diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-01-06 00:36:54 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2007-01-06 07:55:27 (GMT) |
| commit | e2dec939db126989808853d218e426daaeebc9e2 (patch) | |
| tree | 5c742e609e43090df396fc1c7a6b4c526099dbea /drivers/kvm/svm.c | |
| parent | 714b93da1a6d97307dfafb9915517879d8a66c0d (diff) | |
| download | linux-e2dec939db126989808853d218e426daaeebc9e2.tar.xz | |
[PATCH] KVM: MMU: Detect oom conditions and propagate error to userspace
Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/kvm/svm.c')
| -rw-r--r-- | drivers/kvm/svm.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 9925001..af1e7b3 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -852,6 +852,7 @@ static int pf_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) u64 fault_address; u32 error_code; enum emulation_result er; + int r; if (is_external_interrupt(exit_int_info)) push_irq(vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK); @@ -860,7 +861,12 @@ static int pf_interception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) fault_address = vcpu->svm->vmcb->control.exit_info_2; error_code = vcpu->svm->vmcb->control.exit_info_1; - if (!kvm_mmu_page_fault(vcpu, fault_address, error_code)) { + r = kvm_mmu_page_fault(vcpu, fault_address, error_code); + if (r < 0) { + spin_unlock(&vcpu->kvm->lock); + return r; + } + if (!r) { spin_unlock(&vcpu->kvm->lock); return 1; } @@ -1398,6 +1404,7 @@ static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) u16 fs_selector; u16 gs_selector; u16 ldt_selector; + int r; again: do_interrupt_requests(vcpu, kvm_run); @@ -1565,7 +1572,8 @@ again: return 0; } - if (handle_exit(vcpu, kvm_run)) { + r = handle_exit(vcpu, kvm_run); + if (r > 0) { if (signal_pending(current)) { ++kvm_stat.signal_exits; post_kvm_run_save(vcpu, kvm_run); @@ -1581,7 +1589,7 @@ again: goto again; } post_kvm_run_save(vcpu, kvm_run); - return 0; + return r; } static void svm_flush_tlb(struct kvm_vcpu *vcpu) |