summaryrefslogtreecommitdiff
path: root/arch/powerpc/include
diff options
context:
space:
mode:
authorSimon Guo <wei.guo.simon@gmail.com>2018-05-23 15:02:00 +0800
committerPaul Mackerras <paulus@ozlabs.org>2018-06-01 10:30:05 +1000
commit533082ae86e2f1ff6cb9eca7a25202a81fc0567e (patch)
tree73670cd71af29f9ead14ab83432eb64fbf3ca7c5 /arch/powerpc/include
parent13989b65ebb74c05c577dbbcc111e1fdd7da763a (diff)
downloadlinux-533082ae86e2f1ff6cb9eca7a25202a81fc0567e.tar.gz
KVM: PPC: Book3S PR: Emulate mtspr/mfspr using active TM SPRs
The mfspr/mtspr on TM SPRs(TEXASR/TFIAR/TFHAR) are non-privileged instructions and can be executed by PR KVM guest in problem state without trapping into the host. We only emulate mtspr/mfspr texasr/tfiar/tfhar in guest PR=0 state. When we are emulating mtspr tm sprs in guest PR=0 state, the emulation result needs to be visible to guest PR=1 state. That is, the actual TM SPR val should be loaded into actual registers. We already flush TM SPRs into vcpu when switching out of CPU, and load TM SPRs when switching back. This patch corrects mfspr()/mtspr() emulation for TM SPRs to make the actual source/dest be the actual TM SPRs. Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Diffstat (limited to 'arch/powerpc/include')
-rw-r--r--arch/powerpc/include/asm/kvm_book3s.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s.h b/arch/powerpc/include/asm/kvm_book3s.h
index fc15ad9dfc3b..43e8bb18c2d7 100644
--- a/arch/powerpc/include/asm/kvm_book3s.h
+++ b/arch/powerpc/include/asm/kvm_book3s.h
@@ -210,6 +210,7 @@ extern void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
extern void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
unsigned int vec);
extern void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags);
+extern void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac);
extern void kvmppc_set_bat(struct kvm_vcpu *vcpu, struct kvmppc_bat *bat,
bool upper, u32 val);
extern void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr);