Pass PVR in sregs

Right now sregs is unused on PPC, so we can use it for initialization
of the CPU.

KVM on BookE always virtualizes the host CPU. On Book3s we go a step further
and take the PVR from userspace that tells us what kind of CPU we are supposed
to virtualize, because we support Book3s_32 and Book3s_64 guests.

In order to get that information, we use the sregs ioctl, because we don't
want to reset the guest CPU on every normal register set.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h
index bb2de6aa5ce0e59b1d7a851b385e563c1358619e..c9ca97f43bc1a55dbbfd3cf5d7f64bd64f884049 100644 (file)
--- a/arch/powerpc/include/asm/kvm.h
+++ b/arch/powerpc/include/asm/kvm.h
@@ -46,6 +46,8 @@ struct kvm_regs {
 };
 
 struct kvm_sregs {
+       __u32 pvr;
+       char pad[1020];
 };
 
 struct kvm_fpu {