From: Fuad Tabba <fuad.tabba@linux.dev>
To: Will Deacon <will@kernel.org>, Catalin Marinas <catalin.marinas@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Marc Zyngier <maz@kernel.org>, Oliver Upton <oupton@kernel.org>,
Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>,
Steffen Eiden <seiden@linux.ibm.com>,
Mark Brown <broonie@kernel.org>, Fuad Tabba <tabba@google.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 0/4] arm64: sysreg: Bring field definitions in line with the spec
Date: Tue, 13 Oct 2026 14:02:43 +0100 [thread overview]
Message-ID: <20261013130247.4135515-1-fuad.tabba@linux.dev> (raw)
Hi folks,
Fixes to definitions in the sysreg file that don't match the current
spec: three wrong enum values, two misspelt field names, and fields the
architecture has dropped, including leftovers from FEAT_TME. The last
patch also removes the BRBE driver's check on two more such
fields (BRBINFx_EL1.T and LASTFAILED), the only functional change in
the series.
These came out of the pKVM feature-bit audit, which led me to check the
whole file against ARM's register descriptions.
I plan to look at turning that check into a linter under
arch/arm64/tools, along the lines Will suggested [1], so the next
batch doesn't depend on someone reading the spec.
Based on Linux 7.3-rc6 (a90ee4305c4a5).
Cheers,
/fuad
[1] https://lore.kernel.org/all/20241211224015.GB17836@willie-the-truck/
Fuad Tabba (4):
arm64: sysreg: Fix three incorrect enum values
arm64: sysreg: Fix the names of two misspelt fields
arm64: sysreg: Mark fields the architecture dropped as RES0
perf: arm_brbe: Remove the check for TME transaction states
arch/arm64/kvm/config.c | 4 ++--
arch/arm64/kvm/emulate-nested.c | 2 +-
arch/arm64/tools/sysreg | 28 ++++++++++------------------
drivers/perf/arm_brbe.c | 18 ------------------
4 files changed, 13 insertions(+), 39 deletions(-)
base-commit: a90ee4305c4a5df72c11b31dacfdc76e00fcf78a
--
2.39.5
next reply other threads:[~2026-10-13 13:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-13 13:02 Fuad Tabba [this message]
2026-10-13 13:02 ` [PATCH 1/4] arm64: sysreg: Fix three incorrect enum values Fuad Tabba
2026-10-13 13:11 ` sashiko-bot
2026-10-13 13:02 ` [PATCH 2/4] arm64: sysreg: Fix the names of two misspelt fields Fuad Tabba
2026-10-13 13:09 ` sashiko-bot
2026-10-13 13:02 ` [PATCH 3/4] arm64: sysreg: Mark fields the architecture dropped as RES0 Fuad Tabba
2026-10-13 13:02 ` [PATCH 4/4] perf: arm_brbe: Remove the check for TME transaction states Fuad Tabba
2026-10-13 13:13 ` sashiko-bot
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