linux-kernel - Re: [GIT PULL] AMD microcode fixes for 3.11

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Date:	Wed, 14 Aug 2013 12:17:41 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Borislav Petkov <bp@...en8.de>
Cc:	x86-ml <x86@...nel.org>,
	Torsten Kaiser <just.for.lkml@...glemail.com>,
	Johannes Hirte <johannes.hirte@....tu-ilmenau.de>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] AMD microcode fixes for 3.11


* Borislav Petkov <bp@...en8.de> wrote:

> Hi guys,
> 
> the tag message should explain it all so please pull.
> 
> Thanks.
> 
> The following changes since commit d4e4ab86bcba5a72779c43dc1459f71fea3d89c8:
> 
>   Linux 3.11-rc5 (2013-08-11 18:04:20 -0700)
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git tags/amd_ucode_fixes
> 
> for you to fetch changes up to 84516098b58e05821780dc0b89abcee434b4dca5:
> 
>   x86, microcode, AMD: Fix early microcode loading (2013-08-12 18:32:45 +0200)
> 
> ----------------------------------------------------------------
> Those are basically two fixes which correct the AMD early ucode loader
> from accessing cpu_data too early, i.e. before smp_store_cpu_info()
> has copied the boot_cpu_data ontop and overwritten an already empty
> structure (which we shouldn't access that early in the first place
> anyway).
> 
> The second patch is kinda largish for that late in the game but it
> shouldn't be problematic because we're simply switching from using
> cpu_data to use the CPU family number directly and thus again, not use
> uninitialized cpu_data structure.
> 
> ----------------------------------------------------------------
> Torsten Kaiser (2):
>       x86, microcode, AMD: Make cpu_has_amd_erratum() use the correct struct cpuinfo_x86
>       x86, microcode, AMD: Fix early microcode loading
> 
>  arch/x86/include/asm/microcode_amd.h  |  2 +-
>  arch/x86/kernel/cpu/amd.c             | 20 +++++---------------
>  arch/x86/kernel/microcode_amd.c       | 27 +++++++++++++--------------
>  arch/x86/kernel/microcode_amd_early.c | 27 +++++++++++++--------------
>  4 files changed, 32 insertions(+), 44 deletions(-)

Pulled into x86/urgent, thanks Boris!

	Ingo
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