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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