From: Joey Gouly <joey.gouly@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: akpm@linux-foundation.org, aneesh.kumar@linux.ibm.com,
broonie@kernel.org, catalin.marinas@arm.com,
dave.hansen@linux.intel.com, joey.gouly@arm.com, maz@kernel.org,
oliver.upton@linux.dev, shuah@kernel.org, will@kernel.org,
kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Zenghui Yu <yuzenghui@huawei.com>
Subject: [PATCH v3 08/25] arm64: add POIndex defines
Date: Fri, 24 Nov 2023 16:34:53 +0000 [thread overview]
Message-ID: <20231124163510.1835740-9-joey.gouly@arm.com> (raw)
In-Reply-To: <20231124163510.1835740-1-joey.gouly@arm.com>
The 3-bit POIndex is stored in the PTE at bits 60..62.
Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
---
arch/arm64/include/asm/pgtable-hwdef.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
index e4944d517c99..fe270fa39110 100644
--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -178,6 +178,16 @@
#define PTE_PI_IDX_2 53 /* PXN */
#define PTE_PI_IDX_3 54 /* UXN */
+/*
+ * POIndex[2:0] encoding (Permission Overlay Extension)
+ */
+#define PTE_PO_IDX_0 (_AT(pteval_t, 1) << 60)
+#define PTE_PO_IDX_1 (_AT(pteval_t, 1) << 61)
+#define PTE_PO_IDX_2 (_AT(pteval_t, 1) << 62)
+
+#define PTE_PO_IDX_MASK GENMASK_ULL(62, 60)
+
+
/*
* Memory Attribute override for Stage-2 (MemAttr[3:0])
*/
--
2.25.1
next prev parent reply other threads:[~2023-11-24 16:35 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-24 16:34 [PATCH v3 00/25] Permission Overlay Extension Joey Gouly
2023-11-24 16:34 ` [PATCH v3 01/25] arm64/sysreg: add system register POR_EL{0,1} Joey Gouly
2023-12-04 18:40 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 02/25] arm64/sysreg: update CPACR_EL1 register Joey Gouly
2023-12-04 18:41 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 03/25] arm64: cpufeature: add Permission Overlay Extension cpucap Joey Gouly
2023-11-25 12:11 ` Mark Brown
2023-12-04 18:46 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 04/25] arm64: disable trapping of POR_EL0 to EL2 Joey Gouly
2023-12-07 13:37 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 05/25] arm64: context switch POR_EL0 register Joey Gouly
2023-11-25 12:02 ` Mark Brown
2023-12-07 13:55 ` Catalin Marinas
2023-12-07 14:12 ` Mark Brown
2023-12-07 13:51 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 06/25] KVM: arm64: Save/restore POE registers Joey Gouly
2023-11-27 18:01 ` Marc Zyngier
2023-11-29 15:11 ` Joey Gouly
2023-11-29 19:47 ` Marc Zyngier
2023-11-30 15:51 ` Marc Zyngier
2023-11-24 16:34 ` [PATCH v3 07/25] arm64: enable the Permission Overlay Extension for EL0 Joey Gouly
2023-12-07 14:08 ` Catalin Marinas
2023-11-24 16:34 ` Joey Gouly [this message]
2023-11-24 16:34 ` [PATCH v3 09/25] arm64: define VM_PKEY_BIT* for arm64 Joey Gouly
2023-12-07 15:10 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 10/25] arm64: mask out POIndex when modifying a PTE Joey Gouly
2023-12-07 15:11 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 11/25] arm64: enable ARCH_HAS_PKEYS on arm64 Joey Gouly
2023-12-07 15:25 ` Catalin Marinas
2023-12-07 15:44 ` Joey Gouly
2023-11-24 16:34 ` [PATCH v3 12/25] arm64: handle PKEY/POE faults Joey Gouly
2023-12-11 18:18 ` Catalin Marinas
2023-12-13 15:02 ` Joey Gouly
2023-11-24 16:34 ` [PATCH v3 13/25] arm64: stop using generic mm_hooks.h Joey Gouly
2023-12-11 18:22 ` Catalin Marinas
2023-11-24 16:34 ` [PATCH v3 14/25] arm64: implement PKEYS support Joey Gouly
2023-12-11 18:49 ` Catalin Marinas
2023-12-14 13:47 ` Joey Gouly
2023-11-24 16:35 ` [PATCH v3 15/25] arm64: add POE signal support Joey Gouly
2023-12-11 18:53 ` Catalin Marinas
2023-12-12 12:03 ` Szabolcs Nagy
2023-11-24 16:35 ` [PATCH v3 16/25] arm64: enable PKEY support for CPUs with S1POE Joey Gouly
2023-12-11 18:53 ` Catalin Marinas
2023-11-24 16:35 ` [PATCH v3 17/25] arm64: enable POE and PIE to coexist Joey Gouly
2023-12-11 18:57 ` Catalin Marinas
2023-11-24 16:35 ` [PATCH v3 18/25] arm64/ptrace: add support for FEAT_POE Joey Gouly
2023-11-24 17:18 ` Mark Brown
2023-12-11 18:58 ` Catalin Marinas
2023-11-24 16:35 ` [PATCH v3 19/25] kselftest/arm64: move get_header() Joey Gouly
2023-11-24 17:16 ` Mark Brown
2023-11-24 16:35 ` [PATCH v3 20/25] selftests: mm: move fpregs printing Joey Gouly
2023-11-24 16:35 ` [PATCH v3 21/25] selftests: mm: make protection_keys test work on arm64 Joey Gouly
2023-11-24 16:35 ` [PATCH v3 22/25] kselftest/arm64: add HWCAP test for FEAT_S1POE Joey Gouly
2023-11-24 17:02 ` Mark Brown
2023-11-24 16:35 ` [PATCH v3 23/25] kselftest/arm64: parse POE_MAGIC in a signal frame Joey Gouly
2023-11-24 16:35 ` [PATCH v3 24/25] kselftest/arm64: Add test case for POR_EL0 signal frame records Joey Gouly
2023-11-24 17:04 ` Mark Brown
2023-11-24 16:35 ` [PATCH v3 25/25] KVM: selftests: get-reg-list: add Permission Overlay registers Joey Gouly
2023-11-24 17:07 ` Mark Brown
2023-12-04 11:03 ` [PATCH v3 00/25] Permission Overlay Extension Marc Zyngier
2023-12-05 15:41 ` Joey Gouly
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