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Subject[PATCH] X86: __set_clr_pte_enc() miscalculates physical address
Date
__set_clr_pte_enc() miscalculates physical address to operate.
pfn is in unit of PG_LEVEL_4K, not PGL_LEVEL_{2M, 1G}.
Shift size to get physical address should be PAGE_SHIFT,
not page_level_shift().

Fixes: dfaaec9033b8 ("x86: Add support for changing memory encryption attribute in early boot")
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/mm/mem_encrypt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c
index 4b01f7dbaf30..ae78cef79980 100644
--- a/arch/x86/mm/mem_encrypt.c
+++ b/arch/x86/mm/mem_encrypt.c
@@ -262,7 +262,7 @@ static void __init __set_clr_pte_enc(pte_t *kpte, int level, bool enc)
if (pgprot_val(old_prot) == pgprot_val(new_prot))
return;

- pa = pfn << page_level_shift(level);
+ pa = pfn << PAGE_SHIFT;
size = page_level_size(level);

/*
--
2.25.1
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