On 10.03.20 17:54, Christian Borntraeger wrote:
> For s390 the guest memory size must be 1M aligned. I need something like the following to make this work:
>
> diff --git a/tools/testing/selftests/kvm/demand_paging_test.c b/tools/testing/selftests/kvm/demand_paging_test.c
> index c1e326d3ed7f..f85ec3f01a35 100644
> --- a/tools/testing/selftests/kvm/demand_paging_test.c
> +++ b/tools/testing/selftests/kvm/demand_paging_test.c
> @@ -164,6 +164,10 @@ static struct kvm_vm *create_vm(enum vm_guest_mode mode, int vcpus,
> pages += ((2 * vcpus * vcpu_memory_bytes) >> PAGE_SHIFT_4K) /
> PTES_PER_4K_PT;
> pages = vm_adjust_num_guest_pages(mode, pages);
> +#ifdef __s390x__
> + /* s390 requires 1M aligned guest sizes */
> + pages = (pages + 255) & ~0xff;
> +#endif
>
> pr_info("Testing guest mode: %s\n", vm_guest_mode_string(mode));
>
>
> any better idea how to do that?
>
Without an ALIGN_UP() and/or PAGES_PER_SEGMENT this won't get any nicer
I guess.
--
Thanks,
David / dhildenb
