Thank you very much. I'll try it out. Best, Norman
On Thu, May 26, 2022 at 4:18 PM Peter Maydell <peter.mayd...@linaro.org> wrote: > On Thu, 26 May 2022 at 07:45, Jiatong Shen <yshxxsjt...@gmail.com> wrote: > > I am trying to run qemu-system-aarch64 on a Kylin based machine, the > host kernel version is 4.19. qemu is versioned 4.2.1. The command I am > running is "qemu-system-aarch64 -cpu host -enable-kvm -machine virt -m > size=4G,maxmem=512G". This command failed with "qemu-system-aarch64: -m and > ,maxmem option values require an IPA range (41 bits) larger than the one > supported by the host (40 bits)". > > I am confused because 2^40 is around 1TB which is greater than 512G. > Would be very appreciated to get some insights. Thank you very much for the > help in advance. > > That's a rather old QEMU version. We reworked the handling of > highmem in the virt board for the 7.0 release -- could you > test whether that also has this problem? (I don't have a > 40 bit PA host to hand but I did a quick simulation with > a gdb session and I think 7.0 should fit everything into 40 bits > with those command line options.) > > thanks > -- PMM > -- Best Regards, Jiatong Shen
