BUG: IDE DMA doesn't work w/ x86 HighMem

2.4.21-pre3 Ross Biro 1 participant 1 message Jan 10, 2003

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Ross Biro

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2003-01-10 16:56 UTC #0 lore raw

Configure the 2.4.21-pre3 kernel with IDE and Highmem and when DMA is attempted you get a BUG from asm-i386/pci.h line 155 called from drives/ide/ide-dma.c line 282.

From the looks of it, the IDE driver has not been highmem enabled, but does get a high-mem device queue.

This is easily reproduced on a dual proc P3 with 2 Gigs of ram.

Ross