From mboxrd@z Thu Jan  1 00:00:00 1970
From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Subject: Re: [RFC][PATCH] KVM: SVM: Sync g_pat with guest-written PAT value
Date: Mon, 20 Apr 2015 19:33:46 +0200
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Cc: kvm <kvm@vger.kernel.org>, Joel Schopp <joel.schopp@amd.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
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2015-04-20 19:21+0200, Jan Kiszka:
> On 2015-04-20 19:16, Radim Kr=C4=8Dm=C3=A1=C5=99 wrote:
> > 2015-04-20 18:14+0200, Radim Kr=C4=8Dm=C3=A1=C5=99:
> >> Tested-by: Radim Kr=C4=8Dm=C3=A1=C5=99 <rkrcmar@redhat.com>
> >=20
> > Uncached accesses were roughly 20x slower.
> > In case anyone wanted to reproduce, I used this as a kvm-unit-test:
> >=20
> > ---
| [code]
>=20
> Great, thanks. Will you push it to the unit tests? Could raise
> motivations to fix the !NPT/EPT case.

It can't be included in `run_tests.sh`, because we intenionally ignore
PAT for normal RAM on VMX and the test does "fail" ...

I'll think how to make the test use fool-proof first, and also look how
to fix the !NPT/EPT without affecting the case we care about too much.
(And if we can do a similar trick with NPT.)