On Fri, Oct 31, 2025 at 06:38:57AM +0100, Lukas Wunner wrote: > On Thu, Oct 30, 2025 at 10:47:18AM -0400, Rodrigo Vivi wrote: > > On Tue, Oct 28, 2025 at 03:13:15PM -0400, Rodrigo Vivi wrote: > > > On Mon, Sep 29, 2025 at 05:44:12PM -0400, Rodrigo Vivi wrote: > > > > > > Hey Dave, Sima, AMD folks, Qualcomm folks, > > > > + Netlink list and maintainers to get some feedback on the netlink usage > > proposed here. > > > > Specially to check if there's any concern with CPER blob going through > > netlink or if there's any size limitation or concern. > > How large are those blobs?
The honest answer is: I don't know! By spec it has no limitation, but since in general CPER is made for FW storage it is usually not really big. >From what I could see usual max seems to be around 64Kb. But for our case we are looking to something much smaller than that. > If the netlink message exceeds PAGE_SIZE > because of the CPER blob, a workaround might be to attach it to the > skb as fragments with skb_add_rx_frag(). Yeap, I imagined that there should be a way. Thank you > > Thanks, > > Lukas
