linux-kernel - Re: [PATCH] x86/ioperm: add new paravirt function update_io

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Date:   Wed, 19 Feb 2020 10:22:45 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Jürgen Groß <jgross@...e.com>,
        xen-devel@...ts.xenproject.org, x86@...nel.org,
        linux-kernel@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Cc:     Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>,
        Thomas Hellstrom <thellstrom@...are.com>,
        "VMware\, Inc." <pv-drivers@...are.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Stefano Stabellini <sstabellini@...nel.org>,
        stable@...r.kernel.org
Subject: Re: [PATCH] x86/ioperm: add new paravirt function update_io_bitmap

Jürgen Groß <jgross@...e.com> writes:
> On 18.02.20 22:03, Thomas Gleixner wrote:
>> BTW, why isn't stuff like this not catched during next or at least
>> before the final release? Is nothing running CI on upstream with all
>> that XEN muck active?
>
> This problem showed up by not being able to start the X server (probably
> not the freshest one) in dom0 on a moderate aged AMD system.
>
> Our CI tests tend do be more text console based for dom0.

tools/testing/selftests/x86/io[perm|pl] should have caught that as well,
right? If not, we need to fix the selftests.

Thanks,

        tglx