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authorIngo Molnar <mingo@kernel.org>2017-10-23 13:30:47 +0200
committerIngo Molnar <mingo@kernel.org>2017-10-23 13:30:47 +0200
commitf95b23a112f1a31ea042483540cd907b58d23a5f (patch)
tree3d41d2f8cf1d66ed593deb12f25a30d2905eb077 /arch/x86/entry/entry_32.S
parentx86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt() (diff)
parentx86/unwind: Show function name+offset in ORC error messages (diff)
downloadlinux-f95b23a112f1a31ea042483540cd907b58d23a5f.tar.xz
linux-f95b23a112f1a31ea042483540cd907b58d23a5f.zip
Merge branch 'x86/urgent' into x86/asm, to pick up dependent fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/entry/entry_32.S')
-rw-r--r--arch/x86/entry/entry_32.S4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 8a13d468635a..50e0d2bc4528 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -176,7 +176,7 @@
/*
* This is a sneaky trick to help the unwinder find pt_regs on the stack. The
* frame pointer is replaced with an encoded pointer to pt_regs. The encoding
- * is just setting the LSB, which makes it an invalid stack address and is also
+ * is just clearing the MSB, which makes it an invalid stack address and is also
* a signal to the unwinder that it's a pt_regs pointer in disguise.
*
* NOTE: This macro must be used *after* SAVE_ALL because it corrupts the
@@ -185,7 +185,7 @@
.macro ENCODE_FRAME_POINTER
#ifdef CONFIG_FRAME_POINTER
mov %esp, %ebp
- orl $0x1, %ebp
+ andl $0x7fffffff, %ebp
#endif
.endm