linux-kernel - Re: [PATCH 1/3] KVM: MTRR: fix memory type handling if MTRR is completely disabled

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Message-ID: <55B087D4.80106@redhat.com>
Date:	Thu, 23 Jul 2015 08:21:08 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Alex Williamson <alex.williamson@...hat.com>,
	Xiao Guangrong <guangrong.xiao@...ux.intel.com>
Cc:	gleb@...nel.org, mtosatti@...hat.com, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, bsd@...hat.com, lersek@...hat.com,
	jordan.l.justen@...el.com, edk2-devel@...ts.sourceforge.net,
	Xiao Guangrong <guangrong.xiao@...el.com>
Subject: Re: [PATCH 1/3] KVM: MTRR: fix memory type handling if MTRR is
 completely disabled



On 16/07/2015 06:10, Alex Williamson wrote:
> On Thu, 2015-07-16 at 03:25 +0800, Xiao Guangrong wrote:
>> > From: Xiao Guangrong <guangrong.xiao@...el.com>
>> > 
>> > Currently code uses default memory type if MTRR is fully disabled,
>> > fix it by using UC instead
>> > 
>> > Signed-off-by: Xiao Guangrong <guangrong.xiao@...el.com>
>> > ---
> Seems to work for me.  I don't see a 0th patch, but for the series:
> 
> Tested-by: Alex Williamson <alex.williamson@...hat.com>

In fact this is the same quirk already implemented for SVM as
KVM_QUIRK_CD_NW_CLEARED, so we can reuse the bit.

Paolo
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