linux-kernel - [PATCH v2 2/7] KVM: selftests: x86: sync_regs_test: Get regs structure before modifying it

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Message-ID: <20231005143839.365297-3-thuth@redhat.com>
Date:   Thu,  5 Oct 2023 16:38:34 +0200
From:   Thomas Huth <thuth@...hat.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org
Cc:     Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org
Subject: [PATCH v2 2/7] KVM: selftests: x86: sync_regs_test: Get regs structure before modifying it

The regs structure just accidentially contains the right values
from the previous test in the spot where we want to change rbx.
It's cleaner if we properly initialize the structure here before
using it.

Suggested-by: Sean Christopherson <seanjc@...gle.com>
Signed-off-by: Thomas Huth <thuth@...hat.com>
---
 tools/testing/selftests/kvm/x86_64/sync_regs_test.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
index 8c3898cf79b31..1cd19dfa0046c 100644
--- a/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
+++ b/tools/testing/selftests/kvm/x86_64/sync_regs_test.c
@@ -315,6 +315,7 @@ int main(int argc, char *argv[])
 	run->kvm_valid_regs = 0;
 	run->kvm_dirty_regs = 0;
 	run->s.regs.regs.rbx = 0xAAAA;
+	vcpu_regs_get(vcpu, &regs);
 	regs.rbx = 0xBAC0;
 	vcpu_regs_set(vcpu, &regs);
 	vcpu_run(vcpu);
-- 
2.41.0