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KVM: Add a special exit reason when exiting due to an interrupt

Browse source 
This is redundant, as we also return -EINTR from the ioctl, but it
allows us to examine the exit_reason field on resume without seeing
old data.

Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Avi Kivity 2007-03-04 14:24:03 +02:00
parent 8eb7d334bd
commit 1b19f3e61d
3 changed files with 6 additions and 1 deletions
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2
drivers/kvm/svm.c
View file

@ -1619,12 +1619,14 @@ static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (signal_pending(current)) {
++kvm_stat.signal_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
}
if (dm_request_for_irq_injection(vcpu, kvm_run)) {
++kvm_stat.request_irq_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
}
kvm_resched(vcpu);

2
drivers/kvm/vmx.c
View file

@ -1941,12 +1941,14 @@ static int vmx_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (signal_pending(current)) {
++kvm_stat.signal_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
}
if (dm_request_for_irq_injection(vcpu, kvm_run)) {
++kvm_stat.request_irq_exits;
post_kvm_run_save(vcpu, kvm_run);
kvm_run->exit_reason = KVM_EXIT_INTR;
return -EINTR;
}

3
include/linux/kvm.h
View file

@ -11,7 +11,7 @@
#include <asm/types.h>
#include <linux/ioctl.h>
#define KVM_API_VERSION 8
#define KVM_API_VERSION 9
/*
* Architectural interrupt line count, and the size of the bitmap needed
@ -45,6 +45,7 @@ enum kvm_exit_reason {
KVM_EXIT_IRQ_WINDOW_OPEN = 7,
KVM_EXIT_SHUTDOWN = 8,
KVM_EXIT_FAIL_ENTRY = 9,
KVM_EXIT_INTR = 10,
};
/* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */