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Re: [PATCH v6 31/36] KVM: selftests: Add Xen runstate migration test
- To: Paolo Bonzini <pbonzini@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>, Sean Christopherson <seanjc@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Paul Durrant <paul@xxxxxxx>, Jonathan Cameron <jic23@xxxxxxxxxx>, Sascha Bischoff <Sascha.Bischoff@xxxxxxx>, Marc Zyngier <maz@xxxxxxxxxx>, Joey Gouly <joey.gouly@xxxxxxx>, Jack Allister <jalliste@xxxxxxxxxx>, Dongli Zhang <dongli.zhang@xxxxxxxxxx>, joe.jin@xxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx
- From: David Woodhouse <dwmw2@xxxxxxxxxxxxx>
- Date: Sun, 26 Jul 2026 10:21:39 +0100
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- Delivery-date: Sun, 26 Jul 2026 09:22:02 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Fri, 2026-07-03 at 22:18 +0100, David Woodhouse wrote:
>
> + /* Restore TSC offset */
> + vcpu_set_msr(vcpu, MSR_IA32_TSC_ADJUST, tsc_offset);
Huh, what nonsense is this? That's for the guest to use. The test
should use KVM_VCPU_TSC_OFFSET. Not quite sure how that ever worked.
Fixed in the kvmclock7 branch.
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