linux-kernel - [PATCH v2 0/3] Collect guest/host statistics during the redirected traps

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Message-Id: <20241224-kvm_guest_stat-v2-0-08a77ac36b02@rivosinc.com>
Date: Tue, 24 Dec 2024 13:04:52 -0800
From: Atish Patra <atishp@...osinc.com>
To: Anup Patel <anup@...infault.org>, Atish Patra <atishp@...shpatra.org>, 
 Paul Walmsley <paul.walmsley@...ive.com>, 
 Palmer Dabbelt <palmer@...belt.com>
Cc: kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org, 
 linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Atish Patra <atishp@...osinc.com>, Quan Zhou <zhouquan@...as.ac.cn>
Subject: [PATCH v2 0/3] Collect guest/host statistics during the redirected
 traps

As discussed in the patch[1], this series adds the host statistics for
traps that are redirected to the guest. Since there are 1-1 mapping for
firmware counters as well, this series enables those so that the guest
can collect information about these exits via perf if required.

I have included the patch[1] as well in this series as it has not been
applied and there will be likely conflicts while merging both.

Signed-off-by: Atish Patra <atishp@...osinc.com>
---
Changes in v2:
- Improved commit messages in PATCH3. 
- Added RB tags.
- Link to v1: https://lore.kernel.org/r/20241212-kvm_guest_stat-v1-0-d1a6d0c862d5@rivosinc.com

---
Atish Patra (2):
      RISC-V: KVM: Update firmware counters for various events
      RISC-V: KVM: Add new exit statstics for redirected traps

Quan Zhou (1):
      RISC-V: KVM: Redirect instruction access fault trap to guest

 arch/riscv/include/asm/kvm_host.h |  5 +++++
 arch/riscv/kvm/vcpu.c             |  7 ++++++-
 arch/riscv/kvm/vcpu_exit.c        | 37 +++++++++++++++++++++++++++++++++----
 3 files changed, 44 insertions(+), 5 deletions(-)
---
base-commit: fac04efc5c793dccbd07e2d59af9f90b7fc0dca4
change-id: 20241212-kvm_guest_stat-bc469665b410
--
Regards,
Atish patra