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KVM: x86/xen: Update self test for Xen PV timers

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Add test cases for timers in the past, and reading the status of a timer
which has already fired.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <20220309143835.253911-3-dwmw2@infradead.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
David Woodhouse 2022-03-09 14:38:35 +00:00 committed by Paolo Bonzini
parent 25eaeebe71
commit a29833e36b
1 changed files with 32 additions and 3 deletions
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35
tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
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@ -325,6 +325,11 @@ static void guest_code(void)
guest_wait_for_irq();
GUEST_SYNC(20);
/* Timer should have fired already */
guest_wait_for_irq();
GUEST_SYNC(21);
}
static int cmp_timespec(struct timespec *a, struct timespec *b)
@ -746,6 +751,7 @@ int main(int argc, char *argv[])
tmr.u.timer.expires_ns = rs->state_entry_time + 100000000,
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_SET_ATTR, &tmr);
alarm(1);
break;
case 19:
@ -753,15 +759,38 @@ int main(int argc, char *argv[])
if (verbose)
printf("Testing SCHEDOP_poll wake on unmasked event\n");
tmr.u.timer.expires_ns = rs->state_entry_time + 100000000,
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_SET_ATTR, &tmr);
evtchn_irq_expected = true;
tmr.u.timer.expires_ns = rs->state_entry_time + 100000000;
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_SET_ATTR, &tmr);
/* Read it back and check the pending time is reported correctly */
tmr.u.timer.expires_ns = 0;
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_GET_ATTR, &tmr);
TEST_ASSERT(tmr.u.timer.expires_ns == rs->state_entry_time + 100000000,
"Timer not reported pending");
alarm(1);
break;
case 20:
TEST_ASSERT(!evtchn_irq_expected,
"Expected event channel IRQ but it didn't happen");
shinfo->evtchn_pending[1] = 0;
/* Read timer and check it is no longer pending */
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_GET_ATTR, &tmr);
TEST_ASSERT(!tmr.u.timer.expires_ns, "Timer still reported pending");
shinfo->evtchn_pending[0] = 0;
if (verbose)
printf("Testing timer in the past\n");
evtchn_irq_expected = true;
tmr.u.timer.expires_ns = rs->state_entry_time - 100000000ULL;
vcpu_ioctl(vm, VCPU_ID, KVM_XEN_VCPU_SET_ATTR, &tmr);
alarm(1);
break;
case 21:
TEST_ASSERT(!evtchn_irq_expected,
"Expected event channel IRQ but it didn't happen");
goto done;
case 0x20: