diff options
| author | Petr Tesarik <ptesarik@suse.com> | 2017-01-19 18:37:09 +0100 |
|---|---|---|
| committer | Simon Horman <horms@verge.net.au> | 2017-01-24 14:28:52 +0100 |
| commit | f63d8530b9b6a2d7e79b946e326e5a2197eb8f87 (patch) | |
| tree | 4bf5fcf2a1f25a74fcd423aaadaa0da6d88b9de9 /util_lib/compute_ip_checksum.c | |
| parent | 9da19c0a6f49b5577b147053f2c3226a8ce97d4e (diff) | |
ppc64: Reduce number of ELF LOAD segments
The number of program header table entries (e_phnum) is an Elf64_Half,
which is a 16-bit entity, i.e. the limit is 65534 entries (one entry is
reserved for NOTE). This is a hard limit, defined by the ELF standard.
It is possible that more LMBs (Logical Memory Blocks) are needed to
represent all RAM on some machines, and this field overflows, causing
an incomplete /proc/vmcore file.
This has actually happened on a machine with 31TB of RAM and an LMB size
of 256MB.
However, since there is usually no memory hole between adjacent LMBs, the
map can be "compressed", combining multiple adjacent into a single LOAD
segment.
Signed-off-by: Petr Tesarik <ptesarik@suse.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Diffstat (limited to 'util_lib/compute_ip_checksum.c')
0 files changed, 0 insertions, 0 deletions