| commit | ebba638ae723d8a8fc2f7abce5ec18b688b791d7 | |
| author | Kees Cook <kees.cook@canonical.com> | |
| Wed, 10 Nov 2010 18:35:53 +0000 (10 10:35 -0800) | ||
| committer | H. Peter Anvin <hpa@linux.intel.com> | |
| Wed, 10 Nov 2010 23:43:09 +0000 (10 15:43 -0800) | ||
| tree | 774eebadd4ca78e988e8ad029bca0d5e0e43f81c | treesnapshot (tar.gz zip) |
| parent | ae84739c27b6b3725993202fe02ff35ab86468e1 | commitdiff |
x86, cpu: Call verify_cpu during 32bit CPU startup
The XD_DISABLE-clearing side-effect needs to happen for both 32bit
and 64bit, but the 32bit init routines were not calling verify_cpu()
yet. This adds that call to gain the side-effect.
The longmode/SSE tests being performed in verify_cpu() need to happen very
early for 64bit but not for 32bit. Instead of including it in two places
for 32bit, we can just include it once in arch/x86/kernel/head_32.S.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
LKML-Reference: <1289414154-7829-4-git-send-email-kees.cook@canonical.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
The XD_DISABLE-clearing side-effect needs to happen for both 32bit
and 64bit, but the 32bit init routines were not calling verify_cpu()
yet. This adds that call to gain the side-effect.
The longmode/SSE tests being performed in verify_cpu() need to happen very
early for 64bit but not for 32bit. Instead of including it in two places
for 32bit, we can just include it once in arch/x86/kernel/head_32.S.
Signed-off-by: Kees Cook <kees.cook@canonical.com>
LKML-Reference: <1289414154-7829-4-git-send-email-kees.cook@canonical.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
| arch/x86/kernel/head_32.S | diffblobblamehistory | |
| arch/x86/kernel/verify_cpu.S | diffblobblamehistory |