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Subject: Re: [REGRESSION 5.0.x] Windows XP broken on KVM
To:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Takashi Iwai <tiwai@suse.de>
Cc:     Paolo Bonzini <pbonzini@redhat.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Jiri Slaby <jslaby@suse.cz>, linux-kernel@vger.kernel.org
References: <s5hy347pxtf.wl-tiwai@suse.de> <20190418075328.GA19532@kroah.com>
From:   Harald Arnesen <harald@skogtun.org>
Message-ID: <110c1a56-da41-25b6-7901-ee1c5a90f937@skogtun.org>
Date:   Thu, 18 Apr 2019 23:49:32 +0200
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Greg Kroah-Hartman [18.04.2019 09:53]:

> On Thu, Apr 18, 2019 at 09:38:52AM +0200, 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.
> 
> Is this also a problem in 5.1-rc5?

My previously installed Windows XP boots and runs fine in 5.1-rc5.
-- 
Hilsen Harald