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author | Dongxiao Xu <dongxiao.xu@intel.com> | 2013-01-25 10:19:55 +0100 |
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committer | Dongxiao Xu <dongxiao.xu@intel.com> | 2013-01-25 10:19:55 +0100 |
commit | 15e64e205e121c1eb18b6a9c1953c82443e4cd5a (patch) | |
tree | c5c38470c62e0b3e45aae5e38727d55386485bc4 /stubdom | |
parent | ddddba4388aa342da48045da253155db73f2daac (diff) | |
download | xen-15e64e205e121c1eb18b6a9c1953c82443e4cd5a.tar.gz xen-15e64e205e121c1eb18b6a9c1953c82443e4cd5a.tar.bz2 xen-15e64e205e121c1eb18b6a9c1953c82443e4cd5a.zip |
nested vmx: enable VMCS shadowing feature
The current logic for handling the non-root VMREAD/VMWRITE is by
VM-Exit and emulate, which may bring certain overhead.
On new Intel platform, it introduces a new feature called VMCS
shadowing, where non-root VMREAD/VMWRITE will not trigger VM-Exit,
and the hardware will read/write the virtual VMCS instead.
This is proved to have performance improvement with the feature.
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Acked-by: Jun Nakajima <jun.nakajima@intel.com>
Acked-by Eddie Dong <eddie.dong@intel.com>
Committed-by: Jan Beulich <jbeulich@suse.com>
Diffstat (limited to 'stubdom')
0 files changed, 0 insertions, 0 deletions