Where i can enable CONFIG_DMA_API_DEBUG? Can not find this in config. Computer hardlocked twice for this day after "dma_map_sg overflow" messages in dmesg without oopses when i try install windows in virtualbox to real sata hdd, magic key not work, so 2.6.29.1 completely unusable for me. I'm reset BIOS with jumper and can return to 2.6.28. Can anyone tell me solution, how debug and catch this damned bug? Anyone? I do anything you say! 2009/4/8 Michael Ellerman <michael@xxxxxxxxxxxxxx>: > On Wed, 2009-04-08 at 11:29 +0500, Данила Жукоцкий wrote: >> Dammit BUG is still here! >> >> Sorry guys, bug is STILL here, but it hard to trigger. After eight >> night hours network and 3ware raid activity (sata drive umounted, usb >> hdd unplugged) my dmesg full of "dma_map_sg overflow" messages. >> Computer work all-night without any iommu options in boot string, but >> DMA still leaking, as i see. Anybody, who understand how IOMMU driver >> work, can say me how i can set very small apperture size, about 4mb or >> something, because with default 64mb apperture i get leak only after >> couple of hours, so leak is small. And i again not understand source >> of leaking, it may be network, sata, usb, etc (i don't reboot computer >> after yesterday's IO tests to from usb\sata). So how i can painless >> catch the leak source without disabling subsystems one by one and >> hours-long tests? It is workstation, and i must do my job all-day with >> it. > > CONFIG_DMA_API_DEBUG might help - though I haven't used it myself yet. > > cheers > > -- > Michael Ellerman > OzLabs, IBM Australia Development Lab > > wwweb: http://michael.ellerman.id.au > phone: +61 2 6212 1183 (tie line 70 21183) > > We do not inherit the earth from our ancestors, > we borrow it from our children. - S.M.A.R.T Person > -- С уважением Данила Жукоцкий, системный администратор ЗАО "Роснефтегазмаш" -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
