LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: "Joerg Roedel" <joerg.roedel@amd.com>
To: "Avi Kivity" <avi@qumranet.com>,
	kvm-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org
Subject: [PATCH][RFC] SVM: Add Support for Nested Paging in AMD Fam16 CPUs
Date: Fri, 25 Jan 2008 21:53:05 +0100	[thread overview]
Message-ID: <1201294393-22613-1-git-send-email-joerg.roedel@amd.com> (raw)

Hi,                                                                                                                              

here is the first release of patches for KVM to support the Nested Paging (NPT)
feature of AMD QuadCore CPUs for comments and public testing. This feature
improves the guest performance significantly. I measured an improvement of
around 17% using kernbench in my first tests.

This patch series is basically tested with Linux guests (32 bit legacy
paging, 32 bit PAE paging and 64 bit Long Mode). Also tested with Windows Vista
32 bit and 64 bit. All these guests ran successfully with these patches. The
patch series only enables NPT for 64 bit Linux hosts at the moment.

Please give these patches a good and deep testing. I hope we have this patchset
ready for merging soon.

Joerg

Here is the diffstat:

 arch/x86/kvm/mmu.c         |   81 +++++++++++++++++++++++++++++++++++---
 arch/x86/kvm/mmu.h         |    6 +++
 arch/x86/kvm/svm.c         |   94 +++++++++++++++++++++++++++++++++++++++++--
 arch/x86/kvm/vmx.c         |    7 +++
 arch/x86/kvm/x86.c         |    1 +
 include/asm-x86/kvm_host.h |    4 ++
 6 files changed, 182 insertions(+), 11 deletions(-)





             reply	other threads:[~2008-01-25 21:18 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-25 20:53 Joerg Roedel [this message]
2008-01-25 20:53 ` [PATCH 1/8] SVM: move feature detection to hardware setup code Joerg Roedel
2008-01-25 20:53 ` [PATCH 2/8] SVM: add detection of Nested Paging feature 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 22:10     ` Joerg Roedel
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  7:25     ` Joerg Roedel
2008-01-26  9:49       ` Alexey Eremenko
2008-01-26 10:06         ` Joerg Roedel
2008-01-26 16:36         ` Anthony Liguori
2008-01-26 18:23       ` Avi Kivity
2008-01-25 20:53 ` [PATCH 4/8] X86: export information about NPT to generic x86 code Joerg Roedel
2008-01-25 21:37   ` [kvm-devel] " Anthony Liguori
2008-01-25 21:40     ` Anthony Liguori
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 ` [PATCH 6/8] X86: export the load_pdptrs() function to modules 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 ` [PATCH 8/8] SVM: add support for Nested Paging Joerg Roedel
2008-01-27  8:52   ` [kvm-devel] " Avi Kivity
2008-01-27  9:41     ` Joerg Roedel
2008-01-27  9:51       ` Avi Kivity
2008-01-27 10:05         ` Joerg Roedel
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 22:47   ` Joerg Roedel
2008-01-26  1:57 ` Nakajima, Jun
2008-01-27  8:57 ` Avi Kivity
2008-01-27  9:51   ` Joerg Roedel
2008-01-28  3:20   ` Jeremy Fitzhardinge
2008-01-28 11:08     ` Avi Kivity
2008-02-07 12:09   ` Joerg Roedel
2008-02-10 10:35     ` Avi Kivity

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1201294393-22613-1-git-send-email-joerg.roedel@amd.com \
    --to=joerg.roedel@amd.com \
    --cc=avi@qumranet.com \
    --cc=kvm-devel@lists.sourceforge.net \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: [PATCH][RFC] SVM: Add Support for Nested Paging in AMD Fam16 CPUs' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).