Re: [PATCH 1/4] KVM: x86: hyperv: Remove duplicate definitions of Reference TSC Page

From: Paolo Bonzini
Date: Tue Apr 21 2020 - 07:16:50 EST


On 21/04/20 11:29, Wei Liu wrote:
> On Mon, Apr 20, 2020 at 10:38:35AM -0700, Michael Kelley wrote:
>> The Hyper-V Reference TSC Page structure is defined twice. struct
>> ms_hyperv_tsc_page has padding out to a full 4 Kbyte page size. But
>> the padding is not needed because the declaration includes a union
>> with HV_HYP_PAGE_SIZE. KVM uses the second definition, which is
>> struct _HV_REFERENCE_TSC_PAGE, because it does not have the padding.
>>
>> Fix the duplication by removing the padding from ms_hyperv_tsc_page.
>> Fix up the KVM code to use it. Remove the no longer used struct
>> _HV_REFERENCE_TSC_PAGE.
>>
>> There is no functional change.
>>
>> Signed-off-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
>> ---
>> arch/x86/include/asm/hyperv-tlfs.h | 8 --------
>> arch/x86/include/asm/kvm_host.h | 2 +-
>> arch/x86/kvm/hyperv.c | 4 ++--
>
> Paolo, this patch touches KVM code. Let me know how you would like to
> handle this.

Just include it, I don't expect conflicts.

Acked-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>

Paolo