habanalabs: restore vm_pgoff after mmap

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Due to using dma_mmap_coherent() to perform mmap of dma memory, we
had to clear the vm_pgoff field before calling that function.

However, that broke the userspace (profiler tool) as they relied
on searching the /proc/self/maps for these values to correctly
"disassemble" the topology recipe.

To re-enable that functionality, the driver can simply restore the
value of vm_pgoff before returning to userspace but after calling
dma_mmap_coherent().

Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

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Oded Gabbay 2020-10-29 18:38:31 +02:00

parent 66a76401c5

commit 28e052c952

1 changed files with 1 additions and 0 deletions

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drivers/misc/habanalabs/common/command_buffer.c

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