From: Paul Durrant <paul@xen.org>
To: Paolo Bonzini <pbonzini@redhat.com>,
Jonathan Corbet <corbet@lwn.net>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
David Woodhouse <dwmw2@infradead.org>,
Paul Durrant <paul@xen.org>, Shuah Khan <shuah@kernel.org>,
kvm@vger.kernel.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org
Subject: [PATCH v11 14/19] KVM: selftests / xen: re-map vcpu_info using HVA rather than GPA
Date: Tue, 19 Dec 2023 16:11:04 +0000 [thread overview]
Message-ID: <20231219161109.1318-15-paul@xen.org> (raw)
In-Reply-To: <20231219161109.1318-1-paul@xen.org>
From: Paul Durrant <pdurrant@amazon.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@amazon.com>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
---
Cc: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
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
next prev parent reply other threads:[~2023-12-19 16:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-19 16:10 [PATCH v11 00/19] KVM: xen: update shared_info and vcpu_info handling Paul Durrant
2023-12-19 16:10 ` [PATCH v11 01/19] KVM: pfncache: Add a map helper function Paul Durrant
2023-12-19 16:10 ` [PATCH v11 02/19] KVM: pfncache: remove unnecessary exports Paul Durrant
2023-12-19 16:10 ` [PATCH v11 03/19] KVM: xen: mark guest pages dirty with the pfncache lock held Paul Durrant
2023-12-19 16:10 ` [PATCH v11 04/19] KVM: pfncache: add a mark-dirty helper Paul Durrant
2023-12-19 16:10 ` [PATCH v11 05/19] KVM: pfncache: remove KVM_GUEST_USES_PFN usage Paul Durrant
2023-12-19 16:10 ` [PATCH v11 06/19] KVM: pfncache: stop open-coding offset_in_page() Paul Durrant
2023-12-19 16:10 ` [PATCH v11 07/19] KVM: pfncache: include page offset in uhva and use it consistently Paul Durrant
2023-12-19 16:10 ` [PATCH v11 08/19] KVM: pfncache: allow a cache to be activated with a fixed (userspace) HVA Paul Durrant
2023-12-20 2:40 ` Xu Yilun
2023-12-19 16:10 ` [PATCH v11 09/19] KVM: xen: separate initialization of shared_info cache and content Paul Durrant
2023-12-19 16:11 ` [PATCH v11 10/19] KVM: xen: re-initialize shared_info if guest (32/64-bit) mode is set Paul Durrant
2023-12-19 16:11 ` [PATCH v11 11/19] KVM: xen: allow shared_info to be mapped by fixed HVA Paul Durrant
2023-12-19 16:11 ` [PATCH v11 12/19] KVM: xen: allow vcpu_info " Paul Durrant
2023-12-19 16:11 ` [PATCH v11 13/19] KVM: selftests / xen: map shared_info using HVA rather than GFN Paul Durrant
2023-12-19 16:11 ` Paul Durrant [this message]
2023-12-19 16:11 ` [PATCH v11 15/19] KVM: xen: advertize the KVM_XEN_HVM_CONFIG_SHARED_INFO_HVA capability Paul Durrant
2023-12-19 16:11 ` [PATCH v11 16/19] KVM: xen: split up kvm_xen_set_evtchn_fast() Paul Durrant
2023-12-19 16:46 ` David Woodhouse
2023-12-19 16:11 ` [PATCH v11 17/19] KVM: xen: don't block on pfncache locks in kvm_xen_set_evtchn_fast() Paul Durrant
2023-12-19 16:11 ` [PATCH v11 18/19] KVM: pfncache: check the need for invalidation under read lock first Paul Durrant
2023-12-19 16:11 ` [PATCH v11 19/19] KVM: xen: allow vcpu_info content to be 'safely' copied Paul Durrant
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