Date: Sat, 13 Jan 2018 17:55:22 +0000 (UTC) From: Conrad Meyer <cem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r327932 - head/sys/x86/include Message-ID: <201801131755.w0DHtM2c068067@repo.freebsd.org>
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Author: cem Date: Sat Jan 13 17:55:22 2018 New Revision: 327932 URL: https://svnweb.freebsd.org/changeset/base/327932 Log: amd64: Add a 48-bit MAXADDR constant Some devices (e.g., ccp(4) -- to be committed) can only access the low 48 bits of physical memory. Reviewed by: markj Sponsored by: Dell EMC Isilon Modified: head/sys/x86/include/bus.h Modified: head/sys/x86/include/bus.h ============================================================================== --- head/sys/x86/include/bus.h Sat Jan 13 17:52:55 2018 (r327931) +++ head/sys/x86/include/bus.h Sat Jan 13 17:55:22 2018 (r327932) @@ -118,6 +118,7 @@ #define BUS_SPACE_MAXADDR_24BIT 0xFFFFFF #define BUS_SPACE_MAXADDR_32BIT 0xFFFFFFFF #if defined(__amd64__) || defined(PAE) +#define BUS_SPACE_MAXADDR_48BIT 0xFFFFFFFFFFFFULL #define BUS_SPACE_MAXADDR 0xFFFFFFFFFFFFFFFFULL #else #define BUS_SPACE_MAXADDR 0xFFFFFFFF
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