qemu/hw/i386/kvm
Vitaly Kuznetsov 8700a98443 target/i386: always create kvmclock device
QEMU's kvmclock device is only created when KVM PV feature bits for
kvmclock (KVM_FEATURE_CLOCKSOURCE/KVM_FEATURE_CLOCKSOURCE2) are
exposed to the guest. With 'kvm=off' cpu flag the device is not
created and we don't call KVM_GET_CLOCK/KVM_SET_CLOCK upon migration.
It was reported that without these call at least Hyper-V TSC page
clocksouce (which can be enabled independently) gets broken after
migration.

Switch to creating kvmclock QEMU device unconditionally, it seems
to always make sense to call KVM_GET_CLOCK/KVM_SET_CLOCK on migration.
Use KVM_CAP_ADJUST_CLOCK check instead of CPUID feature bits.

Reported-by: Antoine Damhet <antoine.damhet@blade-group.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200922151934.899555-1-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-09-30 19:11:36 +02:00
..
apic.c qdev: Unrealize must not fail 2020-05-15 07:08:14 +02:00
clock.c target/i386: always create kvmclock device 2020-09-30 19:11:36 +02:00
i8254.c qapi: Restrict LostTickPolicy enum to machine code 2020-09-29 15:41:35 +02:00
i8259.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
ioapic.c hw/i386/kvm/ioapic.c: fix typo in error message 2020-09-01 08:59:34 +02:00
meson.build meson: convert hw/arch* 2020-08-21 06:30:33 -04:00