Paolo Bonzini 8171cd6880 KVM: x86: use raw clock values consistently ... Commit 53fafdbb8b ("KVM: x86: switch KVMCLOCK base to monotonic raw clock") changed kvmclock to use tkr_raw instead of tkr_mono. However, the default kvmclock_offset for the VM was still based on the monotonic clock and, if the raw clock drifted enough from the monotonic clock, this could cause a negative system_time to be written to the guest's struct pvclock. RHEL5 does not like it and (if it boots fast enough to observe a negative time value) it hangs. There is another thing to be careful about: getboottime64 returns the host boot time with tkr_mono frequency, and subtracting the tkr_raw-based kvmclock value will cause the wallclock to be off if tkr_raw drifts from tkr_mono. To avoid this, compute the wallclock delta from the current time instead of being clever and using getboottime64. Fixes: 53fafdbb8b ("KVM: x86: switch KVMCLOCK base to monotonic raw clock") Cc: stable@vger.kernel.org Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2020-02-05 15:17:45 +01:00
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boot	Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 12:46:42 -08:00
configs
crypto
entry	threads-v5.6	2020-01-29 19:38:34 -08:00
events	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 09:44:15 -08:00
hyperv
ia32
include	kvm: i8254: Deactivate APICv when using in-kernel PIT re-injection mode.	2020-02-05 15:17:44 +01:00
kernel	MPX requires recompiling applications, which requires compiler support.	2020-01-30 16:11:50 -08:00
kvm	KVM: x86: use raw clock values consistently	2020-02-05 15:17:45 +01:00
lib	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 12:28:06 -08:00
math-emu
mm	ARM: Cleanups and corner case fixes	2020-01-31 09:30:41 -08:00
net
oprofile
pci	Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 09:03:40 -08:00
platform	drm pull for 5.6-rc1	2020-01-30 08:04:01 -08:00
power
purgatory
ras
realmode
tools
um
video
xen	Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2020-01-28 12:11:23 -08:00
.gitignore
Kbuild
Kconfig	MPX requires recompiling applications, which requires compiler support.	2020-01-30 16:11:50 -08:00
Kconfig.cpu
Kconfig.debug
Makefile
Makefile_32.cpu
Makefile.um