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| author | Dave Hansen <dave.hansen@linux.intel.com> | 2015-09-02 16:31:31 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-09-14 12:22:02 +0200 |
| commit | ef78f2a4bf84d8db9f36868decca2dc24e02a6af (patch) | |
| tree | 42fa0670920bba069749cef56d1b5b239fcc8fad /arch/x86/kvm | |
| parent | e6e888f96b4a531886f3bf29ba9af0b6f1026365 (diff) | |
| download | op-kernel-dev-ef78f2a4bf84d8db9f36868decca2dc24e02a6af.zip op-kernel-dev-ef78f2a4bf84d8db9f36868decca2dc24e02a6af.tar.gz | |
x86/fpu: Check CPU-provided sizes against struct declarations
We now have C structures defined for each of the XSAVE state
components that we support. This patch adds checks during our
verification pass to ensure that the CPU-provided data
enumerated in CPUID leaves matches our C structures.
If not, we warn and dump all the XSAVE CPUID leaves.
Note: this *actually* found an inconsistency with the MPX
'bndcsr' state. The hardware pads it out differently from
our C structures. This patch caught it and warned.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: dave@sr71.net
Cc: linux-kernel@vger.kernel.org
Link: http://lkml.kernel.org/r/20150902233131.A8DB36DA@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kvm')
0 files changed, 0 insertions, 0 deletions
