x86, microcode: Update BSPs microcode on resume
authorBorislav Petkov <bp@suse.de>
Tue, 18 Nov 2014 09:46:57 +0000 (10:46 +0100)
committerThomas Gleixner <tglx@linutronix.de>
Tue, 18 Nov 2014 17:32:24 +0000 (18:32 +0100)
commitfb86b97300d930b57471068720c52bfa8622eab7
treee564169a28aa0daac10a4d80a3e8ea9d6dd1be6c
parent2cd3949f702692cf4c5d05b463f19cd706a92dd3
x86, microcode: Update BSPs microcode on resume

In the situation when we apply early microcode but do *not* apply late
microcode, we fail to update the BSP's microcode on resume because we
haven't initialized the uci->mc microcode pointer. So, in order to
alleviate that, we go and dig out the stashed microcode patch during
early boot. It is basically the same thing that is done on the APs early
during boot so do that too here.

Tested-by: alex.schnaidt@gmail.com
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=88001
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: <stable@vger.kernel.org> # v3.9
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/20141118094657.GA6635@pd.tnic
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/cpu/microcode/core.c