Re: [PATCH] introduce config option to disable DMA zone on i386

From: Robert Hancock
Date: Thu Dec 28 2006 - 15:13:08 EST

Arjan van de Ven wrote:
...but Marcelo's patch doesn't implement anything of that kind....
In addition, many ISA bus drivers do not use the DMA API *at all*
currently. If you want to fix them all up, great! But somehow I doubt
those will get fixed in the next decade.. they've been like this for at
least half a decade or longer :-)

Point being, if this doesn't already work it's likely a bug even without this patch. And drivers that don't use the DMA API should at least be allocating memory with GFP_DMA which should fail if that zone doesn't contain any memory (and if not, that's likely a bug as well).

Robert Hancock Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@xxxxxxxxxxxxx
Home Page:

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at