github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 14:12:07 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

KVM: selftests: re-map Xen's vcpu_info using HVA rather than GPA

Browse Source 
If the relevant capability (KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA) is present
then re-map vcpu_info using the HVA part way through the tests to make sure
then there is no functional change.

Signed-off-by: Paul Durrant <pdurrant@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/20240215152916.1158-16-paul@xen.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Paul Durrant 2024-02-15 15:29:10 +00:00 committed by Sean Christopherson
parent 9397b5334a
commit b4dfbfdc95
1 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
View File

@ -62,6 +62,7 @@ enum {
TEST_POLL_TIMEOUT,
TEST_POLL_MASKED,
TEST_POLL_WAKE,
SET_VCPU_INFO,
TEST_TIMER_PAST,
TEST_LOCKING_SEND_RACE,
TEST_LOCKING_POLL_RACE,
@ -321,6 +322,10 @@ static void guest_code(void)
GUEST_SYNC(TEST_POLL_WAKE);
/* Set the vcpu_info to point at exactly the place it already is to
* make sure the attribute is functional. */
GUEST_SYNC(SET_VCPU_INFO);
/* A timer wake an *unmasked* port which should wake us with an
* actual interrupt, while we're polling on a different port. */
ports[0]++;
@ -888,6 +893,16 @@ int main(int argc, char *argv[])
alarm(1);
break;
case SET_VCPU_INFO:
if (has_shinfo_hva) {
struct kvm_xen_vcpu_attr vih = {
.type = KVM_XEN_VCPU_ATTR_TYPE_VCPU_INFO_HVA,
.u.hva = (unsigned long)vinfo
};
vcpu_ioctl(vcpu, KVM_XEN_VCPU_SET_ATTR, &vih);
}
break;
case TEST_TIMER_PAST:
TEST_ASSERT(!evtchn_irq_expected,
"Expected event channel IRQ but it didn't happen");