[PW_SID:1141925] RISC-V: KVM: Add PMU event filter support by linux-riscv-bot · Pull Request #2428 · linux-riscv/linux

linux-riscv-bot · 2026-08-07T06:50:08Z

PR for series 1141925 applied to workflow__riscv__fixes

Name: RISC-V: KVM: Add PMU event filter support
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1141925
Version: 2

Allow userspace to restrict which SBI PMU events a guest is permitted to program via the new VM ioctl KVM_SET_PMU_EVENT_FILTER. It takes a struct kvm_pmu_event_filter whose events[] array holds SBI PMU event indices encoded as (type << 16) | code. The action field selects ALLOW (only listed events may be programmed) or DENY (listed events are rejected); nevents == 0 clears any active filter. The filter is enforced in kvm_riscv_vcpu_pmu_ctr_cfg_match(), where a disallowed event fails configuration with SBI_ERR_NOT_SUPPORTED. It governs new counter configuration only and is not retroactive. The filter lives in struct kvm_arch, read via SRCU on the vCPU run path and replaced under kvm->lock with synchronize_srcu_expedited(). Event indices are masked to their valid bits before comparison, so reserved high bits cannot bypass a DENY filter. Advertise the feature with KVM_CAP_PMU_EVENT_FILTER. Assisted-by: YuanSheng:deepseek-v4-pro Co-developed-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Yuhang.chen <yhchen312@gmail.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Add a selftest that exercises KVM_SET_PMU_EVENT_FILTER on RISC-V. The guest programs the CPU cycles and instructions SBI PMU events through SBI_EXT_PMU_COUNTER_CFG_MATCH while the host installs filters with the ALLOW and DENY actions, asserting that disallowed events return SBI_ERR_NOT_SUPPORTED and allowed events succeed. The test also validates ioctl argument rejection: an invalid action, a non-zero flags field, and an over-large nevents value are each expected to fail with -EINVAL or -E2BIG. A baseline run verifies PMU availability and the test skips (KSFT_SKIP) when PMU or the filter capability is absent. Assisted-by: YuanSheng:deepseek-v4-pro Co-developed-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn> Signed-off-by: Yuhang.chen <yhchen312@gmail.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-08-07T07:14:35Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 117.55 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:33:49Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1152.23 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:57:50Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1438.98 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:58:11Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.99 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:58:34Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 21.54 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:58:37Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.15 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T07:59:58Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 78.78 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:00:00Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.85 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:00:03Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
kdoc
Desc: Detects for kdoc errors
Duration: 0.72 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:00:05Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
module-param
Desc: Detect module_param changes
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:00:07Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.22 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:00:09Z

Patch 1: "[v2,1/2] RISC-V: KVM: Add PMU event filter support"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:02:21Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 116.61 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:20:48Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1105.36 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:44:12Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1402.79 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:44:34Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 19.72 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:44:56Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 21.20 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:45:00Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.86 seconds
Result: WARNING
Output:

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#42: 
new file mode 100644

total: 0 errors, 1 warnings, 0 checks, 206 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 4cfe551cb7a6 ("RISC-V: KVM: selftests: Add PMU event filter test") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT CAMELCASE COMMIT_LOG_LONG_LINE GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 1 warnings, 0 checks, 206 lines checked
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?

linux-riscv-bot · 2026-08-07T08:46:21Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 79.36 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:46:23Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.22 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:46:25Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
kdoc
Desc: Detects for kdoc errors
Duration: 0.74 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:46:27Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
module-param
Desc: Detect module_param changes
Duration: 0.63 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:46:29Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.21 seconds
Result: PASS

linux-riscv-bot · 2026-08-07T08:46:31Z

Patch 2: "[v2,2/2] RISC-V: KVM: selftests: Add PMU event filter test"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.25 seconds
Result: PASS

Linux RISC-V bot and others added 3 commits August 7, 2026 03:32

Adding CI files

abf8962

linux-riscv-bot force-pushed the workflow__riscv__fixes branch from abf8962 to 9fa746d Compare August 8, 2026 18:30

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