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    Subject[PATCH 1/7] traps: x86_64: add TRACE_IRQS_OFF in error_entry
    Date
    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 <fastmail.fm>
    ---
    arch/x86/kernel/entry_64.S | 3 ++-
    1 files changed, 2 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
    index 89434d4..78fa552 100644
    --- a/arch/x86/kernel/entry_64.S
    +++ b/arch/x86/kernel/entry_64.S
    @@ -1058,7 +1058,8 @@ 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
    --
    1.5.4.3


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