From: Maxwell Bland <mbland@motorola.com>
To: linux-mm@kvack.org
Cc: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>, Jonathan Corbet <corbet@lwn.net>,
Andrew Morton <akpm@linux-foundation.org>,
Ard Biesheuvel <ardb@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Christophe Leroy <christophe.leroy@csgroup.eu>,
Maxwell Bland <mbland@motorola.com>,
Alexandre Ghiti <alexghiti@rivosinc.com>,
linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v5 2/6] arm64: add APTable encoding to pagetable defs
Date: Mon, 24 Jun 2024 17:12:19 -0500 [thread overview]
Message-ID: <z7v77vr34beigy6hy75mfsnssihc2gxzc4z4xioork343wki2n@gjv6kdxo6zxc> (raw)
In-Reply-To: <2bcb3htsjhepxdybpw2bwot2jnuezl3p5mnj5rhjwgitlsufe7@xzhkyntridw3>
Add in the APTable permission bit encoding to describe table-level
hierarchical access control
Signed-off-by: Maxwell Bland <mbland@motorola.com>
---
arch/arm64/include/asm/pgtable-hwdef.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h
index 9943ff0af4c9..8c229fc96c0a 100644
--- a/arch/arm64/include/asm/pgtable-hwdef.h
+++ b/arch/arm64/include/asm/pgtable-hwdef.h
@@ -146,6 +146,11 @@
#define PMD_SECT_UXN (_AT(pmdval_t, 1) << 54)
#define PMD_TABLE_PXN (_AT(pmdval_t, 1) << 59)
#define PMD_TABLE_UXN (_AT(pmdval_t, 1) << 60)
+/*
+ * APTable[1:0] encoding for hierarchical data access control
+ */
+#define PMD_TABLE_KERN (_AT(pmdval_t, 1) << 61)
+#define PMD_TABLE_PRDONLY (_AT(pmdval_t, 1) << 62)
/*
* AttrIndx[2:0] encoding (mapping attributes defined in the MAIR* registers).
--
2.43.0
next prev parent reply other threads:[~2024-06-24 22:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-24 22:07 [PATCH v5 0/6] ptdump: add intermediate directory support Maxwell Bland
2024-06-24 22:11 ` [PATCH v5 1/6] mm: add ARCH_SUPPORTS_NON_LEAF_PTDUMP Maxwell Bland
2024-07-05 2:52 ` kernel test robot
2024-07-15 21:24 ` Maxwell Bland
2024-06-24 22:12 ` Maxwell Bland [this message]
2024-06-24 22:13 ` [PATCH v5 3/6] arm64: table descriptor ptdump support Maxwell Bland
2024-06-24 22:14 ` [PATCH v5 4/6] arm64: indent ptdump by level, aligning attributes Maxwell Bland
2024-06-24 22:15 ` [PATCH v5 5/6] arm64: exclusive upper bound for ptdump entries Maxwell Bland
2024-06-24 22:16 ` [PATCH v5 6/6] arm64: add attrs and format to ptdump document Maxwell Bland
2024-06-26 23:45 ` Randy Dunlap
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