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authorSuresh Siddha <suresh.b.siddha@intel.com>2008-07-29 10:29:19 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-30 19:49:24 +0200
commitdc1e35c6e95e8923cf1d3510438b63c600fee1e2 (patch)
tree4348f51f1bfdd124efd6d16dcc552bd4a148fdfb /include/asm-x86/processor.h
parenta648bf4632628c787abb0514277f2a231fca39ca (diff)
x86, xsave: enable xsave/xrstor on cpus with xsave support
Enables xsave/xrstor by turning on cr4.osxsave on cpu's which have the xsave support. For now, features that OS supports/enabled are FP and SSE. Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/processor.h')
-rw-r--r--include/asm-x86/processor.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index d60b4d81feb..d7c0221c027 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -346,6 +346,18 @@ struct i387_soft_struct {
u32 entry_eip;
};
+struct xsave_hdr_struct {
+ u64 xstate_bv;
+ u64 reserved1[2];
+ u64 reserved2[5];
+} __attribute__((packed));
+
+struct xsave_struct {
+ struct i387_fxsave_struct i387;
+ struct xsave_hdr_struct xsave_hdr;
+ /* new processor state extensions will go here */
+} __attribute__ ((packed, aligned (64)));
+
union thread_xstate {
struct i387_fsave_struct fsave;
struct i387_fxsave_struct fxsave;