diff options
| author | Avi Kivity <avi@qumranet.com> | 2007-01-05 16:36:54 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2007-01-05 23:55:27 -0800 |
| commit | e2dec939db126989808853d218e426daaeebc9e2 (patch) | |
| tree | 5c742e609e43090df396fc1c7a6b4c526099dbea /drivers/kvm/vmx.c | |
| parent | 714b93da1a6d97307dfafb9915517879d8a66c0d (diff) | |
[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/vmx.c')
| -rw-r--r-- | drivers/kvm/vmx.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 59178ad4d34..ed395673977 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -1289,6 +1289,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) unsigned long cr2, rip; u32 vect_info; enum emulation_result er; + int r; vect_info = vmcs_read32(IDT_VECTORING_INFO_FIELD); intr_info = vmcs_read32(VM_EXIT_INTR_INFO); @@ -1317,7 +1318,12 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) cr2 = vmcs_readl(EXIT_QUALIFICATION); spin_lock(&vcpu->kvm->lock); - if (!kvm_mmu_page_fault(vcpu, cr2, error_code)) { + r = kvm_mmu_page_fault(vcpu, cr2, error_code); + if (r < 0) { + spin_unlock(&vcpu->kvm->lock); + return r; + } + if (!r) { spin_unlock(&vcpu->kvm->lock); return 1; } @@ -1680,6 +1686,7 @@ static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) u8 fail; u16 fs_sel, gs_sel, ldt_sel; int fs_gs_ldt_reload_needed; + int r; again: /* @@ -1853,6 +1860,7 @@ again: if (fail) { kvm_run->exit_type = KVM_EXIT_TYPE_FAIL_ENTRY; kvm_run->exit_reason = vmcs_read32(VM_INSTRUCTION_ERROR); + r = 0; } else { if (fs_gs_ldt_reload_needed) { load_ldt(ldt_sel); @@ -1872,7 +1880,8 @@ again: } vcpu->launched = 1; kvm_run->exit_type = KVM_EXIT_TYPE_VM_EXIT; - if (kvm_handle_exit(kvm_run, vcpu)) { + r = kvm_handle_exit(kvm_run, vcpu); + if (r > 0) { /* Give scheduler a change to reschedule. */ if (signal_pending(current)) { ++kvm_stat.signal_exits; @@ -1892,7 +1901,7 @@ again: } post_kvm_run_save(vcpu, kvm_run); - return 0; + return r; } static void vmx_flush_tlb(struct kvm_vcpu *vcpu) |