[PATCHv3 1/8] x86/mm: Fix CR3_ADDR_MASK

Kirill A. Shutemov
2022-06-10T14:35:39Z

The mask must not include bits above physical address mask. These bits
are reserved and can be used for other things. Bits 61 and 62 are used
for Linear Address Masking.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
---
arch/x86/include/asm/processor-flags.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/include/asm/processor-flags.h b/arch/x86/include/asm/processor-flags.h
index 02c2cbda4a74..a7f3d9100adb 100644
--- a/arch/x86/include/asm/processor-flags.h
+++ b/arch/x86/include/asm/processor-flags.h
@@ -35,7 +35,7 @@
*/
#ifdef CONFIG_X86_64
/* Mask off the address space ID and SME encryption bits. */
-#define CR3_ADDR_MASK __sme_clr(0x7FFFFFFFFFFFF000ull)
+#define CR3_ADDR_MASK __sme_clr(PHYSICAL_PAGE_MASK)
#define CR3_PCID_MASK 0xFFFull
#define CR3_NOFLUSH BIT_ULL(63)

--
2.35.1