linux-kernel - Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures

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Message-ID: <a2825beac032fd6a76838164d4e2753d30305897.camel@redhat.com>
Date:   Thu, 29 Sep 2022 19:16:29 +0300
From:   Maxim Levitsky <mlevitsk@...hat.com>
To:     Keith Busch <kbusch@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>, qemu-devel@...gnu.org,
        kvm@...r.kernel.org
Subject: Re: Commit 'iomap: add support for dma aligned direct-io' causes
 qemu/KVM boot failures

On Thu, 2022-09-29 at 09:48 -0600, Keith Busch wrote:
> I am aware, and I've submitted the fix to qemu here:
> 
>   https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html
> 


Thanks for quick response!

Question is though, isn't this an kernel ABI breakage?

(I myself don't care, I would be happy to patch my qemu), 

but I afraid that this will break *lots* of users that only updated the kernel
and not the qemu.

What do you think?

Best regards,
	Maxim Levitsky