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Message-Id: <20240215152916.1158-16-paul@xen.org>
Date: Thu, 15 Feb 2024 15:29:10 +0000
From: Paul Durrant <paul@....org>
To: Paolo Bonzini <pbonzini@...hat.com>,
Jonathan Corbet <corbet@....net>,
Christian Borntraeger <borntraeger@...ux.ibm.com>,
Janosch Frank <frankja@...ux.ibm.com>,
Claudio Imbrenda <imbrenda@...ux.ibm.com>,
David Hildenbrand <david@...hat.com>,
Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Alexander Gordeev <agordeev@...ux.ibm.com>,
Sven Schnelle <svens@...ux.ibm.com>,
Sean Christopherson <seanjc@...gle.com>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>,
Borislav Petkov <bp@...en8.de>,
Dave Hansen <dave.hansen@...ux.intel.com>,
x86@...nel.org,
"H. Peter Anvin" <hpa@...or.com>,
David Woodhouse <dwmw2@...radead.org>,
Paul Durrant <paul@....org>,
Shuah Khan <shuah@...nel.org>,
kvm@...r.kernel.org,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-s390@...r.kernel.org,
linux-kselftest@...r.kernel.org
Subject: [PATCH v13 15/21] KVM: selftests: re-map Xen's vcpu_info using HVA rather than GPA
From: Paul Durrant <pdurrant@...zon.com>
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@...zon.com>
Reviewed-by: David Woodhouse <dwmw@...zon.co.uk>
---
Cc: Sean Christopherson <seanjc@...gle.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: David Woodhouse <dwmw2@...radead.org>
v13:
- Patch title change.
v5:
- New in this version.
---
.../selftests/kvm/x86_64/xen_shinfo_test.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
index a61500ff0822..d2ea0435f4f7 100644
--- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
+++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
@@ -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");
--
2.39.2
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