From: Fuad Tabba <tabba@google.com>
To: kvmarm@lists.linux.dev
Cc: maz@kernel.org, oliver.upton@linux.dev, broonie@kernel.org,
james.morse@arm.com, suzuki.poulose@arm.com,
yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org,
eric.auger@redhat.com, jingzhangos@google.com,
joey.gouly@arm.com, tabba@google.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 13/17] KVM: arm64: Define FGT nMASK bits relative to other fields
Date: Thu, 14 Dec 2023 10:01:53 +0000 [thread overview]
Message-ID: <20231214100158.2305400-14-tabba@google.com> (raw)
In-Reply-To: <20231214100158.2305400-1-tabba@google.com>
Now that RES0 and MASK have full coverage, no speed to manually
encode nMASK. Calculate it relative to the other fields.
No functional change intended.
Signed-off-by: Fuad Tabba <tabba@google.com>
---
arch/arm64/include/asm/kvm_arm.h | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_arm.h b/arch/arm64/include/asm/kvm_arm.h
index bd20d27f1b33..b7a9fe36bb59 100644
--- a/arch/arm64/include/asm/kvm_arm.h
+++ b/arch/arm64/include/asm/kvm_arm.h
@@ -346,7 +346,7 @@
*/
#define __HFGRTR_EL2_RES0 HFGxTR_EL2_RES0
#define __HFGRTR_EL2_MASK GENMASK(49, 0)
-#define __HFGRTR_EL2_nMASK (GENMASK(63, 52) | BIT(50))
+#define __HFGRTR_EL2_nMASK ~(__HFGRTR_EL2_RES0 | __HFGRTR_EL2_MASK)
/*
* The HFGWTR bits are a subset of HFGRTR bits. To ensure we don't miss any
@@ -357,17 +357,17 @@
GENMASK(15, 14) | GENMASK(10, 9) | BIT(2))
#define __HFGWTR_EL2_RES0 (__HFGRTR_EL2_RES0 | __HFGRTR_ONLY_MASK)
#define __HFGWTR_EL2_MASK (__HFGRTR_EL2_MASK & ~__HFGRTR_ONLY_MASK)
-#define __HFGWTR_EL2_nMASK (__HFGRTR_EL2_nMASK & ~__HFGRTR_ONLY_MASK)
+#define __HFGWTR_EL2_nMASK ~(__HFGWTR_EL2_RES0 | __HFGWTR_EL2_MASK)
#define __HFGITR_EL2_RES0 HFGITR_EL2_RES0
#define __HFGITR_EL2_MASK (BIT(62) | BIT(60) | GENMASK(54, 0))
-#define __HFGITR_EL2_nMASK GENMASK(59, 55)
+#define __HFGITR_EL2_nMASK ~(__HFGITR_EL2_RES0 | __HFGITR_EL2_MASK)
#define __HDFGRTR_EL2_RES0 HDFGRTR_EL2_RES0
#define __HDFGRTR_EL2_MASK (BIT(63) | GENMASK(58, 50) | GENMASK(48, 43) | \
GENMASK(41, 40) | GENMASK(37, 22) | \
GENMASK(19, 9) | GENMASK(7, 0))
-#define __HDFGRTR_EL2_nMASK GENMASK(62, 59)
+#define __HDFGRTR_EL2_nMASK ~(__HDFGRTR_EL2_RES0 | __HDFGRTR_EL2_MASK)
#define __HDFGWTR_EL2_RES0 HDFGWTR_EL2_RES0
#define __HDFGWTR_EL2_MASK (GENMASK(57, 52) | GENMASK(50, 48) | \
@@ -375,16 +375,16 @@
GENMASK(37, 35) | GENMASK(33, 31) | \
GENMASK(29, 23) | GENMASK(21, 10) | \
GENMASK(8, 7) | GENMASK(5, 0))
-#define __HDFGWTR_EL2_nMASK GENMASK(62, 60)
+#define __HDFGWTR_EL2_nMASK ~(__HDFGWTR_EL2_RES0 | __HDFGWTR_EL2_MASK)
#define __HAFGRTR_EL2_RES0 HAFGRTR_EL2_RES0
#define __HAFGRTR_EL2_MASK (GENMASK(49, 17) | GENMASK(4, 0))
-#define __HAFGRTR_EL2_nMASK 0UL
+#define __HAFGRTR_EL2_nMASK ~(__HAFGRTR_EL2_RES0 | __HAFGRTR_EL2_MASK)
/* Similar definitions for HCRX_EL2 */
#define __HCRX_EL2_RES0 HCRX_EL2_RES0
#define __HCRX_EL2_MASK (BIT(6))
-#define __HCRX_EL2_nMASK (GENMASK(24, 14) | GENMASK(11, 7) | GENMASK(5, 0))
