Hi Alex! Nice to meet you again... On Thu, 1 Dec 2022 00:32:07 +0100 Alexander Graf <agraf@xxxxxxxxx> wrote: > Hi Isaac, > > On 30.11.22 19:48, Isaac Manjarres wrote: > > On Tue, Nov 08, 2022 at 11:03:31AM +0100, Christoph Hellwig wrote: > >> On Tue, Nov 08, 2022 at 09:52:15AM +0000, Catalin Marinas wrote: > >>> Since it's hard to guess the optimal swiotlb buffer for such platforms, > >>> I think a follow-up step would be to use the DMA coherent pool for > >>> bouncing if no swiotlb buffer is available. At least the pool can grow > >>> dynamically. Yet another option would be to increase the swiotlb buffer > >>> at run-time but it has an overhead for is_swiotlb_buffer(). > >> Alex said he wanted to look into growing the swiotlb buffer on demand > >> for other reason, so adding him to Cc to check if there has been any > >> progress on that. > > Hi Alex, > > > > Did you get a chance to look into this? If so, have you been able to > > make progress on being able to grow the SWIOTLB buffer on demand? > > > I've been slightly under water and haven't been able to look at this yet > :). It's on my list, but will probably be a while until I get to it. > Would you be interested in having a first try? All right, I have just found this thread now after having sent my own patch series to make SWIOTLB dynamic. I hope you don't mind. I didn't want to "steal" the project from you. Petr T
