mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
0e43b8da15
The HOST1X_CHANNEL_DMAEND is an offset relative to the value written to the HOST1X_CHANNEL_DMASTART register, but it is currently treated as an absolute address. This can cause SMMU faults if the CDMA fetches past a pushbuffer's IOMMU mapping. Properly setting the DMAEND prevents the CDMA from fetching beyond that address and avoid such issues. This is currently not observed because a whole (almost) page of essentially scratch space absorbs any excessive prefetching by CDMA. However, changing the number of slots in the push buffer can trigger these SMMU faults. Signed-off-by: Thierry Reding <treding@nvidia.com> |
||
|---|---|---|
| .. | ||
| cdma_hw.c | ||
| channel_hw.c | ||
| debug_hw.c | ||
| debug_hw_1x01.c | ||
| debug_hw_1x06.c | ||
| host1x01.c | ||
| host1x01.h | ||
| host1x01_hardware.h | ||
| host1x02.c | ||
| host1x02.h | ||
| host1x02_hardware.h | ||
| host1x04.c | ||
| host1x04.h | ||
| host1x04_hardware.h | ||
| host1x05.c | ||
| host1x05.h | ||
| host1x05_hardware.h | ||
| host1x06.c | ||
| host1x06.h | ||
| host1x06_hardware.h | ||
| host1x07.c | ||
| host1x07.h | ||
| host1x07_hardware.h | ||
| hw_host1x01_channel.h | ||
| hw_host1x01_sync.h | ||
| hw_host1x01_uclass.h | ||
| hw_host1x02_channel.h | ||
| hw_host1x02_sync.h | ||
| hw_host1x02_uclass.h | ||
| hw_host1x04_channel.h | ||
| hw_host1x04_sync.h | ||
| hw_host1x04_uclass.h | ||
| hw_host1x05_channel.h | ||
| hw_host1x05_sync.h | ||
| hw_host1x05_uclass.h | ||
| hw_host1x06_channel.h | ||
| hw_host1x06_hypervisor.h | ||
| hw_host1x06_uclass.h | ||
| hw_host1x06_vm.h | ||
| hw_host1x07_channel.h | ||
| hw_host1x07_hypervisor.h | ||
| hw_host1x07_uclass.h | ||
| hw_host1x07_vm.h | ||
| intr_hw.c | ||
| syncpt_hw.c | ||