Re: [Xen-devel] [PATCH] xen/apic: Update the comment for apic_id_mask

From	"Wei, Jiangang" <weijg.fnst@cn.fujitsu.com>
Newsgroups	linux.kernel
Subject	Re: [Xen-devel] [PATCH] xen/apic: Update the comment for apic_id_mask
Date	2016-07-13 10:00 +0200
Message-ID	<rUnfj-8tL-17@gated-at.bofh.it> (permalink)
References	<rS8kp-1om-1@gated-at.bofh.it> <rSjpv-jj-17@gated-at.bofh.it> <rSjzc-nu-17@gated-at.bofh.it>
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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?

Thanks,
wei
> 
> -boris
> 
> 
> > CC-ing the proper maintainers.
> >> Signed-off-by: Wei Jiangang <weijg.fnst@cn.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@lists.xen.org
> >> https://lists.xen.org/xen-devel
> 
> 
> 
>

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Re: [Xen-devel] [PATCH] xen/apic: Update the comment for  apic_id_mask "Wei, Jiangang" <weijg.fnst@cn.fujitsu.com> - 2016-07-13 10:00 +0200
  Re: [Xen-devel] [PATCH] xen/apic: Update the comment for apic_id_mask Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-07-13 21:00 +0200

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