[PW_SID:1127240] RISC-V IOMMU HPM support by linux-riscv-bot · Pull Request #2280 · linux-riscv/linux

linux-riscv-bot · 2026-07-14T09:08:13Z

PR for series 1127240 applied to workflow__riscv__fixes

Name: RISC-V IOMMU HPM support
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1127240
Version: 4

Add a new driver to support the RISC-V IOMMU PMU. This is an auxiliary device driver created by the parent RISC-V IOMMU driver. The RISC-V IOMMU PMU separates the cycle counter from the event counters. The cycle counter is not associated with iohpmevt0, so a software-defined cycle event is required for the perf subsystem. The number and width of the counters are hardware-implemented and must be detected at runtime. The performance monitor provides counters with filtering support to collect events for specific device ID/process ID, or GSCID/PSCID. According to RISC-V IOMMU specification Chapter 6: Whether an 8 byte access to an IOMMU register is single-copy atomic is UNSPECIFIED. Use two separate 4 byte accesses for hardware compatibility. PMU-related definitions are moved into the perf driver, where they are used exclusively. Suggested-by: David Laight <david.laight.linux@gmail.com> Suggested-by: Guo Ren <guoren@kernel.org> Link: https://lore.kernel.org/linux-riscv/20260618143634.7f3dd6c5@pumpkin/ Signed-off-by: Zong Li <zong.li@sifive.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

Create an auxiliary device for HPM when the IOMMU supports a hardware performance monitor. Use the physical address of the device directory table as the unique ID for auxiliary device in each IOMMU instance Reviewed-by: Guo Ren <guoren@kernel.org> Suggested-by: Samuel Holland <samuel.holland@sifive.com> Signed-off-by: Zong Li <zong.li@sifive.com> Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>

linux-riscv-bot · 2026-07-14T09:14:23Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 142.47 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T09:38:06Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1421.31 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:06:20Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1692.68 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:06:48Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 26.14 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:07:17Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 27.12 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:07:21Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.80 seconds
Result: WARNING
Output:

WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?
#148: 
new file mode 100644

CHECK: Please use a blank line after function/struct/union/enum declarations
#487: FILE: drivers/perf/riscv_iommu_pmu.c:335:
+}
+static void riscv_iommu_pmu_start_all(struct riscv_iommu_pmu *pmu)

total: 0 errors, 1 warnings, 1 checks, 814 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 9452440c1e70 ("drivers/perf: riscv-iommu: add risc-v iommu pmu driver") 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, 1 checks, 814 lines checked
CHECK: Please use a blank line after function/struct/union/enum declarations
WARNING: added, moved or deleted file(s), does MAINTAINERS need updating?

linux-riscv-bot · 2026-07-14T10:08:48Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 85.12 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:09:00Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.26 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:09:02Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
kdoc
Desc: Detects for kdoc errors
Duration: 0.89 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:09:04Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
module-param
Desc: Detect module_param changes
Duration: 0.28 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:09:06Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:09:08Z

Patch 1: "[v4,1/2] drivers/perf: riscv-iommu: add risc-v iommu pmu driver"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.32 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:11:45Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 142.01 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T10:35:42Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1435.45 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:03:53Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1689.23 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:04:20Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 25.77 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:04:51Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 29.58 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:04:54Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.10 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:21Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 85.11 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:22Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.25 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:25Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
kdoc
Desc: Detects for kdoc errors
Duration: 1.26 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:27Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
module-param
Desc: Detect module_param changes
Duration: 0.27 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:29Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.24 seconds
Result: PASS

linux-riscv-bot · 2026-07-14T11:06:30Z

Patch 2: "[v4,2/2] iommu/riscv: create a auxiliary device for HPM"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.32 seconds
Result: PASS

Linux RISC-V bot and others added 3 commits July 13, 2026 20:05

Adding CI files

f54dc6c

linux-riscv-bot force-pushed the workflow__riscv__fixes branch 3 times, most recently from 56b6f30 to 8ca72ef Compare July 15, 2026 17:25

linux-riscv-bot force-pushed the workflow__riscv__fixes branch from 8ca72ef to 60e0882 Compare July 19, 2026 17:58

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