On 08/05/2015, 01:52 PM, Jiri Slaby wrote: >> Yes, I see: >> sdhci-pci 0000:02:00.0: swiotlb buffer is full (sz: 65536 bytes) >> after some time. The driver falls back to non-DMA transfers after that. >> It also generates a warning about that: >> WARNING: CPU: 0 PID: 0 at drivers/mmc/host/sdhci.c:857 >> sdhci_prepare_data+0x8ec/0x900 [sdhci]() > > I am attaching a debug patch and a debug log. You can see where > 0x00000000fffb0000 and 0x00000000fffe0000 is leaked. It is when 'invalid > cookie' error happens. And you could see the cookie handling is totally bogus. With this rewrite, I no longer see the problems. Could you confirm it still does the good job with respect to performance -- the numbers you mentioned in your commit. Ulf, what do you think about the attached patch? (Do not look at the commented info prints.) thanks, -- js suse labs
Attachment:
fix.patch
Description: application/mbox
