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| author | Minfei Huang <mnfhuang@gmail.com> | 2015-07-12 20:18:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-09-29 19:26:06 +0200 |
| commit | f48b9555a631b2363feb0be735f4d608b4c72e3c (patch) | |
| tree | 2babef02957f7b768a6a4cab8cd7df89001ffa53 /arch | |
| parent | 397995fe3a36cf86913f724ee1d1933443e86d06 (diff) | |
| download | lwn-f48b9555a631b2363feb0be735f4d608b4c72e3c.tar.gz lwn-f48b9555a631b2363feb0be735f4d608b4c72e3c.zip | |
x86/mm: Initialize pmd_idx in page_table_range_init_count()
commit 9962eea9e55f797f05f20ba6448929cab2a9f018 upstream.
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: 719272c45b82 '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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/mm/init_32.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c index c8140e12816a..c23ab1ee3a9a 100644 --- a/arch/x86/mm/init_32.c +++ b/arch/x86/mm/init_32.c @@ -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); |