On 3/15/19 11:23 AM, Andrew Cooper wrote: > Taking svm_feature_flags by pointer and using test_bit() results in generated > code which loads svm_feature_flags into a 32bit register, then does a bitwise > operation. > > The logic can be expressed in terms of a straight bitwise operation, resulting > in the following minor improvement. > > add/remove: 0/0 grow/shrink: 0/4 up/down: 0/-136 (-136) > Function old new delta > svm_nested_features_on_efer_update 281 273 -8 > svm_create_vmcb 1404 1388 -16 > svm_vmexit_handler 6271 6239 -32 > start_svm 818 738 -80 > Total: Before=3347569, After=3347433, chg -0.00% > > Signed-off-by: Andrew Cooper <andrew.coop...@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracel.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
