From: Joey Gouly <joey.gouly@arm.com>
To: <linux-arm-kernel@lists.infradead.org>
Cc: <nd@arm.com>, <akpm@linux-foundation.org>,
<aneesh.kumar@linux.ibm.com>, <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>
Subject: [PATCH v1 08/20] arm64: add POIndex defines
Date: Wed, 27 Sep 2023 15:01:11 +0100 [thread overview]
Message-ID: <20230927140123.5283-9-joey.gouly@arm.com> (raw)
In-Reply-To: <20230927140123.5283-1-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:[~2023-09-27 14:04 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-27 14:01 [PATCH v1 00/20] Permission Overlay Extension Joey Gouly
2023-09-27 14:01 ` [PATCH v1 01/20] arm64/sysreg: add system register POR_EL{0,1} Joey Gouly
2023-10-05 14:03 ` Mark Brown
2023-09-27 14:01 ` [PATCH v1 02/20] arm64/sysreg: update CPACR_EL1 register Joey Gouly
2023-10-05 14:02 ` Mark Brown
2023-09-27 14:01 ` [PATCH v1 03/20] arm64: cpufeature: add Permission Overlay Extension cpucap Joey Gouly
2023-09-27 14:01 ` [PATCH v1 04/20] arm64: disable trapping of POR_EL0 to EL2 Joey Gouly
2023-09-27 14:01 ` [PATCH v1 05/20] arm64: context switch POR_EL0 register Joey Gouly
2023-10-04 16:49 ` Catalin Marinas
2023-10-05 14:14 ` Mark Brown
2023-10-10 9:54 ` Joey Gouly
2023-10-10 11:47 ` Mark Brown
2023-09-27 14:01 ` [PATCH v1 06/20] KVM: arm64: Save/restore POE registers Joey Gouly
2023-09-28 16:47 ` Oliver Upton
2023-09-27 14:01 ` [PATCH v1 07/20] arm64: enable the Permission Overlay Extension for EL0 Joey Gouly
2023-10-05 14:17 ` Mark Brown
2023-10-05 14:19 ` Mark Brown
2023-09-27 14:01 ` Joey Gouly [this message]
2023-09-27 14:01 ` [PATCH v1 09/20] arm64: define VM_PKEY_BIT* for arm64 Joey Gouly
2023-09-30 11:57 ` kernel test robot
2023-10-03 16:51 ` Dave Hansen
2023-09-27 14:01 ` [PATCH v1 10/20] arm64: mask out POIndex when modifying a PTE Joey Gouly
2023-09-27 14:01 ` [PATCH v1 11/20] arm64: enable ARCH_HAS_PKEYS on arm64 Joey Gouly
2023-09-30 13:05 ` kernel test robot
2023-09-27 14:01 ` [PATCH v1 12/20] arm64: handle PKEY/POE faults Joey Gouly
2023-09-27 14:01 ` [PATCH v1 13/20] arm64: stop using generic mm_hooks.h Joey Gouly
2023-09-27 14:01 ` [PATCH v1 14/20] arm64: implement PKEYS support Joey Gouly
2023-09-27 14:01 ` [PATCH v1 15/20] arm64: add POE signal support Joey Gouly
2023-10-05 14:34 ` Mark Brown
2023-10-09 14:49 ` Mark Brown
2023-10-10 9:58 ` Joey Gouly
2023-10-10 11:48 ` Mark Brown
2023-10-10 9:57 ` Joey Gouly
2023-10-10 11:56 ` Mark Brown
2023-09-27 14:01 ` [PATCH v1 16/20] arm64: enable PKEY support for CPUs with S1POE Joey Gouly
2023-09-27 14:01 ` [PATCH v1 17/20] arm64: enable POE and PIE to coexist Joey Gouly
2023-09-27 14:01 ` [PATCH v1 18/20] kselftest/arm64: move get_header() Joey Gouly
2023-09-27 14:01 ` [PATCH v1 19/20] selftests: mm: move fpregs printing Joey Gouly
2023-10-03 16:46 ` Dave Hansen
2023-09-27 14:01 ` [PATCH v1 20/20] selftests: mm: make protection_keys test work on arm64 Joey Gouly
2023-10-03 16:46 ` Dave Hansen
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