linux-kernel - Re: [LKP] [x86/kvm/lapic] d176620277: kvm-unit-tests.vmx_EPT_AD

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Message-ID: <4bfa3e6e-2b7d-dd0b-3b2a-a15531f482be@redhat.com>
Date:   Mon, 8 Oct 2018 15:11:09 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        kernel test robot <rong.a.chen@...el.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        kvm@...r.kernel.org, lkp@...org
Subject: Re: [LKP] [x86/kvm/lapic] d176620277:
 kvm-unit-tests.vmx_EPT_AD_disabled.fail

On 08/10/2018 15:04, Vitaly Kuznetsov wrote:
> kernel test robot <rong.a.chen@...el.com> writes:
> 
>> [31mFAIL[0m vmx_EPT_AD_disabled (19 tests, 1 unexpected failures)
> 
> It seems the test is buggy: MMIO access is tested by reading ACPI
> version from 0xfee00030 without putting APIC to xAPIC mode first. I'll
> double check and send a patch to kvm-unit-test in case my guess is
> correct.

Yes, it's probably using x2apic mode.

Paolo