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authorScott Wood <scottwood@freescale.com>2011-06-15 03:34:31 +0400
committerAvi Kivity <avi@redhat.com>2011-07-12 14:16:32 +0400
commit4cd35f675ba41a99a477e28a6add4a66833325f2 (patch)
treed4b26dadccbad63b63ce90b358efa5903c4e075e /arch/powerpc/kernel
parentecee273fc48f7f48f0c2f074335c43aaa790c308 (diff)
downloadlinux-4cd35f675ba41a99a477e28a6add4a66833325f2.tar.xz
KVM: PPC: e500: Save/restore SPE state
This is done lazily. The SPE save will be done only if the guest has used SPE since the last preemption or heavyweight exit. Restore will be done only on demand, when enabling MSR_SPE in the shadow MSR, in response to an SPE fault or mtmsr emulation. For SPEFSCR, Linux already switches it on context switch (non-lazily), so the only remaining bit is to save it between qemu and the guest. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/asm-offsets.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/asm-offsets.c b/arch/powerpc/kernel/asm-offsets.c
index 25de8e4808a4..ecd2b3ad7ff6 100644
--- a/arch/powerpc/kernel/asm-offsets.c
+++ b/arch/powerpc/kernel/asm-offsets.c
@@ -497,6 +497,13 @@ int main(void)
DEFINE(TLBCAM_MAS7, offsetof(struct tlbcam, MAS7));
#endif
+#if defined(CONFIG_KVM) && defined(CONFIG_SPE)
+ DEFINE(VCPU_EVR, offsetof(struct kvm_vcpu, arch.evr[0]));
+ DEFINE(VCPU_ACC, offsetof(struct kvm_vcpu, arch.acc));
+ DEFINE(VCPU_SPEFSCR, offsetof(struct kvm_vcpu, arch.spefscr));
+ DEFINE(VCPU_HOST_SPEFSCR, offsetof(struct kvm_vcpu, arch.host_spefscr));
+#endif
+
#ifdef CONFIG_KVM_EXIT_TIMING
DEFINE(VCPU_TIMING_EXIT_TBU, offsetof(struct kvm_vcpu,
arch.timing_exit.tv32.tbu));