From: "Wen, Kui" <[email protected]> When user space does mmap, kernel would map the physical page of local memory to virtual memory address. The r->sgt.pfn is page address allocated from local memory and the local memory region is from 0 to LMEM size. Hence the r->sgt.pfn is possible to be 0, but this is normal case.
Signed-off-by: Kui Wen <[email protected]> --- drivers/gpu/drm/i915/i915_mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_mm.c b/drivers/gpu/drm/i915/i915_mm.c index 43039dc8c607..dcf6b3e5bfdf 100644 --- a/drivers/gpu/drm/i915/i915_mm.c +++ b/drivers/gpu/drm/i915/i915_mm.c @@ -62,7 +62,7 @@ static int remap_sg(pte_t *pte, unsigned long addr, void *data) { struct remap_pfn *r = data; - if (GEM_WARN_ON(!r->sgt.pfn)) + if (GEM_WARN_ON(!use_dma(r->iobase) && !r->sgt.pfn)) return -EINVAL; /* Special PTE are not associated with any struct page */ -- 2.26.2 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
