From mboxrd@z Thu Jan  1 00:00:00 1970
From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Subject: Re: [PART2 PATCH v6 12/12] svm: Implements update_pi_irte hook to
 setup posted interrupt
Date: Fri, 19 Aug 2016 17:04:06 +0200
Message-ID: <20160819150405.GA5282@potion>
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2016-08-19 16:49+0200, Radim Krčmář:
>   Minor design note:
>   To make the usage of "struct amd_ir_data" safer, we could pass "struct
>   list_head" into irq_set_vcpu_affinity(), instead of returning "struct
>   amd_ir_data *".
> 
>   irq_set_vcpu_affinity() would add "struct amd_ir_data" to the list only
>   if ir_data was not already in some list and report whether the list
>   was modified.

No, this would not simplify the search.  An important point of list_head
in amd_ir_data was to let us know the current list.