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Date:   Mon, 8 Feb 2021 13:43:23 +0100
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Nadav Amit <namit@vmware.com>
Cc:     Lu Baolu <baolu.lu@linux.intel.com>,
        David Woodhouse <dwmw2@infradead.org>,
        Joerg Roedel <joro@8bytes.org>,
        "jroedel@suse.de" <jroedel@suse.de>, Will Deacon <will@kernel.org>,
        stable <stable@vger.kernel.org>
Subject: Re: FAILED: patch "[PATCH] iommu/vt-d: Do not use flush-queue when
 caching-mode is on" failed to apply to 5.10-stable tree
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On Fri, Feb 05, 2021 at 06:29:27PM +0000, Nadav Amit wrote:
> > On Feb 5, 2021, at 12:54 AM, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote:
> > 
> > On Thu, Feb 04, 2021 at 06:04:13PM +0000, Nadav Amit wrote:
> >> Backporting requires to disable strict during initialization. Lu, can
> >> you ack this patch?
> >> 
> > This works for 5.10, thanks!  But what about 4.9, 4.14, 4.19, and 5.4?
> > Those also need this change, right?
> 
> Thanks for taking the patch.
> 
> Yes, older kernels need to be patched too. I wanted Lu to ack the 5.10 patch
> first.
> 
> For 5.4 and older kernels, the patch is fundamentally the same as the one
> for 5.10. Yet the patch that I sent for 5.10 does not apply cleanly, so
> please use the following patch.
> 
> Please let me know if there is any problem. 
> 

That worked, thanks.

greg k-h