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| author | H. Peter Anvin | 2009-05-07 02:56:51 +0200 |
|---|---|---|
| committer | H. Peter Anvin | 2009-05-09 02:19:01 +0200 |
| commit | 97541912785369925723b6255438ad9fce2ddf04 (patch) | |
| tree | 5c9e5cce0f174877046997fad05253d55b1d8532 /arch | |
| parent | x86, boot: set up the decompression stack as early as possible (diff) | |
| download | kernel-qcow2-linux-97541912785369925723b6255438ad9fce2ddf04.tar.gz kernel-qcow2-linux-97541912785369925723b6255438ad9fce2ddf04.tar.xz kernel-qcow2-linux-97541912785369925723b6255438ad9fce2ddf04.zip | |
x86, boot: zero EFLAGS on 32 bits
The 64-bit code already clears EFLAGS as soon as it has a stack. This
seems like a reasonable precaution, so do it on 32 bits as well.
[ Impact: extra paranoia ]
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/boot/compressed/head_32.S | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S index d7245cf80261..d02a4f02be13 100644 --- a/arch/x86/boot/compressed/head_32.S +++ b/arch/x86/boot/compressed/head_32.S @@ -91,6 +91,10 @@ ENTRY(startup_32) /* Set up the stack */ leal boot_stack_end(%ebx), %esp + /* Zero EFLAGS */ + pushl $0 + popfl + /* * Copy the compressed kernel to the end of our buffer * where decompression in place becomes safe. |