linux-kernel - Re: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM

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Message-ID: <93f3b1c6-feec-9c3b-c2d0-6fceffd00ae9@gmail.com>
Date:   Tue, 10 Aug 2021 20:17:41 +0800
From:   Tianyu Lan <ltykernel@...il.com>
To:     Wei Liu <wei.liu@...nel.org>
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Subject: Re: [PATCH V3 01/13] x86/HV: Initialize GHCB page in Isolation VM

Hi Wei:
       Thanks for review.

On 8/10/2021 6:56 PM, Wei Liu wrote:
> On Mon, Aug 09, 2021 at 01:56:05PM -0400, Tianyu Lan wrote:
> [...]
>>   static int hv_cpu_init(unsigned int cpu)
>>   {
>>   	union hv_vp_assist_msr_contents msr = { 0 };
>> @@ -85,6 +111,8 @@ static int hv_cpu_init(unsigned int cpu)
>>   		}
>>   	}
>>   
>> +	hyperv_init_ghcb();
>> +
> 
> Why is the return value not checked here? If that's not required, can
> you leave a comment?
> 

The check is necessary here. Will update in the next version.

Thanks.