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From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, kvm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Oliver Upton <oliver.upton@linux.dev>,
	Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 13/13] KVM: arm64: nv: Advertise support for PAuth
Date: Mon, 19 Feb 2024 09:20:14 +0000	[thread overview]
Message-ID: <20240219092014.783809-14-maz@kernel.org> (raw)
In-Reply-To: <20240219092014.783809-1-maz@kernel.org>

Now that we (hopefully) correctly handle ERETAx, drop the masking
of the PAuth feature (something that was not even complete, as
APA3 and AGA3 were still exposed).

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/nested.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index ced30c90521a..6813c7c7f00a 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c
@@ -35,13 +35,9 @@ static u64 limit_nv_id_reg(u32 id, u64 val)
 		break;
 
 	case SYS_ID_AA64ISAR1_EL1:
-		/* Support everything but PtrAuth and Spec Invalidation */
+		/* Support everything but Spec Invalidation */
 		val &= ~(GENMASK_ULL(63, 56)	|
-			 NV_FTR(ISAR1, SPECRES)	|
-			 NV_FTR(ISAR1, GPI)	|
-			 NV_FTR(ISAR1, GPA)	|
-			 NV_FTR(ISAR1, API)	|
-			 NV_FTR(ISAR1, APA));
+			 NV_FTR(ISAR1, SPECRES));
 		break;
 
 	case SYS_ID_AA64PFR0_EL1:
-- 
2.39.2


WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, kvm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Cc: James Morse <james.morse@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	Oliver Upton <oliver.upton@linux.dev>,
	Zenghui Yu <yuzenghui@huawei.com>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>
Subject: [PATCH 13/13] KVM: arm64: nv: Advertise support for PAuth
Date: Mon, 19 Feb 2024 09:20:14 +0000	[thread overview]
Message-ID: <20240219092014.783809-14-maz@kernel.org> (raw)
In-Reply-To: <20240219092014.783809-1-maz@kernel.org>

Now that we (hopefully) correctly handle ERETAx, drop the masking
of the PAuth feature (something that was not even complete, as
APA3 and AGA3 were still exposed).

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/nested.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kvm/nested.c b/arch/arm64/kvm/nested.c
index ced30c90521a..6813c7c7f00a 100644
--- a/arch/arm64/kvm/nested.c
+++ b/arch/arm64/kvm/nested.c
@@ -35,13 +35,9 @@ static u64 limit_nv_id_reg(u32 id, u64 val)
 		break;
 
 	case SYS_ID_AA64ISAR1_EL1:
-		/* Support everything but PtrAuth and Spec Invalidation */
+		/* Support everything but Spec Invalidation */
 		val &= ~(GENMASK_ULL(63, 56)	|
-			 NV_FTR(ISAR1, SPECRES)	|
-			 NV_FTR(ISAR1, GPI)	|
-			 NV_FTR(ISAR1, GPA)	|
-			 NV_FTR(ISAR1, API)	|
-			 NV_FTR(ISAR1, APA));
+			 NV_FTR(ISAR1, SPECRES));
 		break;
 
 	case SYS_ID_AA64PFR0_EL1:
-- 
2.39.2


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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2024-02-19  9:20 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-19  9:20 [PATCH 00/13] KVM/arm64: Add NV support for ERET and PAuth Marc Zyngier
2024-02-19  9:20 ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 01/13] KVM: arm64: Harden __ctxt_sys_reg() against out-of-range values Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-20 11:20   ` Joey Gouly
2024-02-20 11:20     ` Joey Gouly
2024-02-20 11:57     ` Marc Zyngier
2024-02-20 11:57       ` Marc Zyngier
2024-02-20 13:17       ` Joey Gouly
2024-02-20 13:17         ` Joey Gouly
2024-02-19  9:20 ` [PATCH 02/13] KVM: arm64: Clarify ESR_ELx_ERET_ISS_ERET* Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-20 11:31   ` Joey Gouly
2024-02-20 11:31     ` Joey Gouly
2024-02-20 12:29     ` Marc Zyngier
2024-02-20 12:29       ` Marc Zyngier
2024-02-20 13:23       ` Joey Gouly
2024-02-20 13:23         ` Joey Gouly
2024-02-20 13:41         ` Marc Zyngier
2024-02-20 13:41           ` Marc Zyngier
2024-02-20 15:18           ` Joey Gouly
2024-02-20 15:18             ` Joey Gouly
2024-02-19  9:20 ` [PATCH 03/13] KVM: arm64: nv: Drop VCPU_HYP_CONTEXT flag Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-20 11:58   ` Joey Gouly
2024-02-20 11:58     ` Joey Gouly
2024-02-19  9:20 ` [PATCH 04/13] KVM: arm64: nv: Configure HCR_EL2 for FEAT_NV2 Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-20 15:16   ` Joey Gouly
2024-02-20 15:16     ` Joey Gouly
2024-02-20 15:41     ` Marc Zyngier
2024-02-20 15:41       ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 05/13] KVM: arm64: nv: Add trap forwarding for ERET and SMC Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-22 11:05   ` Joey Gouly
2024-02-22 11:05     ` Joey Gouly
2024-02-19  9:20 ` [PATCH 06/13] KVM: arm64: nv: Fast-track 'InHost' exception returns Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 07/13] KVM: arm64: nv: Honor HFGITR_EL2.ERET being set Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 08/13] KVM: arm64: nv: Handle HCR_EL2.{API,APK} independantly Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 09/13] KVM: arm64: nv: Reinject PAC exceptions caused by HCR_EL2.API==0 Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 10/13] KVM: arm64: nv: Add kvm_has_pauth() helper Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 11/13] KVM: arm64: nv: Add emulation for ERETAx instructions Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` [PATCH 12/13] KVM: arm64: nv: Handle ERETA[AB] instructions Marc Zyngier
2024-02-19  9:20   ` Marc Zyngier
2024-02-19  9:20 ` Marc Zyngier [this message]
2024-02-19  9:20   ` [PATCH 13/13] KVM: arm64: nv: Advertise support for PAuth Marc Zyngier

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