On Wed, 14 May 2014 10:15:38 +0100, "Jon Medhurst (Tixy)" <tixy@xxxxxxxxxx> wrote: > On Sun, 2014-03-02 at 13:40 +0800, Grant Likely wrote: > > On Fri, 28 Feb 2014 14:42:50 +0100, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote: > > > This patch adds code for automated assignment of reserved memory regions > > > to struct device. reserved_mem->ops->device_init()/device_cleanup() > > > callbacks are called to perform reserved memory driver specific > > > initialization and cleanup > > > > > > Based on previous code provided by Josh Cartwright <joshc@xxxxxxxxxxxxxx> > > > > > > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> > > > > Hi Marek, > > > > I've not applied this one yet, only because there is still the open > > issue of whether or not these functions should be called from drivers or > > from core code. I don't actually have any problems with the content of > > this patch. Once the user is sorted out I'll merge it. > > Has anything more come of these patches? I see some of the series is now > in Linux 3.15, but the actual patches to let people use the feature > aren't there yet, namely patches 5 though 8. > > My personal immediate interest in these is as a mechanism on arm64 to > limit CMA to a region of memory that is actually DMA-able devices (e.g. > below 4GB for 32-bit devices without an iommu). > > For reference, the mail archives for this series is at > http://lkml.org/lkml/2014/2/28/237 IIRC, the issue I have with patch 5-8 is that I don't like the driver core going off and doing automagical things to attach regions to devices. I've not seen any more discussion on this topic since I merged the patches I was okay with, but I may have missed something. g. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
