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authorAvi Kivity <avi@redhat.com>2010-05-06 11:45:46 +0300
committerH. Peter Anvin <hpa@zytor.com>2010-05-10 10:48:55 -0700
commit86603283326c9e95e5ad4e9fdddeec93cac5d9ad (patch)
tree1a26a37434e920f9519b547814a1a9af35022de8 /arch/x86/math-emu
parentc9ad488289144ae5ef53b012e15895ef1f5e4bb6 (diff)
downloadop-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/math-emu')
-rw-r--r--arch/x86/math-emu/fpu_aux.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/math-emu/fpu_aux.c b/arch/x86/math-emu/fpu_aux.c
index aa09870..62797f9 100644
--- a/arch/x86/math-emu/fpu_aux.c
+++ b/arch/x86/math-emu/fpu_aux.c
@@ -30,10 +30,10 @@ static void fclex(void)
}
/* Needs to be externally visible */
-void finit_task(struct task_struct *tsk)
+void finit_soft_fpu(struct i387_soft_struct *soft)
{
- struct i387_soft_struct *soft = &tsk->thread.xstate->soft;
struct address *oaddr, *iaddr;
+ memset(soft, 0, sizeof(*soft));
soft->cwd = 0x037f;
soft->swd = 0;
soft->ftop = 0; /* We don't keep top in the status word internally. */
@@ -52,7 +52,7 @@ void finit_task(struct task_struct *tsk)
void finit(void)
{
- finit_task(current);
+ finit_task(&current->thread.fpu);
}
/*
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