From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Stefano Stabellini <sstabellini@kernel.org>
Cc: jgross@suse.com, iommu@lists.linux-foundation.org,
xen-devel@lists.xenproject.org, Rahul Singh <Rahul.Singh@arm.com>,
Christoph Hellwig <hch@lst.de>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH] swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm
Date: Fri, 29 Apr 2022 19:12:19 -0400 [thread overview]
Message-ID: <41c2483c-ab54-41be-7815-9d4a98e0249e@oracle.com> (raw)
In-Reply-To: <alpine.DEB.2.22.394.2204281548320.915916@ubuntu-linux-20-04-desktop>
On 4/28/22 6:49 PM, Stefano Stabellini wrote:
> On Thu, 28 Apr 2022, Boris Ostrovsky wrote:
>> On 4/28/22 5:49 PM, Stefano Stabellini wrote:
>>> On Thu, 28 Apr 2022, Christoph Hellwig wrote:
>>>> On Tue, Apr 26, 2022 at 04:07:45PM -0700, Stefano Stabellini wrote:
>>>>>> Reported-by: Rahul Singh <Rahul.Singh@arm.com>
>>>>>> Signed-off-by: Christoph Hellwig <hch@lst.de>
>>>>> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
>>>> Do you want to take this through the Xen tree or should I pick it up?
>>>> Either way I'd love to see some testing on x86 as well.
>>> I agree on the x86 testing. Juergen, Boris?
>>>
>>> I'd say to take this patch via the Xen tree but Juergen has just sent a
>>> Xen pull request to Linux last Saturday. Juergen do you plan to send
>>> another one? Do you have something else lined up? If not, it might be
>>> better to let Christoph pick it up.
>>
>> We don't have anything pending.
>>
>>
>> I can test it but at best tomorrow so not sure we can get this into rc5. Do
>> you consider this an urgent fix or can we wait until 5.19? Because it's a bit
>> too much IMO for rc6.
> On one hand, Linux doesn't boot on a platform without this fix. On the
> other hand, I totally see that this patch could introduce regressions on
> x86 so I think it is fair that we are careful with it.
>
> From my point of view, it might be better to wait for 5.19 and mark it
> as backport.
No problems uncovered during testing.
-boris
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next prev parent reply other threads:[~2022-04-29 23:12 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-23 17:14 [PATCH] swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm Christoph Hellwig
2022-04-26 12:42 ` Rahul Singh
2022-04-26 23:07 ` Stefano Stabellini
2022-04-28 13:27 ` Christoph Hellwig
2022-04-28 21:49 ` Stefano Stabellini
2022-04-28 22:47 ` Boris Ostrovsky
2022-04-28 22:49 ` Stefano Stabellini
2022-04-29 23:12 ` Boris Ostrovsky [this message]
2022-04-29 23:15 ` Stefano Stabellini
2022-05-11 14:13 ` Christoph Hellwig
2022-05-11 20:28 ` Stefano Stabellini
2022-05-09 6:18 ` Christoph Hellwig
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