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authorSuresh Siddha <suresh.b.siddha@intel.com>2009-04-11 00:21:24 +0200
committerIngo Molnar <mingo@elte.hu>2009-04-12 13:08:56 +0200
commita30469e7921a6dd2067e9e836d7787cfa0105627 (patch)
tree6a5418033c233648b436610a6f6730f37ba80144 /arch/x86/include/asm/sigcontext.h
parentx86: fix wrong section of pat_disable & make it static (diff)
downloadlinux-a30469e7921a6dd2067e9e836d7787cfa0105627.tar.xz
linux-a30469e7921a6dd2067e9e836d7787cfa0105627.zip
x86: add linux kernel support for YMM state
Impact: save/restore Intel-AVX state properly between tasks Intel Advanced Vector Extensions (AVX) introduce 256-bit vector processing capability. More about AVX at http://software.intel.com/sites/avx Add OS support for YMM state management using xsave/xrstor infrastructure to support AVX. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> LKML-Reference: <1239402084.27006.8057.camel@localhost.localdomain> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/include/asm/sigcontext.h')
-rw-r--r--arch/x86/include/asm/sigcontext.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/sigcontext.h b/arch/x86/include/asm/sigcontext.h
index ec666491aaa4..72e5a4491661 100644
--- a/arch/x86/include/asm/sigcontext.h
+++ b/arch/x86/include/asm/sigcontext.h
@@ -269,6 +269,11 @@ struct _xsave_hdr {
__u64 reserved2[5];
};
+struct _ymmh_state {
+ /* 16 * 16 bytes for each YMMH-reg */
+ __u32 ymmh_space[64];
+};
+
/*
* Extended state pointed by the fpstate pointer in the sigcontext.
* In addition to the fpstate, information encoded in the xstate_hdr
@@ -278,6 +283,7 @@ struct _xsave_hdr {
struct _xstate {
struct _fpstate fpstate;
struct _xsave_hdr xstate_hdr;
+ struct _ymmh_state ymmh;
/* new processor state extensions go here */
};