Date: Sun, 23 Feb 2014 18:57:51 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-projects@freebsd.org Subject: svn commit: r262381 - projects/arm64/sys/arm64/include Message-ID: <201402231857.s1NIvpPx077337@svn.freebsd.org>
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Author: andrew Date: Sun Feb 23 18:57:50 2014 New Revision: 262381 URL: http://svnweb.freebsd.org/changeset/base/262381 Log: Update to reflect the number of virtual address bits we use Modified: projects/arm64/sys/arm64/include/vmparam.h Modified: projects/arm64/sys/arm64/include/vmparam.h ============================================================================== --- projects/arm64/sys/arm64/include/vmparam.h Sun Feb 23 18:49:52 2014 (r262380) +++ projects/arm64/sys/arm64/include/vmparam.h Sun Feb 23 18:57:50 2014 (r262381) @@ -122,17 +122,19 @@ /** * Address space layout. * - * ARMv8 implements a 47 bit virtual address space. The address space is + * ARMv8 implements up to a 47 bit virtual address space. The address space is * split into 2 regions at each end of the 64 bit address space, with an * out of range "hole" in the middle. * + * We limit the size of the two spaces to 39 bits each. + * * Upper region: 0xffffffffffffffff - * 0xffff800000000000 + * 0xffffff8000000000 * - * Hole: 0xffff7fffffffffff - * 0x0000800000000000 + * Hole: 0xffffff7fffffffff + * 0x0000008000000000 * - * Lower region: 0x00007fffffffffff + * Lower region: 0x0000007fffffffff * 0x0000000000000000 * * We use the upper region for the kernel, and the lower region for userland. @@ -161,11 +163,11 @@ #define VM_MIN_ADDRESS (0x0000000000000000UL) #define VM_MAX_ADDRESS (0xffffffffffffffffUL) -#define VM_MIN_KERNEL_ADDRESS (0xffff800000000000UL) +#define VM_MIN_KERNEL_ADDRESS (0xffffff8000000000UL) #define VM_MAX_KERNEL_ADDRESS (vm_max_kernel_address) #define VM_MIN_USER_ADDRESS (0x0000000000000000UL) -#define VM_MAX_USER_ADDRESS (0x0000800000000000UL) +#define VM_MAX_USER_ADDRESS (0x0000008000000000UL) #define VM_MINUSER_ADDRESS (VM_MIN_USER_ADDRESS) #define VM_MAXUSER_ADDRESS (VM_MAX_USER_ADDRESS)
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