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| author | Emanuel Czirai <icanrealizeum@gmail.com> | 2016-09-02 07:35:50 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-11-20 01:17:22 +0000 |
| commit | b9ebc787dab1c61a3241f91dd3612616974e7430 (patch) | |
| tree | afec61358b2b0f1286182b26b9f9ee963abbd1f7 /include/linux/writeback.h | |
| parent | 469b49979bed4a1be17faa8a513c990e076877c5 (diff) | |
x86/AMD: Apply erratum 665 on machines without a BIOS fix
commit d1992996753132e2dafe955cccb2fb0714d3cfc4 upstream.
AMD F12h machines have an erratum which can cause DIV/IDIV to behave
unpredictably. The workaround is to set MSRC001_1029[31] but sometimes
there is no BIOS update containing that workaround so let's do it
ourselves unconditionally. It is simple enough.
[ Borislav: Wrote commit message. ]
Signed-off-by: Emanuel Czirai <icanrealizeum@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Yaowu Xu <yaowu@google.com>
Link: http://lkml.kernel.org/r/20160902053550.18097-1-bp@alien8.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[bwh: Backported to 3.16:
- Add an if-statement to init_amd() in place of the switch
- Adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'include/linux/writeback.h')
0 files changed, 0 insertions, 0 deletions