diff options
| author | jerry.hoemann@hp.com <jerry.hoemann@hp.com> | 2013-05-07 10:14:54 -0600 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2013-05-13 15:02:44 +0100 |
| commit | 6af66ec5050bc0a5426192af0429240e8a87e9ca (patch) | |
| tree | c6e9802ff6229008337c0a164b2c3dfd991adafc /crypto/rng.c | |
| parent | 88933df65d758f1568359393cae98b972e1559ff (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 'crypto/rng.c')
0 files changed, 0 insertions, 0 deletions