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| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-07-17 01:59:53 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-21 10:05:19 +0200 |
| commit | ee00f4a32a76ef631394f31d5b6028d50462b357 (patch) | |
| tree | f1aba6a50b885916b753989843a0ce952b39884b | |
| parent | b569bab78d8df157a6f91070af827753e4d1787c (diff) | |
| download | lwn-ee00f4a32a76ef631394f31d5b6028d50462b357.tar.gz lwn-ee00f4a32a76ef631394f31d5b6028d50462b357.zip | |
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 <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
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 <mingo@kernel.org>
| -rw-r--r-- | arch/x86/include/asm/processor.h | 4 |
1 files changed, 2 insertions, 2 deletions
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. |