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H A D | panfrost_mmu.c | f45da820 Fri Feb 05 05:17:56 CST 2021 Boris Brezillon <boris.brezillon@collabora.com> drm/panfrost: Don't try to map pages that are already mapped
We allocate 2MB chunks at a time, so it might appear that a page fault has already been handled by a previous page fault when we reach panfrost_mmu_map_fault_addr(). Bail out in that case to avoid mapping the same area twice.
Cc: <stable@vger.kernel.org> Fixes: 187d2929206e ("drm/panfrost: Add support for GPU heap allocations") Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210205111757.585248-3-boris.brezillon@collabora.com
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