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| author | Peter Zijlstra <[email protected]> | 2019-09-03 13:43:24 +0200 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2019-11-27 07:44:24 +0100 |
| commit | 8f4a4160c618434e76f7d68673a6be50fac0549a (patch) | |
| tree | 2287e04025d6ab7576bf649c67ef3c12fd3797b2 | |
| parent | c2da5bdc66a377f0b82ee959f19f5a6774706b83 (diff) | |
x86/alternatives: Update int3_emulate_push() comment
Update the comment now that we've merged x86_32 support.
Tested-by: Alexei Starovoitov <[email protected]>
Tested-by: Steven Rostedt (VMware) <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Alexei Starovoitov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | arch/x86/include/asm/text-patching.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h index 23c626a742e8..ea91049058d8 100644 --- a/arch/x86/include/asm/text-patching.h +++ b/arch/x86/include/asm/text-patching.h @@ -85,6 +85,9 @@ static inline void int3_emulate_push(struct pt_regs *regs, unsigned long val) * stack where the break point happened, and the saving of * pt_regs. We can extend the original stack because of * this gap. See the idtentry macro's create_gap option. + * + * Similarly entry_32.S will have a gap on the stack for (any) hardware + * exception and pt_regs; see FIXUP_FRAME. */ regs->sp -= sizeof(unsigned long); *(unsigned long *)regs->sp = val; |