Li Zhijian <zhijianx.li@xxxxxxxxx> writes:
> 0Day robot noticed that "FAIL: EPT - MMIO access" since kernel commit
> d1766202: ("x86/kvm/lapic: always disable MMIO interface in x2APIC mode")
>
> As the changelog said, MMIO accessing is disabled in x2APIC mode
> which is a common feature in modern CPUs, so disable x2APIC mode when the tests
> try to access lapic MMIO accrodingly
>
> CC: Rong Chen <rong.a.chen@xxxxxxxxx>
> CC: Philip Li <philip.li@xxxxxxxxx>
> CC: 0day robot <lkp@xxxxxxxxx>
> CC: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> Signed-off-by: Li Zhijian <zhijianx.li@xxxxxxxxx>
Yesterday I sent a patch fixing the issue:
https://www.spinics.net/lists/kvm/msg176052.html
the patch is different but the idea is the same.
> ---
> x86/unittests.cfg | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/x86/unittests.cfg b/x86/unittests.cfg
> index 3b21a85..883dd82 100644
> --- a/x86/unittests.cfg
> +++ b/x86/unittests.cfg
> @@ -340,7 +340,7 @@ groups = vmx
>
> [vmx_EPT_AD_disabled]
> file = vmx.flat
> -extra_params = -cpu host,+vmx -append EPT_A/D_disabled
> +extra_params = -cpu host,+vmx,-x2apic -append EPT_A/D_disabled
> arch = x86_64
> groups = vmx
--
Vitaly
