code.

All exceptions are taken via interrupt gates. If irq tracing is
enabled, it should be notified as soon as possible. Interrupts
are only (conditionally) re-enabled in C code.

Signed-off-by: Alexander van Heukelum <heukelum@fastmail.fm>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index 25bb3f9..963b35b 100644 (file)
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1065,7 +1065,8 @@ KPROBE_ENTRY(error_entry)
        je  error_kernelspace
 error_swapgs:  
        SWAPGS
-error_sti:     
+error_sti:
+       TRACE_IRQS_OFF
        movq %rdi,RDI(%rsp)     
        CFI_REL_OFFSET  rdi,RDI
        movq %rsp,%rdi