On 03/12/2018 12:15, Xin Li (Talons) wrote:
> Hi Juergen,
> thanks for your comments.
>
>Are you suggesting to call apic_is_x2apic_enabled() in __x2apic_disable()?
>but I think that's exact what changed due to the fake xen_cpuid value.
>Doing so will probably still see the EXTD bit
in Li (Talons); Sergey Dyasli; Andrew Cooper; Igor Druzhinin
Subject: Re: [Xen-devel] [PATCH v1] restore the fake x2apic value for cpuid
On 03/12/2018 08:00, Juergen Gross wrote:
> On 22/11/2018 08:18, Xin Li wrote:
>> From: Talons Lee
>>
>> Commit e657fcc clears cpu x2apic capab
On 03/12/2018 08:00, Juergen Gross wrote:
> On 22/11/2018 08:18, Xin Li wrote:
>> From: Talons Lee
>>
>> Commit e657fcc clears cpu x2apic capability bit instead of using fake
>> cpuid value. However, with cpuid x2apic bit on, xen_read_msr_safe() will
>> not clear the EXTD bit, which leads to unces
On 22/11/2018 08:18, Xin Li wrote:
> From: Talons Lee
>
> Commit e657fcc clears cpu x2apic capability bit instead of using fake
> cpuid value. However, with cpuid x2apic bit on, xen_read_msr_safe() will
> not clear the EXTD bit, which leads to uncessary msr write trying to
> disable x2apic in __x
From: Talons Lee
Commit e657fcc clears cpu x2apic capability bit instead of using fake
cpuid value. However, with cpuid x2apic bit on, xen_read_msr_safe() will
not clear the EXTD bit, which leads to uncessary msr write trying to
disable x2apic in __x2apic_disable(). So restore the fake x2apic val
