Anton Romanov 3a55f72924 kvm: x86: Disable KVM_HC_CLOCK_PAIRING if tsc is in always catchup mode
If vcpu has tsc_always_catchup set each request updates pvclock data.
KVM_HC_CLOCK_PAIRING consumers such as ptp_kvm_x86 rely on tsc read on
host's side and do hypercall inside pvclock_read_retry loop leading to
infinite loop in such situation.

v3:
    Removed warn
    Changed return code to KVM_EFAULT
v2:
    Added warn

Signed-off-by: Anton Romanov <romanton@google.com>
Message-Id: <20220216182653.506850-1-romanton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-02-17 09:52:50 -05:00
..
2022-01-19 11:15:19 +02:00
2022-01-16 15:53:00 +02:00
2021-11-01 21:17:39 -07:00
2022-01-23 06:20:44 +02:00
2021-12-11 09:09:45 +01:00