linux-kernel - Re: [PATCH v2] iommu/arm-smmu-v3: Increase CMDQ drain timeout value

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Message-ID: <20170530111835.GE32289@arm.com>
Date:   Tue, 30 May 2017 12:18:36 +0100
From:   Will Deacon <will.deacon@....com>
To:     Sunil Kovvuri <sunil.kovvuri@...il.com>
Cc:     Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>,
        LAKML <linux-arm-kernel@...ts.infradead.org>,
        Robert Richter <robert.richter@...ium.com>, jcm@...hat.com,
        Sunil Goutham <sgoutham@...ium.com>
Subject: Re: [PATCH v2] iommu/arm-smmu-v3: Increase CMDQ drain timeout value

Hi Sunil,

On Mon, May 29, 2017 at 02:41:59PM +0530, Sunil Kovvuri wrote:
> On Fri, May 5, 2017 at 4:47 PM,  <sunil.kovvuri@...il.com> wrote:
> > From: Sunil Goutham <sgoutham@...ium.com>
> >
> > Processing queue full of TLB invalidation commands might
> > take more time on some platforms than current timeout
> > of 100us. So increased drain timeout value.
> >
> > Also now udelay time is increased exponentially for each poll.
> >
> > Signed-off-by: Sunil Goutham <sgoutham@...ium.com>

[...]

> Gentle reminder for patch review.

Sorry, I forgot to push this out. Should be on my iommu/devel branch now.

Will