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| /freebsd-10.2-release/sys/dev/dcons/ | ||
| H A D | dcons_crom.c | diff 186876 Wed Jan 07 21:34:47 MST 2009 marius Check the return values of contigmalloc(9) as well as bus_dma(9) functions and stop attaching of dcons(4) and dcons_crom(4) if they indicate failure. This fixes a panic seen on sparc64 machines with no free physical memory in the requested 32-bit region but still doesn't make dcons(4)/dcons_crom(4) these work. I think the latter can be fixed by simply specifying ~0UL as the upper limit for contigmalloc(9) and letting the bounce pages and the IOMMU respectively handle limitations of the DMA engine. I didn't want to change that without the consensus of simokawa@ though, who unfortunately didn't reply so far. MFC after: 1 week |
| H A D | dcons_os.c | diff 186876 Wed Jan 07 21:34:47 MST 2009 marius Check the return values of contigmalloc(9) as well as bus_dma(9) functions and stop attaching of dcons(4) and dcons_crom(4) if they indicate failure. This fixes a panic seen on sparc64 machines with no free physical memory in the requested 32-bit region but still doesn't make dcons(4)/dcons_crom(4) these work. I think the latter can be fixed by simply specifying ~0UL as the upper limit for contigmalloc(9) and letting the bounce pages and the IOMMU respectively handle limitations of the DMA engine. I didn't want to change that without the consensus of simokawa@ though, who unfortunately didn't reply so far. MFC after: 1 week |
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