From ee00f4a32a76ef631394f31d5b6028d50462b357 Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Mon, 17 Jul 2017 01:59:53 +0300 Subject: x86/mm: Allow userspace have mappings above 47-bit All bits and pieces are now in place and we can allow userspace to have VMAs above 47 bits. Signed-off-by: Kirill A. Shutemov Cc: Andrew Morton Cc: Andy Lutomirski Cc: Dave Hansen Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-arch@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20170716225954.74185-8-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar --- arch/x86/include/asm/processor.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'arch/x86/include/asm/processor.h') diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h index 58fd40a3bf52..ed26e14cfc2f 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -850,9 +850,9 @@ static inline void spin_lock_prefetch(const void *x) * particular problem by preventing anything from being mapped * at the maximum canonical address. */ -#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE) +#define TASK_SIZE_MAX ((1UL << __VIRTUAL_MASK_SHIFT) - PAGE_SIZE) -#define DEFAULT_MAP_WINDOW TASK_SIZE_MAX +#define DEFAULT_MAP_WINDOW ((1UL << 47) - PAGE_SIZE) /* This decides where the kernel will search for a free chunk of vm * space during mmap's. -- cgit