[PATCH v1 0/3] KVM: arm64: pkvm: Extend hypervisor entering tracing reasons

[Vincent Donnefort <vdonnefort@google.com>]

This series make the hyp_enter event more detailed by adding a "from="
field and by using the ESR class when relevant. This is interesting for
example to know when the guest has exited for an HVC.

Speaking of HVCs, protected VMs issue an HVC to share memory with the
host. Without this memory sharing, impossible to get logs. So if for any
reason it fails, debugging is quite cumbersome. Add a specific guest_hvc
event that will give even more details than hyp_enter provides.

Also, add a host_hvc event, so that the host gets similar coverage a
protected VM does.

Vincent Donnefort (3):
  KVM: arm64: Add ESR class to the hyp_enter hyp event
  KVM: arm64: Add guest_hvc hyp event
  KVM: arm64: Add host_hvc hyp event

 arch/arm64/include/asm/kvm_hypevents.h | 50 ++++++++++++++++++++-----
 arch/arm64/kvm/hyp/nvhe/hyp-main.c     |  9 ++---
 arch/arm64/kvm/hyp/nvhe/pkvm.c         |  7 +++-
 arch/arm64/kvm/hyp/nvhe/psci-relay.c   |  2 +-
 arch/arm64/kvm/hyp/nvhe/switch.c       |  6 ++-
 arch/arm64/kvm/hyp_trace.c             | 52 ++++++++++++++++++++------
 6 files changed, 96 insertions(+), 30 deletions(-)


base-commit: a90ee4305c4a5df72c11b31dacfdc76e00fcf78a
-- 
2.56.0.385.gd3acb90ef8-goog