From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org
Cc: Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oupton@kernel.org>,
Zenghui Yu <yuzenghui@huawei.com>, Fuad Tabba <tabba@google.com>,
Will Deacon <will@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 18/20] KVM: arm64: Remove all traces of HCR_EL2.MIOCNCE
Date: Mon, 26 Jan 2026 12:16:52 +0000 [thread overview]
Message-ID: <20260126121655.1641736-19-maz@kernel.org> (raw)
In-Reply-To: <20260126121655.1641736-1-maz@kernel.org>
MIOCNCE had the potential to eat your data, and also was never
implemented by anyone. It's been retrospectively removed from
the architecture, and we're happy to follow that lead.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/config.c | 1 -
arch/arm64/tools/sysreg | 3 +--
2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/arch/arm64/kvm/config.c b/arch/arm64/kvm/config.c
index f892098b70c0b..eebafb90bcf62 100644
--- a/arch/arm64/kvm/config.c
+++ b/arch/arm64/kvm/config.c
@@ -944,7 +944,6 @@ static const struct reg_bits_to_feat_map hcr_feat_map[] = {
HCR_EL2_FMO |
HCR_EL2_ID |
HCR_EL2_IMO |
- HCR_EL2_MIOCNCE |
HCR_EL2_PTW |
HCR_EL2_SWIO |
HCR_EL2_TACR |
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 650d7d477087e..724e6ad966c20 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -3834,8 +3834,7 @@ Field 43 NV1
Field 42 NV
Field 41 API
Field 40 APK
-Res0 39
-Field 38 MIOCNCE
+Res0 39:38
Field 37 TEA
Field 36 TERR
Field 35 TLOR
--
2.47.3
next prev parent reply other threads:[~2026-01-26 12:17 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-26 12:16 [PATCH 00/20] KVM: arm64: Generalise RESx handling Marc Zyngier
2026-01-26 12:16 ` [PATCH 01/20] arm64: Convert SCTLR_EL2 to sysreg infrastructure Marc Zyngier
2026-01-26 17:53 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 02/20] KVM: arm64: Remove duplicate configuration for SCTLR_EL1.{EE,E0E} Marc Zyngier
2026-01-26 18:04 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 03/20] KVM: arm64: Introduce standalone FGU computing primitive Marc Zyngier
2026-01-26 18:35 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 04/20] KVM: arm64: Introduce data structure tracking both RES0 and RES1 bits Marc Zyngier
2026-01-26 18:54 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 05/20] KVM: arm64: Extend unified RESx handling to runtime sanitisation Marc Zyngier
2026-01-26 19:15 ` Fuad Tabba
2026-01-27 10:52 ` Marc Zyngier
2026-01-26 12:16 ` [PATCH 06/20] KVM: arm64: Inherit RESx bits from FGT register descriptors Marc Zyngier
2026-01-27 15:21 ` Joey Gouly
2026-01-27 17:58 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 07/20] KVM: arm64: Allow RES1 bits to be inferred from configuration Marc Zyngier
2026-01-27 15:26 ` Joey Gouly
2026-01-27 17:58 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 08/20] KVM: arm64: Correctly handle SCTLR_EL1 RES1 bits for unsupported features Marc Zyngier
2026-01-27 18:06 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 09/20] KVM: arm64: Convert HCR_EL2.RW to AS_RES1 Marc Zyngier
2026-01-27 18:09 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 10/20] KVM: arm64: Simplify FIXED_VALUE handling Marc Zyngier
2026-01-27 18:20 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 11/20] KVM: arm64: Add REQUIRES_E2H1 constraint as configuration flags Marc Zyngier
2026-01-27 18:28 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 12/20] KVM: arm64: Add RESx_WHEN_E2Hx constraints " Marc Zyngier
2026-01-28 17:43 ` Fuad Tabba
2026-01-29 10:14 ` Marc Zyngier
2026-01-29 10:30 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 13/20] KVM: arm64: Move RESx into individual register descriptors Marc Zyngier
2026-01-29 16:29 ` Fuad Tabba
2026-01-29 17:19 ` Marc Zyngier
2026-01-29 17:39 ` Fuad Tabba
2026-01-29 18:07 ` Marc Zyngier
2026-01-29 18:13 ` Fuad Tabba
2026-01-30 9:06 ` Marc Zyngier
2026-01-26 12:16 ` [PATCH 14/20] KVM: arm64: Simplify handling of HCR_EL2.E2H RESx Marc Zyngier
2026-01-29 16:41 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 15/20] KVM: arm64: Get rid of FIXED_VALUE altogether Marc Zyngier
2026-01-29 16:54 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 16/20] KVM: arm64: Simplify handling of full register invalid constraint Marc Zyngier
2026-01-29 17:34 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 17/20] KVM: arm64: Remove all traces of FEAT_TME Marc Zyngier
2026-01-29 17:43 ` Fuad Tabba
2026-01-26 12:16 ` Marc Zyngier [this message]
2026-01-29 17:51 ` [PATCH 18/20] KVM: arm64: Remove all traces of HCR_EL2.MIOCNCE Fuad Tabba
2026-01-26 12:16 ` [PATCH 19/20] KVM: arm64: Add sanitisation to SCTLR_EL2 Marc Zyngier
2026-01-29 18:11 ` Fuad Tabba
2026-01-26 12:16 ` [PATCH 20/20] KVM: arm64: Add debugfs file dumping computed RESx values Marc Zyngier
2026-02-02 8:59 ` Fuad Tabba
2026-02-02 9:14 ` Marc Zyngier
2026-02-02 9:57 ` Fuad Tabba
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