Commit-ID: def3c5d0a34e4b09b3cea4435c17209ad347104d
Gitweb: http://git.kernel.org/tip/def3c5d0a34e4b09b3cea4435c17209ad347104d
Author: H. Peter Anvin <hpa@xxxxxxxxx>
AuthorDate: Mon, 12 Oct 2009 14:09:07 -0700
Committer: H. Peter Anvin <hpa@xxxxxxxxx>
CommitDate: Mon, 12 Oct 2009 14:19:34 -0700
x86: use kernel_stack_pointer() in process_32.c
The way to obtain a kernel-mode stack pointer from a struct pt_regs in
32-bit mode is "subtle": the stack doesn't actually contain the stack
pointer, but rather the location where it would have been marks the
actual previous stack frame. For clarity, use kernel_stack_pointer()
instead of coding this weirdness explicitly.
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxx>
---
arch/x86/kernel/process_32.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index 4cf7956..35e6fad 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -134,7 +134,7 @@ void __show_regs(struct pt_regs *regs, int all)
ss = regs->ss & 0xffff;
gs = get_user_gs(regs);
} else {
- sp = (unsigned long) (®s->sp);
+ sp = kernel_stack_pointer(regs);
savesegment(ss, ss);
savesegment(gs, gs);
}
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|