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From: Peter Xu <peterx@redhat.com>
To: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Linux IOMMU Mailing List <iommu@lists.linux-foundation.org>,
	dave.jiang@intel.com
Subject: Re: VT-d deadlock issue on device_domain_lock and iommu lock (5.2-rc5)
Date: Fri, 21 Jun 2019 10:30:20 +0800	[thread overview]
Message-ID: <20190621023020.GA9371@xz-x1> (raw)
In-Reply-To: <de430ed1-a9f0-6970-a3b3-682fb3dbd8ac@linux.intel.com>

On Fri, Jun 21, 2019 at 09:58:28AM +0800, Lu Baolu wrote:
> Hi Peter,
> 
> I agree with you that 7560cc3ca7d9 ("iommu/vt-d: Fix lock inversion between
> iommu->lock and device_domain_lock") isn't a good fix. There
> is also another thread, https://lkml.org/lkml/2019/6/18/996, which
> reported this.
> 
> I think we can revert this patch now. I will try to reproduce the
> original issue and try to find a new fix.
> 
> Can you please submit the revert patch?

Sure, I'll post a formal patch soon.  Thanks,

-- 
Peter Xu
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

      reply	other threads:[~2019-06-21  2:30 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-20 10:44 VT-d deadlock issue on device_domain_lock and iommu lock (5.2-rc5) Peter Xu
2019-06-21  1:58 ` Lu Baolu
2019-06-21  2:30   ` Peter Xu [this message]

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