lkml.org 
[lkml]   [2008]   [Feb]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
Subjectpci_alloc_consistent and memory >= 4GB pre CONFIG_ZONE_DMA32
Hey,

I've a problem with pci_alloc_consistent with Kernel 2.6.5 and memory >= 4GB on a x86_64 machine.
The device can't use the dma_addr which I retrieve from pci_alloc_consistent.
But if the machine has less then 4GB it works fine.

How can I prove that the adress I get from pci_alloc_consistent is dma compatible?
Should pci_alloc_consistent not be used in environments before CONFIG_ZONE_DMA32?

Is there a better way to get dma compatible memory since 2.6.1 (except using kmalloc and GFP_DMA, cause just below 16MB is not enough memory)?

I'm very appreciative for any answer / help.

Ciao Thilo


\
 
 \ /
  Last update: 2008-02-01 17:35    [W:0.232 / U:0.388 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site