linux-kernel - Re: [PATCH 2/4] x86: always initialize xen-swiotlb when xen-pcifront is enabling

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Message-ID: <20230612064738.GA19518@lst.de>
Date:   Mon, 12 Jun 2023 08:47:38 +0200
From:   Christoph Hellwig <hch@....de>
To:     Juergen Gross <jgross@...e.com>
Cc:     Christoph Hellwig <hch@....de>,
        Marek Marczykowski-Górecki 
        <marmarek@...isiblethingslab.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, Ben Skeggs <bskeggs@...hat.com>,
        Karol Herbst <kherbst@...hat.com>,
        Lyude Paul <lyude@...hat.com>, xen-devel@...ts.xenproject.org,
        iommu@...ts.linux.dev, linux-kernel@...r.kernel.org,
        nouveau@...ts.freedesktop.org
Subject: Re: [PATCH 2/4] x86: always initialize xen-swiotlb when
 xen-pcifront is enabling

On Fri, Jun 09, 2023 at 05:38:28PM +0200, Juergen Gross wrote:
>>> guest started with e820_host=1 even if no PCI passthrough was planned.
>>> But this should be rather rare (at least I hope so).
>>
>> So is this an ACK for the patch and can we go ahead with it?
>
> As long as above mentioned check of the E820 map is done, yes.
>
> If you want I can send a diff to be folded into your patch on Monday.

Yes, that would be great!