]> git.baikalelectronics.ru Git - kernel.git/commit
projects / kernel.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: 6fa1d55) | patch
x86/xen/time: Set the X86_FEATURE_TSC_KNOWN_FREQ flag in xen_tsc_khz()
authorHayato Ohhashi <o8@vmm.dev>
Tue, 21 Jul 2020 16:12:31 +0000 (16:12 +0000)
committerIngo Molnar <mingo@kernel.org>
Sat, 25 Jul 2020 13:49:41 +0000 (15:49 +0200)
commitae1f36b4320349d7b1a47dab3fcfc739487f2889
treeffbc8924e513eb3f801698cea48b127c8f64839ftree | snapshot
parent6fa1d5582cd9efb9ae5f4ba024d32ce4d2e2acb9commit | diff
x86/xen/time: Set the X86_FEATURE_TSC_KNOWN_FREQ flag in xen_tsc_khz()

If the TSC frequency is known from the pvclock page,
the TSC frequency does not need to be recalibrated.

We can avoid recalibration by setting X86_FEATURE_TSC_KNOWN_FREQ.

Signed-off-by: Hayato Ohhashi <o8@vmm.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/20200721161231.6019-1-o8@vmm.dev
arch/x86/xen/time.c diff | blob | history
Linux Kernel Source Tree.