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From: Michael Ellerman <mpe@ellerman.id.au>
To: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2 1/6] powerpc/mm/64s: Add _PAGE_KERNEL_ROX
Date: Wed, 31 Mar 2021 11:38:40 +1100	[thread overview]
Message-ID: <20210331003845.216246-1-mpe@ellerman.id.au> (raw)

In the past we had a fallback definition for _PAGE_KERNEL_ROX, but we
removed that in commit d82fd29c5a8c ("powerpc/mm: Distribute platform
specific PAGE and PMD flags and definitions") and added definitions
for each MMU family.

However we missed adding a definition for 64s, which was not really a
bug because it's currently not used.

But we'd like to use PAGE_KERNEL_ROX in a future patch so add a
definition now.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/include/asm/book3s/64/pgtable.h | 1 +
 1 file changed, 1 insertion(+)

v2: Unchanged.

diff --git a/arch/powerpc/include/asm/book3s/64/pgtable.h b/arch/powerpc/include/asm/book3s/64/pgtable.h
index 058601efbc8a..0c89977ec10b 100644
--- a/arch/powerpc/include/asm/book3s/64/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/64/pgtable.h
@@ -116,6 +116,7 @@
  */
 #define _PAGE_KERNEL_RW		(_PAGE_PRIVILEGED | _PAGE_RW | _PAGE_DIRTY)
 #define _PAGE_KERNEL_RO		 (_PAGE_PRIVILEGED | _PAGE_READ)
+#define _PAGE_KERNEL_ROX	 (_PAGE_PRIVILEGED | _PAGE_READ | _PAGE_EXEC)
 #define _PAGE_KERNEL_RWX	(_PAGE_PRIVILEGED | _PAGE_DIRTY |	\
 				 _PAGE_RW | _PAGE_EXEC)
 /*
-- 
2.25.1


             reply	other threads:[~2021-03-31  0:40 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-31  0:38 Michael Ellerman [this message]
2021-03-31  0:38 ` [PATCH v2 2/6] powerpc/pseries: Add key to flags in pSeries_lpar_hpte_updateboltedpp() Michael Ellerman
2021-03-31  0:38 ` [PATCH v2 3/6] powerpc/64s: Use htab_convert_pte_flags() in hash__mark_rodata_ro() Michael Ellerman
2021-03-31  0:38 ` [PATCH v2 4/6] powerpc/mm/64s/hash: Factor out change_memory_range() Michael Ellerman
2021-03-31  0:38 ` [PATCH v2 5/6] powerpc/mm/64s/hash: Add real-mode change_memory_range() for hash LPAR Michael Ellerman
2021-03-31  0:38 ` [PATCH v2 6/6] powerpc/mm/64s: Allow STRICT_KERNEL_RWX again Michael Ellerman
2021-04-10 14:28 ` [PATCH v2 1/6] powerpc/mm/64s: Add _PAGE_KERNEL_ROX Michael Ellerman

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