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| author |   Dave Hansen <dave.hansen@linux.intel.com> | 2016-02-12 13:02:04 -0800 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2016-02-16 10:11:14 +0100 |
| commit | c8df40098451ba18a43f22b563c9129182353158 (patch) | |
| tree | 4fa573cf0a805d3837143f43a0c6ddb5ce75ef7f /arch/x86/include/asm/fpu/xstate.h | |
| parent | x86/cpu, x86/mm/pkeys: Define new CR4 bit (diff) | |
| download | linux-dev-c8df40098451ba18a43f22b563c9129182353158.tar.xz linux-dev-c8df40098451ba18a43f22b563c9129182353158.zip | |
x86/fpu, x86/mm/pkeys: Add PKRU xsave fields and data structures
The protection keys register (PKRU) is saved and restored using
xsave. Define the data structure that we will use to access it
inside the xsave buffer.
Note that we also have to widen the printk of the xsave feature
masks since this is feature 0x200 and we only did two characters
before.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20160212210204.56DF8F7B@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/fpu/xstate.h')
| -rw-r--r-- | arch/x86/include/asm/fpu/xstate.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/include/asm/fpu/xstate.h b/arch/x86/include/asm/fpu/xstate.h index af30fdeb140d..9994d4229002 100644 --- a/arch/x86/include/asm/fpu/xstate.h +++ b/arch/x86/include/asm/fpu/xstate.h @@ -28,7 +28,8 @@ XFEATURE_MASK_YMM | \ XFEATURE_MASK_OPMASK | \ XFEATURE_MASK_ZMM_Hi256 | \ - XFEATURE_MASK_Hi16_ZMM) + XFEATURE_MASK_Hi16_ZMM | \ + XFEATURE_MASK_PKRU) /* All currently supported features */ #define XCNTXT_MASK (XFEATURE_MASK_LAZY | XFEATURE_MASK_EAGER) |