+#define __HCRX_EL2_nMASK ~(__HCRX_EL2_RES0 | __HCRX_EL2_MASK)
/* Hyp Prefetch Fault Address Register (HPFAR/HDFAR) */
#define HPFAR_MASK (~UL(0xf))
--
2.43.0.472.g3155946c3a-goog
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next prev parent reply other threads:[~2023-12-14 11:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-14 10:01 [PATCH v3 00/17] KVM: arm64: Fixes to fine grain traps and pKVM traps Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 01/17] arm64/sysreg: Add missing Pauth_LR field definitions to ID_AA64ISAR1_EL1 Fuad Tabba
2023-12-14 10:42 ` Mark Brown
2023-12-14 10:49 ` Mark Brown
2023-12-14 10:01 ` [PATCH v3 02/17] arm64/sysreg: Add missing ExtTrcBuff field definition to ID_AA64DFR0_EL1 Fuad Tabba
2023-12-14 10:46 ` Mark Brown
2023-12-14 10:01 ` [PATCH v3 03/17] arm64/sysreg: Add missing system register definitions for FGT Fuad Tabba
2023-12-14 10:50 ` Mark Brown
2023-12-14 10:01 ` [PATCH v3 04/17] arm64/sysreg: Add missing system instruction " Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 05/17] KVM: arm64: Explicitly trap unsupported HFGxTR_EL2 features Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 06/17] KVM: arm64: Add missing HFGxTR_EL2 FGT entries to nested virt Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 07/17] KVM: arm64: Add missing HFGITR_EL2 " Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 08/17] KVM: arm64: Add bit masks for HAFGRTR_EL2 Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 09/17] KVM: arm64: Handle HAFGRTR_EL2 trapping in nested virt Fuad Tabba
2023-12-15 13:43 ` Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 10/17] KVM: arm64: Update and fix FGT register masks Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 11/17] KVM: arm64: Add build validation for FGT trap mask values Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 12/17] KVM: arm64: Use generated FGT RES0 bits instead of specifying them Fuad Tabba
2023-12-14 10:01 ` Fuad Tabba [this message]
2023-12-18 9:07 ` [PATCH v3 13/17] KVM: arm64: Define FGT nMASK bits relative to other fields Marc Zyngier
2023-12-18 9:16 ` Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 14/17] KVM: arm64: Macros for setting/clearing FGT bits Fuad Tabba
2023-12-15 13:45 ` Fuad Tabba
2023-12-18 9:40 ` Marc Zyngier
2023-12-18 9:56 ` Fuad Tabba
2023-12-18 11:12 ` Marc Zyngier
2023-12-18 11:17 ` Fuad Tabba
2023-12-18 12:25 ` Marc Zyngier
2023-12-18 12:30 ` Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 15/17] KVM: arm64: Fix which features are marked as allowed for protected VMs Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 16/17] KVM: arm64: Mark PAuth as a restricted feature " Fuad Tabba
2023-12-14 10:01 ` [PATCH v3 17/17] KVM: arm64: Trap external trace " Fuad Tabba
2023-12-17 13:41 ` [PATCH v3 00/17] KVM: arm64: Fixes to fine grain traps and pKVM traps Will Deacon
2023-12-18 17:11 ` (subset) " Marc Zyngier
2023-12-18 17:15 ` Fuad Tabba
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