From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
kvm@vger.kernel.org
Cc: Steffen Eiden <seiden@linux.ibm.com>,
Joey Gouly <joey.gouly@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oupton@kernel.org>,
Zenghui Yu <yuzenghui@huawei.com>,
Yao Yuan <yaoyuan@linux.alibaba.com>,
Wei-Lin Chang <weilin.chang@arm.com>
Subject: [PATCH v3 05/28] KVM: arm64: Plumb HCRX_EL2.SRMASKEn in HCRX_EL2 sanitisation
Date: Wed, 22 Jul 2026 08:42:11 +0100 [thread overview]
Message-ID: <20260722074234.3330999-6-maz@kernel.org> (raw)
In-Reply-To: <20260722074234.3330999-1-maz@kernel.org>
HCRX_EL2.SRMASKEn is a new bit enabling FEAT_SRMASK for a guest.
We don't plan to support it any time soon, but it doesn't hurt to
actively document it, specially as we are going to add more bits
we actually care about.
Signed-off-by: Marc Zyngier <maz@kernel.org>
---
arch/arm64/kvm/config.c | 1 +
arch/arm64/tools/sysreg | 4 +++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/config.c b/arch/arm64/kvm/config.c
index 96ddcefc71eb5..c61d62b796023 100644
--- a/arch/arm64/kvm/config.c
+++ b/arch/arm64/kvm/config.c
@@ -904,6 +904,7 @@ static const DECLARE_FEAT_MAP_FGT(hdfgwtr2_desc, hdfgwtr2_masks,
static const struct reg_bits_to_feat_map hcrx_feat_map[] = {
+ NEEDS_FEAT(HCRX_EL2_SRMASKEn, FEAT_SRMASK),
NEEDS_FEAT(HCRX_EL2_PACMEn, feat_pauth_lr),
NEEDS_FEAT(HCRX_EL2_EnFPM, FEAT_FPMR),
NEEDS_FEAT(HCRX_EL2_GCSEn, FEAT_GCS),
diff --git a/arch/arm64/tools/sysreg b/arch/arm64/tools/sysreg
index 3171c87eb2447..28755f70f0bf0 100644
--- a/arch/arm64/tools/sysreg
+++ b/arch/arm64/tools/sysreg
@@ -4545,7 +4545,9 @@ Fields ZCR_ELx
EndSysreg
Sysreg HCRX_EL2 3 4 1 2 2
-Res0 63:25
+Res0 63:27
+Field 26 SRMASKEn
+Res0 25
Field 24 PACMEn
Field 23 EnFPM
Field 22 GCSEn
--
2.47.3
next prev parent reply other threads:[~2026-07-22 7:42 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-22 7:42 [PATCH v3 00/28] KVM: arm64: Add support for FEAT_NV2p1 and FEAT_NV3 Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 01/28] arm64: sysreg: Emit RESx/UNKN values for Mapping/Fields definitions Marc Zyngier
2026-07-22 7:55 ` sashiko-bot
2026-07-22 9:05 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 02/28] arm64: Update ID_AA64MMFR4_EL1 description to 2026-03 JSON release Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 03/28] KVM: arm64: Merge guest's HCRX_EL2 using NV_HCRX_GUEST_EXCLUDE Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 04/28] KVM: arm64: Drop __HCRX_EL2_* masks Marc Zyngier
2026-07-22 7:42 ` Marc Zyngier [this message]
2026-07-22 7:42 ` [PATCH v3 06/28] KVM: arm64: Classify CPTR_EL2 as a SR_LOC_SPECIAL register Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 07/28] KVM: arm64: Don't evaluate HCR_EL2.NV nor HFGITR_EL2.ERET on ERET fast path Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 08/28] arm64: Add ARM64_HAS_NV2P1 capability Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 09/28] KVM: arm64: Relax CPTR_EL2 handling when FEAT_NV2p1 is present Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 10/28] KVM: arm64: Relax CNTHCTL_EL2 " Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 11/28] KVM: arm64: Expose FEAT_NV2p1 to NV guests Marc Zyngier
2026-07-22 8:32 ` sashiko-bot
2026-07-22 9:01 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 12/28] arm64: Add FEAT_NV2p1 detection Marc Zyngier
2026-07-22 8:13 ` sashiko-bot
2026-07-22 8:57 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 13/28] arm64: sysreg: Add NVHCR_EL2 description as a mirror of HCR_EL2 Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 14/28] arm64: sysreg: Add HCRX_EL2 bits related to FEAT_NV3 Marc Zyngier
2026-07-22 8:11 ` sashiko-bot
2026-07-22 8:56 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 15/28] arm64: Add ARM64_HAS_NV3 capability Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 16/28] KVM: arm64: Split NV-specific exit fixups from the non-NV handling Marc Zyngier
2026-07-22 8:23 ` sashiko-bot
2026-07-22 9:08 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 17/28] KVM: arm64: Add NV3 control bits to HCRX_EL2 sanitisation Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 18/28] KVM: arm64: Add kvm_has_nv{2,3}() predicates Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 19/28] KVM: arm64: Make HCR_EL2 a non-VNCR register Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 20/28] KVM: arm64: Add sanitisation for NVHCR_EL2 Marc Zyngier
2026-07-22 8:38 ` sashiko-bot
2026-07-22 9:11 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 21/28] KVM: arm64: Add NVHCR_EL2 handling to the sysreg array Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 22/28] KVM: arm64: Add routing for NVHCR_EL2 trap Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 23/28] KVM: arm64: Add NVHCR_EL2 context switching Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 24/28] KVM: arm64: Engage NV3 ERET trap elision Marc Zyngier
2026-07-22 8:50 ` sashiko-bot
2026-07-22 9:16 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 25/28] KVM: arm64: Engage NV3 TLBI " Marc Zyngier
2026-07-22 8:57 ` sashiko-bot
2026-07-22 9:04 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 26/28] KVM: arm64: Add FEAT_NV3 detection Marc Zyngier
2026-07-22 8:53 ` sashiko-bot
2026-07-22 9:04 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 27/28] KVM: arm64: Expose FEAT_NV3 to guests Marc Zyngier
2026-07-22 9:06 ` sashiko-bot
2026-07-22 9:18 ` Marc Zyngier
2026-07-22 7:42 ` [PATCH v3 28/28] arm64: Add override for ID_AA64MMFR4_EL1.NV_frac Marc Zyngier
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