From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Xiaoyao Li <xiaoyao.li@intel.com>,
Like Xu <like.xu.linux@gmail.com>,
Yu Zhang <yu.c.zhang@linux.intel.com>
Subject: [PATCH v3 13/21] KVM: selftests: Drop now-redundant checks on PERF_CAPABILITIES writes
Date: Fri, 10 Mar 2023 16:46:10 -0800 [thread overview]
Message-ID: <20230311004618.920745-14-seanjc@google.com> (raw)
In-Reply-To: <20230311004618.920745-1-seanjc@google.com>
Now that vcpu_set_msr() verifies the expected "read what was wrote"
semantics of all durable MSRs, including PERF_CAPABILITIES, drop the
now-redundant manual checks in the VMX PMU caps test.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
index 035470b38400..f7a27b5c949b 100644
--- a/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
+++ b/tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
@@ -51,10 +51,7 @@ static void test_basic_perf_capabilities(union perf_capabilities host_cap)
struct kvm_vm *vm = vm_create_with_one_vcpu(&vcpu, NULL);
vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, 0);
- ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), 0);
-
vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, host_cap.capabilities);
- ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), host_cap.capabilities);
kvm_vm_free(vm);
}
@@ -67,9 +64,6 @@ static void test_fungible_perf_capabilities(union perf_capabilities host_cap)
/* testcase 1, set capabilities when we have PDCM bit */
vcpu_set_msr(vcpu, MSR_IA32_PERF_CAPABILITIES, PMU_CAP_FW_WRITES);
- /* check capabilities can be retrieved with KVM_GET_MSR */
- ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
-
/* check whatever we write with KVM_SET_MSR is _not_ modified */
vcpu_run(vcpu);
ASSERT_EQ(vcpu_get_msr(vcpu, MSR_IA32_PERF_CAPABILITIES), PMU_CAP_FW_WRITES);
--
2.40.0.rc1.284.g88254d51c5-goog
next prev parent reply other threads:[~2023-03-11 0:48 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-11 0:45 [PATCH v3 00/21] KVM: x86: Disallow writes to feature MSRs post-KVM_RUN Sean Christopherson
2023-03-11 0:45 ` [PATCH v3 01/21] KVM: x86: Rename kvm_init_msr_list() to clarify it inits multiple lists Sean Christopherson
2023-03-11 0:45 ` [PATCH v3 02/21] KVM: x86: Add a helper to query whether or not a vCPU has ever run Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 03/21] KVM: x86: Add macros to track first...last VMX feature MSRs Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 04/21] KVM: x86: Generate set of VMX feature MSRs using first/last definitions Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 05/21] KVM: selftests: Split PMU caps sub-tests to avoid writing MSR after KVM_RUN Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 06/21] KVM: x86: Disallow writes to immutable feature MSRs " Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 07/21] KVM: x86/pmu: WARN and bug the VM if PMU is refreshed after vCPU has run Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 08/21] KVM: x86/pmu: Zero out LBR capabilities during PMU refresh Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 09/21] KVM: selftests: Move 0/initial value PERF_CAPS checks to dedicated sub-test Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 10/21] KVM: selftests: Assert that full-width PMC writes are supported if PDCM=1 Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 11/21] KVM: selftests: Print out failing MSR and value in vcpu_set_msr() Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 12/21] KVM: selftests: Verify KVM preserves userspace writes to "durable" MSRs Sean Christopherson
2023-03-11 0:46 ` Sean Christopherson [this message]
2023-03-11 0:46 ` [PATCH v3 14/21] KVM: selftests: Test all fungible features in PERF_CAPABILITIES Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 15/21] KVM: selftests: Test all immutable non-format bits " Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 16/21] KVM: selftests: Expand negative testing of guest writes to PERF_CAPABILITIES Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 17/21] KVM: selftests: Test post-KVM_RUN " Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 18/21] KVM: selftests: Drop "all done!" printf() from PERF_CAPABILITIES test Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 19/21] KVM: selftests: Refactor LBR_FMT test to avoid use of separate macro Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 20/21] KVM: selftests: Add negative testcase for PEBS format in PERF_CAPABILITIES Sean Christopherson
2023-03-11 0:46 ` [PATCH v3 21/21] KVM: selftests: Verify LBRs are disabled if vPMU is disabled Sean Christopherson
2023-04-07 2:02 ` [PATCH v3 00/21] KVM: x86: Disallow writes to feature MSRs post-KVM_RUN Sean Christopherson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230311004618.920745-14-seanjc@google.com \
--to=seanjc@google.com \
--cc=kvm@vger.kernel.org \
--cc=like.xu.linux@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=xiaoyao.li@intel.com \
--cc=yu.c.zhang@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®