On Wed, 12 Dec 2007 15:28:36 +0000 Keith Whitwell <[EMAIL PROTECTED]> wrote:
> Jerome Glisse wrote: > > Hi, > > > > I am wondering if allowing user to ask for partial validation > > (ie only validate a part of a bo object) might be usefull in > > case of userspace sub allocator and likely in others case when > > you know for instance that you only need to access a small part > > of a bo. Such partial things could also be usefull for mapping > > a bo asking only to map a part of it. I am throwing the idea, > > i haven't yet enough code to test whether this kind of optimization > > might be worthfull for radeon hw (and possibly others) > > I think if you want this, the way to get it is to abandon the userspace > suballocator and use kernel buffers directly. > > To have the kernel manage partial buffers doesn't make sense - if this > is what you want, tell the kernel about the little buffers and let it > manage them directly. > > Keith True this kill usefullness of userspace suballocator. Still i think that allowing to only map partial part of a bo might be usefull when you just want to update a part of a buffer this way you can shrink down the amount of data that you might have to move btw differents place. Cheers, Jerome Glisse ------------------------------------------------------------------------- SF.Net email is sponsored by: Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
