linux-kernel - Re: [PATCH] cxl/core/mbox: get next_persistent_bytes by next_persistent

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

Message-ID: <5fed153a-6668-c980-c573-3a31077c52ac@intel.com>
Date:   Thu, 7 Dec 2023 10:29:18 +0800
From:   Huaisheng Ye <huaisheng.ye@...el.com>
To:     Ira Weiny <ira.weiny@...el.com>, <dan.j.williams@...el.com>
CC:     <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <pei.p.jia@...el.com>
Subject: Re: [PATCH] cxl/core/mbox: get next_persistent_bytes by
 next_persistent_cap

On 2023-12-06 05:48, Ira Weiny wrote:
> Huaisheng Ye wrote:
>> According to CXL 2.0 8.2.9.5.2.1 table 176, the next Persistent
>> Bytes should be calculated by next Persistent Capacity.
>>
>> Signed-off-by: Huaisheng Ye <huaisheng.ye@...el.com>
> Do we have a fixes tag for this?  Was there a bug associated with this
> find?
>
> Ira

Hi Ira,

This bug could be found in cxl-next branch.
It looks like just cxl-pci would calculate next_persistent_bytes during
probe. Afterwards, it will no longer be accessed by current cxl drivers.

For v78 ndctl, cxl_cmd_partition_get_next_persistent_size is calculated from
next_persistent, which is correct.

May I have your Reviewed-by?

Huaisheng