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authorLinus Torvalds <torvalds@linux-foundation.org>2012-04-07 09:53:33 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-04-07 09:53:33 -0700
commita3fac08085136fb8b56bbd290500ed03c94ee5d1 (patch)
tree849f73fd0d7d8d519735ad0eb3b4931c7c27aac4 /arch/x86
parent664481ed45cdbda2ab853ddd3c2690b69aca9103 (diff)
parente08759215b7dcb7111e94f0f96918dd98e86ca6b (diff)
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Merge branch 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull a few KVM fixes from Avi Kivity: "A bunch of powerpc KVM fixes, a guest and a host RCU fix (unrelated), and a small build fix." * 'kvm-updates/3.4' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: Resolve RCU vs. async page fault problem KVM: VMX: vmx_set_cr0 expects kvm->srcu locked KVM: PMU: Fix integer constant is too large warning in kvm_pmu_set_msr() KVM: PPC: Book3S: PR: Fix preemption KVM: PPC: Save/Restore CR over vcpu_run KVM: PPC: Book3S HV: Save and restore CR in __kvmppc_vcore_entry KVM: PPC: Book3S HV: Fix kvm_alloc_linear in case where no linears exist KVM: PPC: Book3S: Compile fix for ppc32 in HIOR access code
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/kvm.c4
-rw-r--r--arch/x86/kvm/pmu.c2
-rw-r--r--arch/x86/kvm/vmx.c2
3 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 694d801bf606..b8ba6e4a27e4 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -38,6 +38,7 @@
#include <asm/traps.h>
#include <asm/desc.h>
#include <asm/tlbflush.h>
+#include <asm/idle.h>
static int kvmapf = 1;
@@ -253,7 +254,10 @@ do_async_page_fault(struct pt_regs *regs, unsigned long error_code)
kvm_async_pf_task_wait((u32)read_cr2());
break;
case KVM_PV_REASON_PAGE_READY:
+ rcu_irq_enter();
+ exit_idle();
kvm_async_pf_task_wake((u32)read_cr2());
+ rcu_irq_exit();
break;
}
}
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index a73f0c104813..173df38dbda5 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -369,7 +369,7 @@ int kvm_pmu_set_msr(struct kvm_vcpu *vcpu, u32 index, u64 data)
case MSR_CORE_PERF_FIXED_CTR_CTRL:
if (pmu->fixed_ctr_ctrl == data)
return 0;
- if (!(data & 0xfffffffffffff444)) {
+ if (!(data & 0xfffffffffffff444ull)) {
reprogram_fixed_counters(pmu, data);
return 0;
}
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 280751c84724..ad85adfef843 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3906,7 +3906,9 @@ static int vmx_vcpu_reset(struct kvm_vcpu *vcpu)
vmcs_write16(VIRTUAL_PROCESSOR_ID, vmx->vpid);
vmx->vcpu.arch.cr0 = X86_CR0_NW | X86_CR0_CD | X86_CR0_ET;
+ vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
vmx_set_cr0(&vmx->vcpu, kvm_read_cr0(vcpu)); /* enter rmode */
+ srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
vmx_set_cr4(&vmx->vcpu, 0);
vmx_set_efer(&vmx->vcpu, 0);
vmx_fpu_activate(&vmx->vcpu);