This patchset, based on earlier work by Jeremy Fitzhardinge, implements paravirtual clock vsyscall support.
It should be possible to implement Xen support relatively easily. It reduces clock_gettime from 500 cycles to 200 cycles on my testbox. Please review. >From my POV, this is ready to merge. v3: - fix PVCLOCK_VSYSCALL_NR_PAGES definition (glommer) - fold flags race fix into pvclock refactoring (avi) - remove CONFIG_PARAVIRT_CLOCK_VSYSCALL (glommer) - add reference to tsc.c from vclock_gettime.c about cycle_last rationale (glommer) - fix whitespace damage (glommer) v2: - Do not allow visibility of different <system_timestamp, tsc_timestamp> tuples. - Add option to disable vsyscall. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
