3 Commits

Author	SHA1	Message	Date
Andreas Schwab	05d77ac90c	powerpc: Remove fpscr use from [kvm_]cvt_{fd,df} ... Neither lfs nor stfs touch the fpscr, so remove the restore/save of it around them. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>	2010-09-02 14:07:32 +10:00
Andreas Schwab	49f6be8ea1	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>	2010-08-01 10:39:24 +03:00
Alexander Graf	963cf3dc63	KVM: PPC: Add helpers to call FPU instructions ... To emulate paired single instructions, we need to be able to call FPU operations from within the kernel. Since we don't want gcc to spill arbitrary FPU code everywhere, we tell it to use a soft fpu. Since we know we can really call the FPU in safe areas, let's also add some calls that we can later use to actually execute real world FPU operations on the host's FPU. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Avi Kivity <avi@redhat.com>	2010-04-25 12:35:15 +03:00