linux-kernel - Re: [PATCH v2] dmaengine: idxd: Remove shadow Event Log head stored in idxd

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Message-Id: <170808688943.369567.17829414999470359009.b4-ty@kernel.org>
Date: Fri, 16 Feb 2024 18:04:49 +0530
From: Vinod Koul <vkoul@...nel.org>
To: Dave Jiang <dave.jiang@...el.com>, Fenghua Yu <fenghua.yu@...el.com>
Cc: dmaengine@...r.kernel.org, linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] dmaengine: idxd: Remove shadow Event Log head
 stored in idxd


On Wed, 14 Feb 2024 18:49:31 -0800, Fenghua Yu wrote:
> head is defined in idxd->evl as a shadow of head in the EVLSTATUS register.
> There are two issues related to the shadow head:
> 
> 1. Mismatch between the shadow head and the state of the EVLSTATUS
>    register:
>    If Event Log is supported, upon completion of the Enable Device command,
>    the Event Log head in the variable idxd->evl->head should be cleared to
>    match the state of the EVLSTATUS register. But the variable is not reset
>    currently, leading mismatch between the variable and the register state.
>    The mismatch causes incorrect processing of Event Log entries.
> 
> [...]

Applied, thanks!

[1/1] dmaengine: idxd: Remove shadow Event Log head stored in idxd
      commit: ecec7c9f29a7114a3e23a14020b1149ea7dffb4f

Best regards,
-- 
~Vinod