[Nouveau] [Bug 26193] nouveau falls back to NoAccel on 9400M

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=26193





--- Comment #6 from Ted Phelps <phelps at pobox.com>  2010-01-24 16:40:33 PST ---
Brian: Yes, I am using a 64-bit system.

TTM_PAGE_FLAG_DMA32 is used only by ttm_tt_alloc_page(), where it causes
alloc_page() to be called with the __GFP_DMA32 flag set.  This is supposed to
cause it to return only pages in the first 4GB of RAM, so I'm baffled as to why
it's breaking anything.

FWIW, I only have 4GB of RAM in the machine, so in theory all of it could be
safe for 32-bit DMA.

I note that you're also using an x86-64 CPU, and I'd be curious to know if the
patch in comment #4 helps you.  If not, I should open a new bug report.

Thanks,
-Ted


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.