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From: Ryan Roberts <ryan.roberts@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>, Marc Zyngier <maz@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	James Morse <james.morse@arm.com>,
	Zenghui Yu <yuzenghui@huawei.com>,
	Ard Biesheuvel <ardb@kernel.org>,
	Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Ryan Roberts <ryan.roberts@arm.com>,
	linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev
Subject: [PATCH v3 05/13] KVM: arm64: Add new (V)TCR_EL2 field definitions for FEAT_LPA2
Date: Mon, 18 Sep 2023 07:57:32 +0100	[thread overview]
Message-ID: <20230918065740.3670662-6-ryan.roberts@arm.com> (raw)
In-Reply-To: <20230918065740.3670662-1-ryan.roberts@arm.com>

As per Arm ARM (0487I.a), (V)TCR_EL2.DS fields control whether 52 bit
input and output addresses are supported on 4K and 16K page size
configurations when FEAT_LPA2 is known to have been implemented.

This adds these field definitions which will be used by KVM when
FEAT_LPA2 is enabled.

Signed-off-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
---
 arch/arm64/include/asm/kvm_arm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index 5882b2415596..e370e015d7c8 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -106,6 +106,7 @@
 #define HCRX_HOST_FLAGS (HCRX_EL2_MSCEn | HCRX_EL2_TCR2En)
 
 /* TCR_EL2 Registers bits */
+#define TCR_EL2_DS		(1UL << 32)
 #define TCR_EL2_RES1		((1U << 31) | (1 << 23))
 #define TCR_EL2_TBI		(1 << 20)
 #define TCR_EL2_PS_SHIFT	16
@@ -120,6 +121,7 @@
 			 TCR_EL2_ORGN0_MASK | TCR_EL2_IRGN0_MASK | TCR_EL2_T0SZ_MASK)
 
 /* VTCR_EL2 Registers bits */
+#define VTCR_EL2_DS		TCR_EL2_DS
 #define VTCR_EL2_RES1		(1U << 31)
 #define VTCR_EL2_HD		(1 << 22)
 #define VTCR_EL2_HA		(1 << 21)
-- 
2.25.1


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  parent reply	other threads:[~2023-09-18  6:58 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-18  6:57 [PATCH v3 00/13] KVM: arm64: Support FEAT_LPA2 at hyp s1 and vm s2 Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 01/13] arm64/mm: Update non-range tlb invalidation routines for FEAT_LPA2 Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 02/13] arm64/mm: Update range-based " Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 03/13] arm64/mm: Add FEAT_LPA2 specific ID_AA64MMFR0.TGRAN[2] Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 04/13] KVM: arm64: Add ARM64_HAS_LPA2 CPU capability Ryan Roberts
2023-09-27  6:38   ` Oliver Upton
2023-09-27  8:31     ` Ryan Roberts
2023-09-18  6:57 ` Ryan Roberts [this message]
2023-09-18  6:57 ` [PATCH v3 06/13] KVM: arm64: Use LPA2 page-tables for stage2 if HW supports it Ryan Roberts
2023-09-27  7:02   ` Oliver Upton
2023-09-27  8:35     ` Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 07/13] KVM: arm64: Use LPA2 page-tables for hyp stage1 " Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 08/13] KVM: arm64: Insert PS field at TCR_EL2 assembly time Ryan Roberts
2023-09-27  7:20   ` Oliver Upton
2023-09-27  8:37     ` Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 09/13] KVM: arm64: Convert translation level parameter to s8 Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 10/13] KVM: arm64: Support up to 5 levels of translation in kvm_pgtable Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 11/13] KVM: arm64: Allow guests with >48-bit IPA size on FEAT_LPA2 systems Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 12/13] KVM: selftests: arm64: Determine max ipa size per-page size Ryan Roberts
2023-09-18  6:57 ` [PATCH v3 13/13] KVM: selftests: arm64: Support P52V48 4K and 16K guest_modes Ryan Roberts

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