From 80d0969aa7832bfeb287cb22563a1ad08fea937d Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Wed, 9 Nov 2022 19:51:25 +0300 Subject: [PATCH] x86/mm: Fix CR3_ADDR_MASK 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 Signed-off-by: Dave Hansen Reviewed-by: Rick Edgecombe Reviewed-by: Alexander Potapenko Acked-by: Peter Zijlstra (Intel) Tested-by: Alexander Potapenko Link: https://lore.kernel.org/all/20221109165140.9137-2-kirill.shutemov%40linux.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 02c2cbda4a74e..a7f3d9100adb6 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) -- 2.30.2