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| author | Avi Kivity <avi@redhat.com> | 2010-05-06 11:45:46 +0300 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2010-05-10 10:48:55 -0700 |
| commit | 86603283326c9e95e5ad4e9fdddeec93cac5d9ad (patch) | |
| tree | 1a26a37434e920f9519b547814a1a9af35022de8 /arch/x86/include/asm/processor.h | |
| parent | c9ad488289144ae5ef53b012e15895ef1f5e4bb6 (diff) | |
| download | op-kernel-dev-86603283326c9e95e5ad4e9fdddeec93cac5d9ad.zip op-kernel-dev-86603283326c9e95e5ad4e9fdddeec93cac5d9ad.tar.gz | |
x86: Introduce 'struct fpu' and related API
Currently all fpu state access is through tsk->thread.xstate. Since we wish
to generalize fpu access to non-task contexts, wrap the state in a new
'struct fpu' and convert existing access to use an fpu API.
Signal frame handlers are not converted to the API since they will remain
task context only things.
Signed-off-by: Avi Kivity <avi@redhat.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <1273135546-29690-3-git-send-email-avi@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/processor.h')
| -rw-r--r-- | arch/x86/include/asm/processor.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index b753ea5..b684f58 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -380,6 +380,10 @@ union thread_xstate { struct xsave_struct xsave; }; +struct fpu { + union thread_xstate *state; +}; + #ifdef CONFIG_X86_64 DECLARE_PER_CPU(struct orig_ist, orig_ist); @@ -457,7 +461,7 @@ struct thread_struct { unsigned long trap_no; unsigned long error_code; /* floating point and extended processor state */ - union thread_xstate *xstate; + struct fpu fpu; #ifdef CONFIG_X86_32 /* Virtual 86 mode info */ struct vm86_struct __user *vm86_info; |
