Commit 9962eea9 authored Jul 12, 2015 by Minfei Huang Committed by Thomas Gleixner Jul 20, 2015

x86/mm: Initialize pmd_idx in page_table_range_init_count()



The variable pmd_idx is not initialized for the first iteration of the
for loop.

Assign the proper value which indexes the start address.

Fixes: 719272c4 'x86, mm: only call early_ioremap_page_table_range_init() once'
Signed-off-by: Minfei Huang <mnfhuang@gmail.com>
Cc: tony.luck@intel.com
Cc: wangnan0@huawei.com
Cc: david.vrabel@citrix.com
Reviewed-by:  <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1436703522-29552-1-git-send-email-mhuang@redhat.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 7ea402d0

arch/x86/mm/init_32.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -137,6 +137,7 @@ page_table_range_init_count(unsigned long start, unsigned long end)

		vaddr = start;
		pgd_idx = pgd_index(vaddr);
		pmd_idx = pmd_index(vaddr);

		for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd_idx++) {
		for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);