linux-kernel - Re: [REGRESSION 5.0.x] Windows XP broken on KVM

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Message-ID: <20190423202317.GA15182@kroah.com>
Date:   Tue, 23 Apr 2019 22:23:17 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     Takashi Iwai <tiwai@...e.de>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Jiri Slaby <jslaby@...e.cz>, linux-kernel@...r.kernel.org
Subject: Re: [REGRESSION 5.0.x] Windows XP broken on KVM

On Thu, Apr 18, 2019 at 09:56:02AM +0200, Paolo Bonzini wrote:
> On 18/04/19 09:38, Takashi Iwai wrote:
> > Hi,
> > 
> > we've got a regression report on the recent 5.0.x kernel, starting
> > from 5.0.6, where Windows XP can't boot on KVM any longer.
> > 
> > The culprit seems to be the patch
> >    KVM: x86: update %rip after emulating IO
> > with the upstream commit 45def77ebf79e2e8942b89ed79294d97ce914fa0.
> > Reverting this alone fixed the problem.
> > 
> > The report is found at openSUSE bugzilla:
> >   https://bugzilla.suse.com/show_bug.cgi?id=1132694
> > 
> > Is there already a followup fix?  If not, we need to revert it from
> > stable, at least.
> 
> No, it's the first time I hear this and I actually test Windows XP
> before every pull request I send to Linus...  I'll download 5.0.x and
> test it there.

Any further ideas about this?

thanks,

greg k-h