On Tue, Aug 25, 2020 at 10:27 AM Michael Neises <neisesmich...@gmail.com> wrote: > > Hello, > > I'm trying to build a camkes app, but when I attempt to run it on an > Odroid-xu4, > I get the following error just before the boot halts: > > "Ran out of untyped memory while creating objects" > > I've narrowed the error down to two calls to a this function: > https://github.com/SEL4PROJ/camkes-vm-linux/blob/dc354df3222766b9d36672575194e33f4edda9ac/vm-linux-helpers.cmake#L155 > > When I use only one call, the image boots nicely. If I use both calls, I > get the above error. My understanding is that this function simply adds an > executable to the filesystem, so I'm not sure how to begin debugging this. > Is it possible that the filesystem is actually "too big" for sel4 to boot > successfully? >
This is likely the issue. This is the odroid-xu4 memory definition that Untypeds are created out of (https://github.com/seL4/seL4/blob/master/src/plat/exynos5/overlay-exynos5422.dts#L38): /* HACK: 0xe0000000..0xff000000 is the largest contiguous region * in the kernel window; we clamp to that and discard memory * after the ASID PD hole (0xff200000..0xfff00000). This is a * workaround for userspace tools (hardware_gen, elfloader, etc) * which are not yet aware of the memory hole. */ memory@40000000 { reg = <0x60000000 0x1f000000>; }; vm-memory@40000000 { reg = <0x40000000 0x20000000>; }; That's setting the memory node to ~512MiB, so if your capDL spec is trying to declare more objects than can be created by that amount of memory, the loader will run out of untypeds and generate the error that you see. Assuming that the odroid-xu4 has 2GiB of memory available, there is still 1.5GiB that is accessible as device untyped (which can be used to create memory mappings, but not to create other kernel objects such as CNodes) but by default the capDL loader doesn't currently know how to use these for creating pages out of. > Please advise! > > Best, > Michael Neises > _______________________________________________ > Devel mailing list > Devel@sel4.systems > https://sel4.systems/lists/listinfo/devel _______________________________________________ Devel mailing list Devel@sel4.systems https://sel4.systems/lists/listinfo/devel
