19.12.2024 17:41, David Hildenbrand wrote:
KVM is not happy when starting a VM with weird RAM sizes:

   # qemu-system-s390x --enable-kvm --nographic -m 1234K
   qemu-system-s390x: kvm_set_user_memory_region: KVM_SET_USER_MEMORY_REGION
     failed, slot=0, start=0x0, size=0x244000: Invalid argument
   kvm_set_phys_mem: error registering slot: Invalid argument
   Aborted (core dumped)

Let's handle that in a better way by rejecting such weird RAM sizes
right from the start:

   # qemu-system-s390x --enable-kvm --nographic -m 1234K
   qemu-system-s390x: ram size must be multiples of 1 MiB

Shouldn't this one be picked for qemu-stable?  Seems like a good
bugfix to me.  Picked up for current stable releases for now, please
let me know if I shouldn't.

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