Patches 1 and 2 provide a 30% speed improvement by avoiding pointless writes to CR0, CR4 and EFER. Patches 3 to 7 revamp computation of the result of "twice" tests; patches 8 to 11 revamp computation of the result of large page accesses. The resulting code is more modular and easier to understand. Patch 12 avoids spending time on tests that fail setting CR4. It also introduces infrastructure for restricting tests in the future based on the command line. Patch 13 provides a small convenience. Paolo Paolo Bonzini (13): x86: access: move PDPTE patching to set_cr4_smep x86: access: optimize CR0/CR4/EFER writes x86: access: change flags from array to bitmask x86: access: add flags local variable x86: access: move pde_valid test earlier x86: access: introduce boolean flags for page permissions x86: access: extract ac_emulate_access x86: access: cleanup pde_valid/pte_valid x86: access: extract ac_test_permissions x86: access: move accessed later x86: access: remove leaf argument to ac_test_permissions x86: access: only check CR4 exceptions once x86: access: print progress even in non-verbose mode x86/access.c | 632 ++++++++++++++++++++++++++++++----------------------------- 1 file changed, 324 insertions(+), 308 deletions(-) -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
