aboutsummaryrefslogtreecommitdiff
path: root/drivers/kvm/vmx.c
diff options
context:
space:
mode:
authorAvi Kivity <avi@qumranet.com>2007-01-05 16:36:54 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2007-01-05 23:55:27 -0800
commite2dec939db126989808853d218e426daaeebc9e2 (patch)
tree5c742e609e43090df396fc1c7a6b4c526099dbea /drivers/kvm/vmx.c
parent714b93da1a6d97307dfafb9915517879d8a66c0d (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.c15
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)