linux-kernel - Re: [PATCH] iommu/vt-d: Fix scatterlist offset handling

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Message-ID: <a135090f-27e2-cf69-b3a7-c9d0e101bf07@arm.com>
Date:   Thu, 28 Sep 2017 17:59:11 +0100
From:   Robin Murphy <robin.murphy@....com>
To:     "Raj, Ashok" <ashok.raj@...el.com>,
        Casey Leedom <leedom@...lsio.com>
Cc:     "joro@...tes.org" <joro@...tes.org>,
        "dwmw2@...radead.org" <dwmw2@...radead.org>,
        Harsh Jain <Harsh@...lsio.com>,
        "herbert@...dor.apana.org.au" <herbert@...dor.apana.org.au>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Michael Werner <werner@...lsio.com>,
        Atul Gupta <atul.gupta@...lsio.com>
Subject: Re: [PATCH] iommu/vt-d: Fix scatterlist offset handling

On 28/09/17 14:29, Raj, Ashok wrote:
> Hi Casey
> 
> On Thu, Sep 28, 2017 at 04:17:59PM +0000, Casey Leedom wrote:
>>   Thanks Robin.  Harsh can certainly test your latest patch as soon as he's
>> back in the office tomorrow morning India time.  If your patch works and is
>> accepted, it sounds like the commit would be important enough to consider
>> backporting into various Long-Term Support releases and the affected
>> distributions.  What's the procedure for nominating a commit for LTS inclusion?

I tend to leave stable decisions up to Joerg as the subsystem
maintainer, particularly when it's code outside my usual areas of
familiarity. FWIW, from a real dig through the history, the fragile
logic seems to date from the 2.6 days, having snuck in with b536d24d212c
("intel-iommu: Clean up intel_map_sg(), remove domain_page_mapping()")

> its documented in Documentation/process/submitting-patches
> 
> I didn't see a new patch fly by.. Robin, could you send that over?

I hope our email server hasn't got blacklisted again... Said patch is
the top of this very thread we're replying on[1] - you were definitely
on cc :(

Robin.

[1]:https://lists.linuxfoundation.org/pipermail/iommu/2017-September/024371.html