mbox series

[v1,0/2] Add arm64 vcpu exit reasons and tracepoint

Message ID 20220317005630.3666572-1-jingzhangos@google.com (mailing list archive)
Headers show
Series Add arm64 vcpu exit reasons and tracepoint | expand

Message

Jing Zhang March 17, 2022, 12:56 a.m. UTC 
This patch adds a field in arm64 arch vcpu structure to save the last exit
reason, which could be poked by the hook provided by the tracepoint.
A previous solution adding vcpu exits stats was discussed here:
https://lore.kernel.org/all/20210922010851.2312845-3-jingzhangos@google.com.
As Marc suggested, a tracepoint is preferred for those heavy arm64 vcpu exit
reason stats.

Jing Zhang (2):
  KVM: arm64: Add arch specific exit reasons
  KVM: arm64: Add debug tracepoint for vcpu exits

 arch/arm64/include/asm/kvm_emulate.h |  5 +++
 arch/arm64/include/asm/kvm_host.h    | 36 ++++++++++++++++
 arch/arm64/kvm/arm.c                 |  2 +
 arch/arm64/kvm/handle_exit.c         | 62 +++++++++++++++++++++++++---
 arch/arm64/kvm/mmu.c                 |  4 ++
 arch/arm64/kvm/sys_regs.c            |  6 +++
 arch/arm64/kvm/trace_arm.h           |  8 ++++
 7 files changed, 118 insertions(+), 5 deletions(-)


base-commit: 9872e6bc08d6ef6de79717ff6bbff0f297c134ef