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Subject[PATCH -fixes 2/2] riscv: Fix set_direct_map_default_noflush() to reset _PAGE_EXEC
Date
When resetting the linear mapping permissions, we must make sure that we
clear the X bit so that do not end up with WX mappings (since we set
PAGE_KERNEL).

Fixes: 395a21ff859c ("riscv: add ARCH_HAS_SET_DIRECT_MAP support")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
---
arch/riscv/mm/pageattr.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/mm/pageattr.c b/arch/riscv/mm/pageattr.c
index 96cbda683936..01398fee5cf8 100644
--- a/arch/riscv/mm/pageattr.c
+++ b/arch/riscv/mm/pageattr.c
@@ -383,7 +383,7 @@ int set_direct_map_invalid_noflush(struct page *page)
int set_direct_map_default_noflush(struct page *page)
{
return __set_memory((unsigned long)page_address(page), 1,
- PAGE_KERNEL, __pgprot(0));
+ PAGE_KERNEL, __pgprot(_PAGE_EXEC));
}

#ifdef CONFIG_DEBUG_PAGEALLOC
--
2.39.2
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