linux-kernel - Re: [Xen-devel] [PATCH] xen/apic: Update the comment for apic_id

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Message-ID: <6227c76d-eb29-fa28-98cc-a3fcf9680d0c@oracle.com>
Date:	Wed, 13 Jul 2016 14:51:07 -0400
From:	Boris Ostrovsky <boris.ostrovsky@...cle.com>
To:	"Wei, Jiangang" <weijg.fnst@...fujitsu.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"david.vrabel@...rix.com" <david.vrabel@...rix.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>,
	"jgross@...e.com" <jgross@...e.com>,
	"konrad.wilk@...cle.com" <konrad.wilk@...cle.com>,
	"x86@...nel.org" <x86@...nel.org>, "hpa@...or.com" <hpa@...or.com>,
	"mingo@...hat.com" <mingo@...hat.com>,
	"xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>
Subject: Re: [Xen-devel] [PATCH] xen/apic: Update the comment for apic_id_mask

On 07/13/2016 03:56 AM, Wei, Jiangang wrote:
> On Thu, 2016-07-07 at 11:37 -0400, Boris Ostrovsky wrote:
>> On 07/07/2016 11:25 AM, Konrad Rzeszutek Wilk wrote:
>>> On Thu, Jul 07, 2016 at 11:28:18AM +0800, Wei Jiangang wrote:
>>>> verify_local_APIC() had been removed by
>>>> commit 4399c03c6780 ("x86/apic: Remove verify_local_APIC()"),
>>>> so apic_id_mask isn't used by it.
>> Is anyone actually using this field? It looks like 4399c03c6780 removed
>> the only user.
> Indeed, the field is useless.
> Maybe we can remove this field from the struct apic .
> what's your opinion?


Since noone seems to be using those I think it can be removed.

-boris


>
> Thanks,
> wei
>> -boris
>>
>>
>>> CC-ing the proper maintainers.
>>>> Signed-off-by: Wei Jiangang <weijg.fnst@...fujitsu.com>
>>>> ---
>>>>  arch/x86/xen/apic.c | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/arch/x86/xen/apic.c b/arch/x86/xen/apic.c
>>>> index db52a7fafcc2..9cbb1f48381b 100644
>>>> --- a/arch/x86/xen/apic.c
>>>> +++ b/arch/x86/xen/apic.c
>>>> @@ -177,7 +177,7 @@ static struct apic xen_pv_apic = {
>>>>  
>>>>  	.get_apic_id 			= xen_get_apic_id,
>>>>  	.set_apic_id 			= xen_set_apic_id, /* Can be NULL on 32-bit. */
>>>> -	.apic_id_mask			= 0xFF << 24, /* Used by verify_local_APIC. Match with what xen_get_apic_id does. */
>>>> +	.apic_id_mask			= 0xFF << 24, /* Match with what xen_get_apic_id does. */
>>>>  
>>>>  	.cpu_mask_to_apicid_and		= flat_cpu_mask_to_apicid_and,
>>>>  
>>>> -- 
>>>> 1.9.3
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Xen-devel mailing list
>>>> Xen-devel@...ts.xen.org
>>>> https://lists.xen.org/xen-devel
>>
>>
>>
>
>