summaryrefslogtreecommitdiffstats
path: root/arch/x86/mm/pat.c
diff options
context:
space:
mode:
authorYinghai Lu <yinghai@kernel.org>2008-10-28 12:39:23 -0700
committerIngo Molnar <mingo@elte.hu>2008-10-28 20:54:47 +0100
commitf96f57d91c2df75011d1e260c23edca429f37361 (patch)
tree21f416671c67afcf6c405f59dc955fddbfe0ff47 /arch/x86/mm/pat.c
parent87c6f40128f92621698f97a62d2ead5184d1dd97 (diff)
x86: fix init_memory_mapping for [dc000000 - e0000000) - v2
Impact: change over-mapping to precise mapping, fix /proc/meminfo output v2: fix less than 1G ram system handling when gart aperture is 0xdc000000 - 0xe0000000 it return 0xc0000000 - 0xe0000000 that is not right. this patch fix that will get exact mapping on 256g sytem with that aperture after patch LBSuse:~ # cat /proc/meminfo MemTotal: 264742432 kB MemFree: 263920628 kB Buffers: 1416 kB Cached: 24468 kB ... DirectMap4k: 5760 kB DirectMap2M: 3205120 kB DirectMap1G: 265289728 kB it is consistent to LBSuse:~ # cat /sys/kernel/debug/kernel_page_tables .. ---[ Low Kernel Mapping ]--- 0xffff880000000000-0xffff880000200000 2M RW GLB x pte 0xffff880000200000-0xffff880040000000 1022M RW PSE GLB x pmd 0xffff880040000000-0xffff8800c0000000 2G RW PSE GLB NX pud 0xffff8800c0000000-0xffff8800d7e00000 382M RW PSE GLB NX pmd 0xffff8800d7e00000-0xffff8800d7fa0000 1664K RW GLB NX pte 0xffff8800d7fa0000-0xffff8800d8000000 384K pte 0xffff8800d8000000-0xffff8800dc000000 64M pmd 0xffff8800dc000000-0xffff8800e0000000 64M RW PSE GLB NX pmd 0xffff8800e0000000-0xffff880100000000 512M pmd 0xffff880100000000-0xffff880800000000 28G RW PSE GLB NX pud 0xffff880800000000-0xffff880824600000 582M RW PSE GLB NX pmd 0xffff880824600000-0xffff8808247f0000 1984K RW GLB NX pte 0xffff8808247f0000-0xffff880824800000 64K RW PCD GLB NX pte 0xffff880824800000-0xffff880840000000 440M RW PSE GLB NX pmd 0xffff880840000000-0xffff884000000000 223G RW PSE GLB NX pud 0xffff884000000000-0xffff884028000000 640M RW PSE GLB NX pmd 0xffff884028000000-0xffff884040000000 384M pmd 0xffff884040000000-0xffff888000000000 255G pud 0xffff888000000000-0xffffc20000000000 58880G pgd Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm/pat.c')
0 files changed, 0 insertions, 0 deletions