linux-kernel - Re: Regression when booting 5.15 as dom0 on arm64 (WAS: Re: [linux-linus test] 161829: regressions

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Message-ID: <alpine.DEB.2.21.2105110950580.5018@sstabellini-ThinkPad-T480s>
Date:   Tue, 11 May 2021 09:51:20 -0700 (PDT)
From:   Stefano Stabellini <sstabellini@...nel.org>
To:     Christoph Hellwig <hch@....de>
cc:     Stefano Stabellini <sstabellini@...nel.org>,
        Julien Grall <julien@....org>, f.fainelli@...il.com,
        "xen-devel@...ts.xenproject.org" <xen-devel@...ts.xenproject.org>,
        linux-kernel@...r.kernel.org,
        osstest service owner <osstest-admin@...project.org>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        iommu@...ts.linux-foundation.org
Subject: Re: Regression when booting 5.15 as dom0 on arm64 (WAS: Re: [linux-linus
 test] 161829: regressions - FAIL)]

On Tue, 11 May 2021, Christoph Hellwig wrote:
> On Tue, May 11, 2021 at 09:47:33AM -0700, Stefano Stabellini wrote:
> > That's a much better plan. It is also not super urgent, so maybe for now
> > we could add an explicit check for io_tlb_default_mem != NULL at the
> > beginning of xen_swiotlb_init? So that at least we can fail explicitly
> > or ignore it explicitly rather than by accident.
> 
> Fine with me.  Do you want to take over from here and test and submit
> your version?

I can do that. Can I add your signed-off-by for your original fix?