linux-kernel - [PATCH 0/7 v3] Rework of msrpm optimization and additional fixes for nested svm

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Date:	Mon, 1 Mar 2010 15:34:33 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>
CC:	Alexander Graf <agraf@...e.de>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/7 v3] Rework of msrpm optimization and additional fixes for nested svm

Hi,

this is the third round of the msrpm merge optimization patches for
nested svm.  The change to the previous post it the introduction of an
direc_access_msrs list which contains all msrs that a guest might
directly access. This list is used to initialize the msrpm bitmaps and
the msrpm_offset table used for merging two tables. This optimization
more than doubles the performance of kernel compiles in the nested guest
using nested-shadow paging.
The other random fixes in this set were not changed to the last version
of this set. Patch 1/7 is new because it was forgotten in the last post.

Thanks,

	Joerg

Diffstat:

 arch/x86/kvm/svm.c |  259 +++++++++++++++++++++++++++++++++++++++-------------
 1 files changed, 195 insertions(+), 64 deletions(-)

Shortlog:

Joerg Roedel (7):
      KVM: SVM: Return correct values in nested_svm_exit_handled_msr
      KVM: SVM: Move msrpm offset calculation to seperate function
      KVM: SVM: Introduce direct access msr list
      KVM: SVM: Optimize nested svm msrpm merging
      KVM: SVM: Use svm_msrpm_offset in nested_svm_exit_handled_msr
      KVM; SVM: Add correct handling of nested iopm
      KVM: SVM: Ignore lower 12 bit of nested msrpm_pa

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