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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>
Subject: [PATCH 05/28] KVM: arm64: Plumb HCRX_EL2.SRMASKEn in HCRX_EL2 sanitisation
Date: Thu,  2 Jul 2026 17:02:25 +0100	[thread overview]
Message-ID: <20260702160248.1377250-6-maz@kernel.org> (raw)
In-Reply-To: <20260702160248.1377250-1-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 16d8148dc3f12..8d5e4aacf49c4 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 32e2f9856768b..c6e8117a6f9cd 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



  parent reply	other threads:[~2026-07-02 16:03 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-02 16:02 [PATCH 00/28] KVM: arm64: Add support for FEAT_NV2p1 and FEAT_NV3 Marc Zyngier
2026-07-02 16:02 ` [PATCH 01/28] arm64: sysreg: Emit RESx/UNKN values for Mapping definitions Marc Zyngier
2026-07-02 16:02 ` [PATCH 02/28] arm64: Update ID_AA64MMFR4_EL1 description to 2026-03 JSON release Marc Zyngier
2026-07-02 16:02 ` [PATCH 03/28] KVM: arm64: Merge guest's HCRX_EL2 using NV_HCRX_GUEST_EXCLUDE Marc Zyngier
2026-07-02 16:02 ` [PATCH 04/28] KVM: arm64: Drop __HCRX_EL2_* masks Marc Zyngier
2026-07-02 16:02 ` Marc Zyngier [this message]
2026-07-02 16:02 ` [PATCH 06/28] KVM: arm64: Classify CPTR_EL2 as a SR_LOC_SPECIAL register Marc Zyngier
2026-07-02 16:02 ` [PATCH 07/28] KVM: arm64: Don't evaluate HCR_EL2.NV on ERET fast path Marc Zyngier
2026-07-02 16:02 ` [PATCH 08/28] arm64: Add ARM64_HAS_NV2P1 capability Marc Zyngier
2026-07-02 16:02 ` [PATCH 09/28] KVM: arm64: Relax CPTR_EL2 handling when FEAT_NV2p1 is present Marc Zyngier
2026-07-02 16:02 ` [PATCH 10/28] KVM: arm64: Relax CNTHCTL_EL2 " Marc Zyngier
2026-07-02 16:02 ` [PATCH 11/28] KVM: arm64: Expose FEAT_NV2p1 to NV guests Marc Zyngier
2026-07-02 16:02 ` [PATCH 12/28] arm64: Add FEAT_NV2p1 detection Marc Zyngier
2026-07-02 16:02 ` [PATCH 13/28] arm64: sysreg: Add NVHCR_EL2 description as a mirror of HCR_EL2 Marc Zyngier
2026-07-02 16:02 ` [PATCH 14/28] arm64: sysreg: Add HCRX_EL2 bits related to FEAT_NV3 Marc Zyngier
2026-07-02 16:02 ` [PATCH 15/28] arm64: Add ARM64_HAS_NV3 capability Marc Zyngier
2026-07-02 16:02 ` [PATCH 16/28] KVM: arm64: Split NV-specific exit fixups from the non-NV handling Marc Zyngier
2026-07-02 16:02 ` [PATCH 17/28] KVM: arm64: Add NV3 control bits to HCRX_EL2 sanitisation Marc Zyngier
2026-07-02 16:02 ` [PATCH 18/28] KVM: arm64: Add kvm_has_nv{2,3}() predicates Marc Zyngier
2026-07-02 16:02 ` [PATCH 19/28] KVM: arm64: Make HCR_EL2 a non-VNCR register Marc Zyngier
2026-07-02 16:02 ` [PATCH 20/28] KVM: arm64: Add sanitisation for NVHCR_EL2 Marc Zyngier
2026-07-02 16:02 ` [PATCH 21/28] KVM: arm64: Add NVHCR_EL2 handling to the sysreg array Marc Zyngier
2026-07-02 16:02 ` [PATCH 22/28] KVM: arm64: Add routing for NVHCR_EL2 trap Marc Zyngier
2026-07-02 16:02 ` [PATCH 23/28] KVM: arm64: Add NVHCR_EL2 context switching Marc Zyngier
2026-07-02 16:02 ` [PATCH 24/28] KVM: arm64: Engage NV3 ERET trap elision Marc Zyngier
2026-07-02 16:02 ` [PATCH 25/28] KVM: arm64: Engage NV3 TLBI " Marc Zyngier
2026-07-02 16:02 ` [PATCH 26/28] KVM: arm64: Add FEAT_NV3 detection Marc Zyngier
2026-07-02 16:02 ` [PATCH 27/28] KVM: arm64: Expose FEAT_NV3 to guests Marc Zyngier
2026-07-02 16:02 ` [PATCH 28/28] arm64: Add override for ID_AA64MMFR4_EL1.NV_frac Marc Zyngier

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