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>
diff --git a/arch/powerpc/kvm/fpu.S b/arch/powerpc/kvm/fpu.S
index 2b340a3..cb34bbe 100644
--- a/arch/powerpc/kvm/fpu.S
+++ b/arch/powerpc/kvm/fpu.S
@@ -271,3 +271,21 @@
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