From: Ingo Molnar Date: Wed, 30 Jan 2008 12:32:54 +0000 (+0100) Subject: x86: add PWT to NOCACHE flags X-Git-Tag: v2.6.25-rc1~1143^2~368 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82bc03fc158e28c90d7ed9919410776039cb4e14;p=linux-2.6 x86: add PWT to NOCACHE flags add PWT bit to NOCACHE flags. No real difference to CPUs, but needed later for PAT. Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- diff --git a/include/asm-x86/pgtable_32.h b/include/asm-x86/pgtable_32.h index a8be1ee15a..16da5d5cce 100644 --- a/include/asm-x86/pgtable_32.h +++ b/include/asm-x86/pgtable_32.h @@ -156,7 +156,7 @@ void paging_init(void); extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC; #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) -#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD) +#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h index 3f280105d7..9c9cddf513 100644 --- a/include/asm-x86/pgtable_64.h +++ b/include/asm-x86/pgtable_64.h @@ -189,13 +189,13 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long #define __PAGE_KERNEL_EXEC \ (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) #define __PAGE_KERNEL_NOCACHE \ - (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_ACCESSED | _PAGE_NX) + (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_PWT | _PAGE_ACCESSED | _PAGE_NX) #define __PAGE_KERNEL_RO \ (_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX) #define __PAGE_KERNEL_VSYSCALL \ (_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) #define __PAGE_KERNEL_VSYSCALL_NOCACHE \ - (_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_PCD) + (_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_PCD | _PAGE_PWT) #define __PAGE_KERNEL_LARGE \ (__PAGE_KERNEL | _PAGE_PSE) #define __PAGE_KERNEL_LARGE_EXEC \