Oliver Upton c68dc1b577 KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK ... Handling the migration of TSCs correctly is difficult, in part because Linux does not provide userspace with the ability to retrieve a (TSC, realtime) clock pair for a single instant in time. In lieu of a more convenient facility, KVM can report similar information in the kvm_clock structure. Provide userspace with a host TSC & realtime pair iff the realtime clock is based on the TSC. If userspace provides KVM_SET_CLOCK with a valid realtime value, advance the KVM clock by the amount of elapsed time. Do not step the KVM clock backwards, though, as it is a monotonic oscillator. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Oliver Upton <oupton@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20210916181538.968978-5-oupton@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-10-18 14:43:44 -04:00
..
acpi	Merge branches 'pm-cpufreq', 'pm-sleep' and 'pm-em'	2021-09-10 20:26:08 +02:00
asm-generic	pci_iounmap'2: Electric Boogaloo: try to make sense of it all	2021-09-19 17:13:35 -07:00
clocksource	RISC-V: KVM: Add timer functionality	2021-10-04 16:07:16 +05:30
crypto
drm
dt-bindings	linux-watchdog 5.15-rc1 tag	2021-09-07 13:52:46 -07:00
keys
kunit
kvm	KVM: arm64: Fix PMU probe ordering	2021-09-20 12:43:34 +01:00
linux	kvm: use kvfree() in kvm_arch_free_vm()	2021-10-01 03:44:57 -04:00
math-emu
media
memory
misc
net	net: dsa: flush switchdev workqueue before tearing down CPU/DSA ports	2021-09-15 15:09:46 -07:00
pcmcia
ras
rdma
scsi
soc
sound
target
trace	Merge branch 'akpm' (patches from Andrew)	2021-09-08 12:55:35 -07:00
uapi	KVM: x86: Report host tsc and realtime values in KVM_GET_CLOCK	2021-10-18 14:43:44 -04:00
vdso
video
xen