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authorjerry.hoemann@hp.com <jerry.hoemann@hp.com>2013-05-07 10:14:54 -0600
committerBen Hutchings <ben@decadent.org.uk>2013-05-13 15:02:44 +0100
commit6af66ec5050bc0a5426192af0429240e8a87e9ca (patch)
treec6e9802ff6229008337c0a164b2c3dfd991adafc /virt
parent88933df65d758f1568359393cae98b972e1559ff (diff)
x86/mm: account for PGDIR_SIZE alignment
Patch for 3.0-stable. Function find_early_table_space removed upstream. Fixes panic in alloc_low_page due to pgt_buf overflow during init_memory_mapping. find_early_table_space sizes pgt_buf based upon the size of the memory being mapped, but it does not take into account the alignment of the memory. When the region being mapped spans a 512GB (PGDIR_SIZE) alignment, a panic from alloc_low_pages occurs. kernel_physical_mapping_init takes into account PGDIR_SIZE alignment. This causes an extra call to alloc_low_page to be made. This extra call isn't accounted for by find_early_table_space and causes a kernel panic. Change is to take into account PGDIR_SIZE alignment in find_early_table_space. Signed-off-by: Jerry Hoemann <jerry.hoemann@hp.com> Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions