From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f198.google.com (mail-pf0-f198.google.com [209.85.192.198]) by kanga.kvack.org (Postfix) with ESMTP id EAEC56B02FD for ; Thu, 22 Jun 2017 08:26:20 -0400 (EDT) Received: by mail-pf0-f198.google.com with SMTP id r70so13056070pfb.7 for ; Thu, 22 Jun 2017 05:26:20 -0700 (PDT) Received: from mga01.intel.com (mga01.intel.com. [192.55.52.88]) by mx.google.com with ESMTPS id s2si1034724pfd.455.2017.06.22.05.26.20 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 22 Jun 2017 05:26:20 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCH 5/5] x86/mm: Allow userspace have mapping above 47-bit Date: Thu, 22 Jun 2017 15:26:08 +0300 Message-Id: <20170622122608.80435-6-kirill.shutemov@linux.intel.com> In-Reply-To: <20170622122608.80435-1-kirill.shutemov@linux.intel.com> References: <20170622122608.80435-1-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds , Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: Andi Kleen , Dave Hansen , Andy Lutomirski , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" All bits and pieces now in place and we can allow userspace to have VMAs above 47-bit. Signed-off-by: Kirill A. Shutemov --- 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 42b87689ecd7..0ed01fdd7fa2 100644 --- a/arch/x86/include/asm/processor.h +++ b/arch/x86/include/asm/processor.h @@ -844,9 +844,9 @@ 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. -- 2.11.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org