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 3/4] arm64: sysreg: Mark fields the architecture dropped as RES0
Date: Tue, 13 Oct 2026 14:02:46 +0100 [thread overview]
Message-ID: <20261013130247.4135515-4-fuad.tabba@linux.dev> (raw)
In-Reply-To: <20261013130247.4135515-1-fuad.tabba@linux.dev>
Commit d65bf6e317e7 ("KVM: arm64: Remove all traces of FEAT_TME")
turned the TME fields of SCTLR_EL1 into RES0, but left their copies in
SCTLRMASK_EL1. PMICFILTR_EL0.T and BRBFCR_EL1.LASTFAILED have gone from
the architecture as well. All six fields are RES0 in DDI0601 2026-09.
Mark them RES0 to match the spec. Nothing in the tree refers to them.
Signed-off-by: Fuad Tabba <fuad.tabba@linux.dev>
---
arch/arm64/tools/sysreg | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 341db8e9b6c37..99af1c39478be 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -1420,8 +1420,7 @@ Field 17 DIRECT
Field 16 EnI
Res0 15:8
Field 7 PAUSED
-Field 6 LASTFAILED
-Res0 5:0
+Res0 6:0
EndSysreg
Sysreg BRBTS_EL1 2 1 9 0 2
@@ -2663,11 +2662,7 @@ Field 57 EPAN
Field 56 EnALS
Field 55 EnAS0
Field 54 EnASR
-Field 53 TME
-Field 52 TME0
-Field 51 TMT
-Field 50 TMT0
-Res0 49:47
+Res0 53:47
Field 46 TWEDEL
Field 45 TWEDEn
Field 44 DSSBS
@@ -2985,7 +2980,7 @@ Field 27 NSH
Field 26 M
Res0 25
Field 24 SH
-Field 23 T
+Res0 23
Field 22 RLK
Field 21 RLU
Field 20 RLH
--
2.39.5
next prev parent reply other threads:[~2026-10-13 13:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-13 13:02 [PATCH 0/4] arm64: sysreg: Bring field definitions in line with the spec Fuad Tabba
2026-10-13 13:02 ` [PATCH 1/4] arm64: sysreg: Fix three incorrect enum values Fuad Tabba
2026-10-13 13:49 ` Mark Brown
2026-10-13 13:02 ` [PATCH 2/4] arm64: sysreg: Fix the names of two misspelt fields Fuad Tabba
2026-10-13 14:56 ` Mark Brown
2026-10-13 13:02 ` Fuad Tabba [this message]
2026-10-13 13:02 ` [PATCH 4/4] perf: arm_brbe: Remove the check for TME transaction states Fuad Tabba
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