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| author | Andreas Schwab <schwab@linux-m68k.org> | 2010-05-31 21:59:13 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-08-01 09:39:24 +0200 |
| commit | 49f6be8ea1bd74713c1a48e42db06a3808dfa2cd (patch) | |
| tree | 5be35ebab7a049e9358a60b308df981b02f70f21 /arch/powerpc/kvm/fpu.S | |
| parent | KVM: VMX: Properly return error to userspace on vmentry failure (diff) | |
| download | linux-49f6be8ea1bd74713c1a48e42db06a3808dfa2cd.tar.xz linux-49f6be8ea1bd74713c1a48e42db06a3808dfa2cd.zip | |
KVM: PPC: elide struct thread_struct instances from stack
Instead of instantiating a whole thread_struct on the stack use only the
required parts of it.
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Tested-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/powerpc/kvm/fpu.S')
| -rw-r--r-- | arch/powerpc/kvm/fpu.S | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/fpu.S b/arch/powerpc/kvm/fpu.S index 2b340a3eee90..cb34bbe16113 100644 --- a/arch/powerpc/kvm/fpu.S +++ b/arch/powerpc/kvm/fpu.S @@ -271,3 +271,21 @@ FPD_THREE_IN(fmsub) FPD_THREE_IN(fmadd) FPD_THREE_IN(fnmsub) FPD_THREE_IN(fnmadd) + +_GLOBAL(kvm_cvt_fd) + lfd 0,0(r5) /* load up fpscr value */ + MTFSF_L(0) + lfs 0,0(r3) + stfd 0,0(r4) + mffs 0 + stfd 0,0(r5) /* save new fpscr value */ + blr + +_GLOBAL(kvm_cvt_df) + lfd 0,0(r5) /* load up fpscr value */ + MTFSF_L(0) + lfd 0,0(r3) + stfs 0,0(r4) + mffs 0 + stfd 0,0(r5) /* save new fpscr value */ + blr |