| commit | e0d22d03c06c4e2c194d7010bc1e4a972199f156 | |
| author | Krzysztof Helt <krzysztof.h1@wp.pl> | |
| Thu, 31 Jul 2008 21:43:44 +0000 (31 23:43 +0200) | ||
| committer | Ingo Molnar <mingo@elte.hu> | |
| Thu, 31 Jul 2008 21:56:27 +0000 (31 23:56 +0200) | ||
| tree | 414e81fefd2c44dfbee7509d54aa372845949013 | treesnapshot (tar.gz zip) |
| parent | 8978b74253280d59e97cf49a3ec2c0cbccd5b801 | commitdiff |
x86: fdiv bug detection fix
The fdiv detection code writes s32 integer into
the boot_cpu_data.fdiv_bug.
However, the boot_cpu_data.fdiv_bug is only char (s8)
field so the detection overwrites already set fields for
other bugs, e.g. the f00f bug field.
Use local s32 variable to receive result.
This is a partial fix to Bugzilla #9928 - fixes wrong
information about the f00f bug (tested) and probably
for coma bug (I have no cpu to test this).
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The fdiv detection code writes s32 integer into
the boot_cpu_data.fdiv_bug.
However, the boot_cpu_data.fdiv_bug is only char (s8)
field so the detection overwrites already set fields for
other bugs, e.g. the f00f bug field.
Use local s32 variable to receive result.
This is a partial fix to Bugzilla #9928 - fixes wrong
information about the f00f bug (tested) and probably
for coma bug (I have no cpu to test this).
Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| arch/x86/kernel/cpu/bugs.c | diffblobblamehistory |