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[RFC,7/8] arm64/pgtable-prot.h: reorganize to cope with asm

Message ID 20210410095654.24102-8-kernelfans@gmail.com (mailing list archive)
State New, archived
Headers show
Series use __create_pgd_mapping() to implement idmap and unify codes | expand

Commit Message

Pingfan Liu April 10, 2021, 9:56 a.m. UTC 
In order to refer PAGE_KERNEL_EXEC in head.S, reorganize this file.

Signed-off-by: Pingfan Liu <kernelfans@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Kristina Martsenko <kristina.martsenko@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Steven Price <steven.price@arm.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Atish Patra <atish.patra@wdc.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Mark Brown <broonie@kernel.org>
To: linux-arm-kernel@lists.infradead.org
---
 arch/arm64/include/asm/pgtable-prot.h | 34 +++++++++++++++++----------
 1 file changed, 21 insertions(+), 13 deletions(-)
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Patch

diff --git a/arch/arm64/include/asm/pgtable-prot.h b/arch/arm64/include/asm/pgtable-prot.h
index 9a65fb528110..424fc5e6fd69 100644
--- a/arch/arm64/include/asm/pgtable-prot.h
+++ b/arch/arm64/include/asm/pgtable-prot.h
@@ -33,9 +33,6 @@ 
 
 extern bool arm64_use_ng_mappings;
 
-#define _PROT_DEFAULT		(PTE_TYPE_PAGE | PTE_AF | PTE_SHARED)
-#define _PROT_SECT_DEFAULT	(PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S)
-
 #define PTE_MAYBE_NG		(arm64_use_ng_mappings ? PTE_NG : 0)
 #define PMD_MAYBE_NG		(arm64_use_ng_mappings ? PMD_SECT_NG : 0)
 
@@ -49,6 +46,26 @@  extern bool arm64_use_ng_mappings;
 #define PTE_MAYBE_GP		0
 #endif
 
+#define PAGE_S2_MEMATTR(attr)						\
+	({								\
+		u64 __val;						\
+		if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB))		\
+			__val = PTE_S2_MEMATTR(MT_S2_FWB_ ## attr);	\
+		else							\
+			__val = PTE_S2_MEMATTR(MT_S2_ ## attr);		\
+		__val;							\
+	 })
+
+#endif /* __ASSEMBLY__ */
+
+#ifdef __ASSEMBLY__
+#define PTE_MAYBE_NG	0
+#define __pgprot(x)	(x)
+#endif
+
+#define _PROT_DEFAULT		(PTE_TYPE_PAGE | PTE_AF | PTE_SHARED)
+#define _PROT_SECT_DEFAULT	(PMD_TYPE_SECT | PMD_SECT_AF | PMD_SECT_S)
+
 #define PROT_DEFAULT		(_PROT_DEFAULT | PTE_MAYBE_NG)
 #define PROT_SECT_DEFAULT	(_PROT_SECT_DEFAULT | PMD_MAYBE_NG)
 
@@ -71,15 +88,7 @@  extern bool arm64_use_ng_mappings;
 #define PAGE_KERNEL_EXEC	__pgprot(PROT_NORMAL & ~PTE_PXN)
 #define PAGE_KERNEL_EXEC_CONT	__pgprot((PROT_NORMAL & ~PTE_PXN) | PTE_CONT)
 
-#define PAGE_S2_MEMATTR(attr)						\
-	({								\
-		u64 __val;						\
-		if (cpus_have_const_cap(ARM64_HAS_STAGE2_FWB))		\
-			__val = PTE_S2_MEMATTR(MT_S2_FWB_ ## attr);	\
-		else							\
-			__val = PTE_S2_MEMATTR(MT_S2_ ## attr);		\
-		__val;							\
-	 })
+
 
 #define PAGE_NONE		__pgprot(((_PAGE_DEFAULT) & ~PTE_VALID) | PTE_PROT_NONE | PTE_RDONLY | PTE_NG | PTE_PXN | PTE_UXN)
 /* shared+writable pages are clean by default, hence PTE_RDONLY|PTE_WRITE */
@@ -106,6 +115,5 @@  extern bool arm64_use_ng_mappings;
 #define __S110  PAGE_SHARED_EXEC
 #define __S111  PAGE_SHARED_EXEC
 
-#endif /* __ASSEMBLY__ */
 
 #endif /* __ASM_PGTABLE_PROT_H */