KVM backports to 5.10

This patch series backports a few VM preemption_status, steal_time and PV TLB flushing fixes to 5.10 stable kernel.

Most of the changes backport cleanly except i had to work around a few becauseof missing support/APIs in 5.10 kernel. I have captured those in the changelog as well in the individual patches.

Changelog
- Use mark_page_dirty_in_slot api without kvm argument (KVM: x86: Fix recording of guest steal time / preempted status)
- Avoid checking for xen_msr and SEV-ES conditions (KVM: x86:
do not set st->preempted when going back to user space)
- Use VCPU_STAT macro to expose preemption_reported and preemption_other fields (KVM: x86: do not report a vCPU as preempted outside instruction boundaries)

David Woodhouse (2):
KVM: x86: Fix recording of guest steal time / preempted status
KVM: Fix steal time asm constraints

Lai Jiangshan (1):
KVM: x86: Ensure PV TLB flush tracepoint reflects KVM behavior

Paolo Bonzini (5):
KVM: x86: do not set st->preempted when going back to user space
KVM: x86: do not report a vCPU as preempted outside instruction
boundaries
KVM: x86: revalidate steal time cache if MSR value changes
KVM: x86: do not report preemption if the steal time cache is stale
KVM: x86: move guest_pv_has out of user_access section

Sean Christopherson (1):
KVM: x86: Remove obsolete disabling of page faults in

    kvm_arch_vcpu_put()

 arch/x86/include/asm/kvm_host.h |   5 +-
 arch/x86/kvm/svm/svm.c          |   2 +
 arch/x86/kvm/vmx/vmx.c          |   1 +
 arch/x86/kvm/x86.c              | 164 ++++++++++++++++++++++----------
 4 files changed, 122 insertions(+), 50 deletions(-)

2.37.1