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| author |   Thomas Bogendoerfer <tbogendoerfer@suse.de> | 2019-09-24 17:20:51 +0200 |
|---|---|---|
| committer |   Paul Burton <paul.burton@mips.com> | 2019-10-02 14:11:30 -0700 |
| commit | bd848d1b9235d027e65fcc87de26cc1b02b41cc8 (patch) | |
| tree | 035176c008e48d3b95a5dd25c4c0e84b7c1abea0 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | MIPS: init: Fix reservation of memory between PHYS_OFFSET and mem start (diff) | |
| download | wireguard-linux-bd848d1b9235d027e65fcc87de26cc1b02b41cc8.tar.xz wireguard-linux-bd848d1b9235d027e65fcc87de26cc1b02b41cc8.zip | |
MIPS: init: Prevent adding memory before PHYS_OFFSET
On some SGI machines (IP28 and IP30) a small region of memory is mirrored
to pyhsical address 0 for exception vectors while rest of the memory
is reachable at a higher physical address. ARC PROM marks this
region as reserved, but with commit a94e4f24ec83 ("MIPS: init: Drop
boot_mem_map") this chunk is used, when searching for start of ram,
which breaks at least IP28 and IP30 machines. To fix this
add_region_memory() checks for start address < PHYS_OFFSET and ignores
these chunks.
Fixes: a94e4f24ec83 ("MIPS: init: Drop boot_mem_map")
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions