nv-tegra-mirror/linux-nvgpu
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nvgpu.git synced 2025-12-22 17:36:20 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: nvgpu: Fix address space initialization in page_table unit test

Browse Source 
Unit tests in page_table were initializing the VM with a kernel_reserved
section that was slightly smaller than expected. Then, when the fixed
alloc to support semaphores was done, the fixed address used was actually
below the start of the kernel address space. As a result this caused an
overflow in the base shift in the buddy allocator responsible for
managing the fixed alloc.

Change-Id: I4e688d418262ac8d9d4b66b46bd32ca5456d95e8
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2130433
Reviewed-by: Philip Elcan <pelcan@nvidia.com>
Tested-by: Philip Elcan <pelcan@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Alex Waterman
2019-06-04 08:08:06 -07:00
committed by mobile promotions
parent 0352bebc07
commit c74b89194d
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
userspace/units/mm/gmmu/page_table/page_table.c
View File

@@ -974,7 +974,7 @@ static struct vm_gk20a *init_test_req_vm(struct gk20a *g)
kernel_reserved = 4 * SZ_1G; kernel_reserved = 4 * SZ_1G;
return nvgpu_vm_init(g, g->ops.mm.gmmu.get_default_big_page_size(), return nvgpu_vm_init(g, g->ops.mm.gmmu.get_default_big_page_size(),
low_hole, kernel_reserved - low_hole, low_hole, kernel_reserved,
aperture_size, big_pages, true, true, "testmem"); aperture_size, big_pages, true, true, "testmem");
} }