From: Avi Kivity <avi@qumranet.com>
To: Joerg Roedel <joro@8bytes.org>
Cc: "Nakajima, Jun" <jun.nakajima@intel.com>,
kvm-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: Re: [kvm-devel] [PATCH 3/8] SVM: add module parameter to disable NestedPaging
Date: Sat, 26 Jan 2008 20:23:11 +0200 [thread overview]
Message-ID: <479B7A8F.8070308@qumranet.com> (raw)
In-Reply-To: <20080126072556.GB21476@8bytes.org>
Joerg Roedel wrote:
> Generally I see no problem with it. But at least for NPT I don't see a
> reason why someone should want to disable it on a VM basis (as far as it
> works stable). Avi, what do you think?
>
Unless there is a real-life workload that benefits from npt=0, I see no
reason to have per-vm npt control. The module parameter is helpful, for
to isolate npt problems and for development, but I don't see a need for
users to fiddle with it.
--
Any sufficiently difficult bug is indistinguishable from a feature.
next prev parent reply other threads:[~2008-01-26 18:23 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 20:53 [PATCH][RFC] SVM: Add Support for Nested Paging in AMD Fam16 CPUs Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 1/8] SVM: move feature detection to hardware setup code Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 2/8] SVM: add detection of Nested Paging feature Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 3/8] SVM: add module parameter to disable Nested Paging Joerg Roedel
2008-01-25 21:35 ` [kvm-devel] " Anthony Liguori
2008-01-25 21:35 ` Anthony Liguori
2008-01-25 22:10 ` [kvm-devel] " Joerg Roedel
2008-01-25 22:10 ` Joerg Roedel
2008-01-26 18:38 ` [kvm-devel] " Avi Kivity
2008-01-26 18:38 ` Avi Kivity
2008-01-26 1:47 ` [kvm-devel] [PATCH 3/8] SVM: add module parameter to disable NestedPaging Nakajima, Jun
2008-01-26 1:47 ` Nakajima, Jun
2008-01-26 7:25 ` [kvm-devel] " Joerg Roedel
2008-01-26 7:25 ` Joerg Roedel
2008-01-26 9:49 ` [kvm-devel] " Alexey Eremenko
2008-01-26 9:49 ` Alexey Eremenko
2008-01-26 10:06 ` [kvm-devel] " Joerg Roedel
2008-01-26 10:06 ` Joerg Roedel
2008-01-26 16:36 ` [kvm-devel] " Anthony Liguori
2008-01-26 16:36 ` Anthony Liguori
2008-01-26 18:23 ` Avi Kivity [this message]
2008-01-25 20:53 ` [PATCH 4/8] X86: export information about NPT to generic x86 code Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 21:37 ` [kvm-devel] " Anthony Liguori
2008-01-25 21:37 ` Anthony Liguori
2008-01-25 21:40 ` [kvm-devel] " Anthony Liguori
2008-01-25 21:40 ` Anthony Liguori
2008-01-27 8:40 ` [kvm-devel] " Avi Kivity
2008-01-27 8:40 ` Avi Kivity
2008-01-25 20:53 ` [PATCH 5/8] MMU: make the __nonpaging_map function generic Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 6/8] X86: export the load_pdptrs() function to modules Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 7/8] MMU: add HAP support to the KVM MMU Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-25 20:53 ` [PATCH 8/8] SVM: add support for Nested Paging Joerg Roedel
2008-01-25 20:53 ` Joerg Roedel
2008-01-27 8:52 ` [kvm-devel] " Avi Kivity
2008-01-27 8:52 ` Avi Kivity
2008-01-27 9:41 ` [kvm-devel] " Joerg Roedel
2008-01-27 9:41 ` Joerg Roedel
2008-01-27 9:51 ` [kvm-devel] " Avi Kivity
2008-01-27 9:51 ` Avi Kivity
2008-01-27 10:05 ` [kvm-devel] " Joerg Roedel
2008-01-27 10:05 ` Joerg Roedel
2008-01-27 10:24 ` [kvm-devel] " Avi Kivity
2008-01-27 10:24 ` Avi Kivity
2008-01-25 21:32 ` [kvm-devel] [PATCH][RFC] SVM: Add Support for Nested Paging in AMD Fam16 CPUs Anthony Liguori
2008-01-25 21:32 ` Anthony Liguori
2008-01-25 22:47 ` [kvm-devel] " Joerg Roedel
2008-01-25 22:47 ` Joerg Roedel
2008-01-26 1:57 ` [kvm-devel] " Nakajima, Jun
2008-01-26 1:57 ` Nakajima, Jun
2008-01-27 8:57 ` [kvm-devel] " Avi Kivity
2008-01-27 8:57 ` Avi Kivity
2008-01-27 9:51 ` [kvm-devel] " Joerg Roedel
2008-01-27 9:51 ` Joerg Roedel
2008-01-28 3:20 ` [kvm-devel] " Jeremy Fitzhardinge
2008-01-28 3:20 ` Jeremy Fitzhardinge
2008-01-28 11:08 ` [kvm-devel] " Avi Kivity
2008-01-28 11:08 ` Avi Kivity
2008-02-07 12:09 ` [kvm-devel] " Joerg Roedel
2008-02-07 12:09 ` Joerg Roedel
2008-02-10 10:35 ` [kvm-devel] " Avi Kivity
2008-02-10 10:35 ` Avi Kivity
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