From: "tip-bot for Kirill A. Shutemov" <tipbot@zytor.com>
To: linux-tip-commits@vger.kernel.org
Cc: kirill.shutemov@linux.intel.com, mingo@kernel.org,
peterz@infradead.org, linux-kernel@vger.kernel.org,
dave.hansen@intel.com, akpm@linux-foundation.org,
torvalds@linux-foundation.org, hpa@zytor.com, tglx@linutronix.de,
luto@amacapital.net
Subject: [tip:x86/mm] x86/mm: Allow userspace have mappings above 47-bit
Date: Fri, 21 Jul 2017 02:40:51 -0700 [thread overview]
Message-ID: <tip-ee00f4a32a76ef631394f31d5b6028d50462b357@git.kernel.org> (raw)
In-Reply-To: <20170716225954.74185-8-kirill.shutemov@linux.intel.com>
Commit-ID: ee00f4a32a76ef631394f31d5b6028d50462b357
Gitweb: http://git.kernel.org/tip/ee00f4a32a76ef631394f31d5b6028d50462b357
Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
AuthorDate: Mon, 17 Jul 2017 01:59:53 +0300
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Fri, 21 Jul 2017 10:05:19 +0200
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>
---
arch/x86/include/asm/processor.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index 58fd40a3..ed26e14 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.
next prev parent reply other threads:[~2017-07-21 9:46 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-16 22:59 [PATCH 0/8] 5-level paging enabling for v4.14 Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 1/8] x86/dump_pagetables: Generalize address normalization Kirill A. Shutemov
2017-07-21 9:38 ` [tip:x86/mm] x86/mm/dump_pagetables: " tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 2/8] x86/dump_pagetables: Fix printout of p4d level Kirill A. Shutemov
2017-07-21 9:38 ` [tip:x86/mm] x86/mm/dump_pagetables: " tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 3/8] x86/xen: Redefine XEN_ELFNOTE_INIT_P2M using PUD_SIZE * PTRS_PER_PUD Kirill A. Shutemov
2017-07-17 5:45 ` Juergen Gross
2017-07-21 9:39 ` [tip:x86/mm] " tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 4/8] x86/mm: Rename tasksize_32bit/64bit to task_size_32bit/64bit Kirill A. Shutemov
2017-07-21 9:39 ` [tip:x86/mm] x86/mm: Rename tasksize_32bit/64bit to task_size_32bit/64bit() tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 5/8] x86/mpx: Do not allow MPX if we have mappings above 47-bit Kirill A. Shutemov
2017-07-21 9:40 ` [tip:x86/mm] " tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 6/8] x86/mm: Prepare to expose larger address space to userspace Kirill A. Shutemov
2017-07-21 9:40 ` [tip:x86/mm] " tip-bot for Kirill A. Shutemov
2017-07-16 22:59 ` [PATCH 7/8] x86/mm: Allow userspace have mapping above 47-bit Kirill A. Shutemov
2017-07-21 9:40 ` tip-bot for Kirill A. Shutemov [this message]
2017-07-16 22:59 ` [PATCH 8/8] x86: Enable 5-level paging support Kirill A. Shutemov
2017-07-21 9:41 ` [tip:x86/mm] x86: Enable 5-level paging support via CONFIG_X86_5LEVEL=y tip-bot for Kirill A. Shutemov
2017-07-20 7:57 ` [PATCH 0/8] 5-level paging enabling for v4.14 Kirill A. Shutemov
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