linux-kernel - Re: [PATCH 2/2] drm/qxl: Add qxl dma fence release function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:   Fri, 17 Sep 2021 09:36:37 +0800
From:   maobibo <maobibo@...ngson.cn>
To:     Gerd Hoffmann <kraxel@...hat.com>
Cc:     Dave Airlie <airlied@...hat.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH 2/2] drm/qxl: Add qxl dma fence release function



On 09/15/2021 02:38 PM, Gerd Hoffmann wrote:
> On Tue, Sep 14, 2021 at 02:23:52AM -0400, bibo mao wrote:
>> Add qxl dma fence release function, previously default dma fence
>> release function is used, and fence pointer is used to free 
>> the memory. With this patch, actual qxl release pointer is used
>> to free memory, so that dma fence can put at any place of 
>> struct qxl_release.
> 
> Why?  Is there a problem with struct dma_fence being the first
> element of struct qxl_release?
Yes, there is no problem put it in the first element of struct qxl_release. This patch has no actual use,it is only more flexible. And you can discard this patch if other graphics drivers do the same thing like this.

regards
bibo,mao
> 
> take care,
>   Gerd
>