From: "Radim Krčmář" <rkrcmar@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: kvm <kvm@vger.kernel.org>, Joel Schopp <joel.schopp@amd.com>
Subject: Re: [RFC][PATCH] KVM: SVM: Sync g_pat with guest-written PAT value
Date: Mon, 20 Apr 2015 19:33:46 +0200 [thread overview]
Message-ID: <20150420173345.GB26478@potion.brq.redhat.com> (raw)
In-Reply-To: <553535B1.3050901@siemens.com>
2015-04-20 19:21+0200, Jan Kiszka:
> On 2015-04-20 19:16, Radim Krčmář wrote:
> > 2015-04-20 18:14+0200, Radim Krčmář:
> >> Tested-by: Radim Krčmář <rkrcmar@redhat.com>
> >
> > Uncached accesses were roughly 20x slower.
> > In case anyone wanted to reproduce, I used this as a kvm-unit-test:
> >
> > ---
| [code]
>
> 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.)
next prev parent reply other threads:[~2015-04-20 17:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-13 5:16 KVM: How does is PAT emulation supposed to work? Jan Kiszka
2015-04-13 6:58 ` [RFC][PATCH] KVM: SVM: Sync g_pat with guest-written PAT value Jan Kiszka
2015-04-17 16:59 ` Radim Krčmář
2015-04-20 16:14 ` Radim Krčmář
2015-04-20 17:16 ` Radim Krčmář
2015-04-20 17:21 ` Jan Kiszka
2015-04-20 17:33 ` Radim Krčmář [this message]
2015-04-20 17:37 ` Jan Kiszka
2015-04-20 17:45 ` Jan Kiszka
2015-04-20 18:33 ` Radim Krčmář
2015-04-20 18:41 ` Jan Kiszka
2015-04-21 12:10 ` Radim Krčmář
2015-04-21 12:11 ` Paolo Bonzini
2015-04-20 17:22 ` Radim Krčmář
2015-04-20 17:25 ` [PATCH v2] " Jan Kiszka
2015-04-20 17:35 ` Radim Krčmář
2015-04-21 11:09 ` Paolo Bonzini
2015-04-21 11:25 ` Jan Kiszka
2015-04-21 11:32 ` Paolo Bonzini
2015-04-21 11:56 ` Jan Kiszka
2015-04-21 12:12 ` Paolo Bonzini
2015-04-21 12:21 ` Radim Krčmář
2015-05-24 15:28 ` Jan Kiszka
2016-02-09 19:25 ` Jan Kiszka
2015-04-17 16:43 ` KVM: How does is PAT emulation supposed to work? Radim Krčmář
2015-04-17 17:12 ` Jan Kiszka
2015-04-17 20:28 ` Radim Krčmář
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