FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-16 05:50:19 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

KVM: PPC: Make Performance Counters work

Browse Source 
When we get a performance counter interrupt we need to route it on to the
Linux handler after we got out of the guest context. We also need to tell
our handling code that this particular interrupt doesn't need treatment.

So let's add those two bits in, making perf work while having a KVM guest
running.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Alexander Graf 2010-04-20 02:49:47 +02:00 committed by Avi Kivity
parent af7b4d104b
commit 7fdaec997c
2 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/powerpc/kvm/book3s.c
View File

@ -873,6 +873,9 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->stat.ext_intr_exits++;
r = RESUME_GUEST;
break;
case BOOK3S_INTERRUPT_PERFMON:
r = RESUME_GUEST;
break;
case BOOK3S_INTERRUPT_PROGRAM:
{
enum emulation_result er;

2
arch/powerpc/kvm/book3s_interrupts.S
View File

@ -228,6 +228,8 @@ no_dcbz32_off:
beq call_linux_handler
cmpwi r12, BOOK3S_INTERRUPT_DECREMENTER
beq call_linux_handler
cmpwi r12, BOOK3S_INTERRUPT_PERFMON
beq call_linux_handler
/* Back to EE=1 */
mtmsr r6