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| author | Thomas Bogendoerfer <[email protected]> | 2019-09-24 15:20:51 +0000 |
|---|---|---|
| committer | Paul Burton <[email protected]> | 2019-10-02 21:11:30 +0000 |
| commit | bd848d1b9235d027e65fcc87de26cc1b02b41cc8 (patch) | |
| tree | 035176c008e48d3b95a5dd25c4c0e84b7c1abea0 /drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | |
| parent | MIPS: init: Fix reservation of memory between PHYS_OFFSET and mem start (diff) | |
| download | kernel-bd848d1b9235d027e65fcc87de26cc1b02b41cc8.tar.gz kernel-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 <[email protected]>
Signed-off-by: Paul Burton <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: James Hogan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c')
0 files changed, 0 insertions, 0 deletions