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authorYinghai Lu <yinghai@kernel.org>2011-02-18 11:30:30 +0000
committerH. Peter Anvin <hpa@zytor.com>2011-03-19 11:58:19 -0700
commite5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e (patch)
tree7e47d9bd25670ed0ed34bc572de42c5640454695 /arch/x86/kernel/head64.c
parent4981d01eada5354d81c8929d5b2836829ba3df7b (diff)
x86: Cleanup highmap after brk is concluded
Now cleanup_highmap actually is in two steps: one is early in head64.c and only clears above _end; a second one is in init_memory_mapping() and tries to clean from _brk_end to _end. It should check if those boundaries are PMD_SIZE aligned but currently does not. Also init_memory_mapping() is called several times for numa or memory hotplug, so we really should not handle initial kernel mappings there. This patch moves cleanup_highmap() down after _brk_end is settled so we can do everything in one step. Also we honor max_pfn_mapped in the implementation of cleanup_highmap. Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> LKML-Reference: <alpine.DEB.2.00.1103171739050.3382@kaball-desktop> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/head64.c')
-rw-r--r--arch/x86/kernel/head64.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 2d2673c28af..5655c2272ad 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -77,9 +77,6 @@ void __init x86_64_start_kernel(char * real_mode_data)
/* Make NULL pointers segfault */
zap_identity_mappings();
- /* Cleanup the over mapped high alias */
- cleanup_highmap();
-
max_pfn_mapped = KERNEL_IMAGE_SIZE >> PAGE_SHIFT;
for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) {