On 2016年05月12日 23:22, Peter Maydell wrote: > On 12 May 2016 at 16:01, Shannon Zhao <shannon.z...@linaro.org> wrote: >> On 2016年05月12日 22:35, Peter Maydell wrote: >>> Can you put the Image file somewhere I can download it, please? >> I just upload it to >> http://people.linaro.org/~shannon.zhao/ACPI_ARM/Image > > OK, I can reproduce with that, and I think I know what this is. > If we boot a "-bios" image then we don't apply the QEMU workaround > for booting buggy Linux images which puts all the interrupts into > Group 1, and it looks like a no-TZ-support UEFI doesn't > configure the interrupt groups either. So Linux ends up hanging > because the interrupt is group 0 but group 0 is disabled. > > If you apply this patch to your guest kernel you should find > it boots OK I think: > https://lkml.org/lkml/2016/5/10/297 > Yeah, it boots OK with this patch.
> (I'm not sure why the images I was running worked OK; I must > have been testing with an image that had that bugfix in it, > though I could have sworn I wasn't.) > > I don't really want to apply the QEMU workaround when we're > booting firmware images as well as raw kernels, but on the > other hand via-UEFI is kind of supposed to be the normal way > to boot in future. Perhaps we should drop the QEMU workaround > altogether, putting everybody on the same playing field... > Maybe and if people want to use old kernels, they could use the stable kernel after the kernel patch applied. Thanks, -- Shannon
