Re: [PATCH 02/20] KVM: selftests: Bump the minimum GPA for page tables to 0x200000

[Claudio Imbrenda]

On Wed, 26 Aug 2026 16:04:53 -0700
Sean Christopherson <seanjc@xxxxxxxxxx> wrote:

> Bump selftests completely arbitrary minimum GPA for page tables from
> 0x180000 to 0x200000 (LoongArch's minimum), so that LoongArch can use
> vm_alloc_page_table() instead of open coding a rough equivalent.
> 
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
>  tools/testing/selftests/kvm/include/kvm_util.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
> index 5a7a455b5387..70906a0d1003 100644
> --- a/tools/testing/selftests/kvm/include/kvm_util.h
> +++ b/tools/testing/selftests/kvm/include/kvm_util.h
> @@ -175,7 +175,7 @@ static inline struct userspace_mem_region *vm_get_mem_region(struct kvm_vm *vm,
>  
>  /* Minimum allocated guest virtual and physical addresses */
>  #define KVM_UTIL_MIN_VADDR		0x2000
> -#define KVM_GUEST_PAGE_TABLE_MIN_PADDR	0x180000
> +#define KVM_GUEST_PAGE_TABLE_MIN_PADDR	0x200000
>  
>  #define DEFAULT_GUEST_STACK_VADDR_MIN	0xab6000
>  #define DEFAULT_STACK_PGS		5

this breaks s390/cmma_test

I tried a quick fix, but nope... I will need to actually invest some
time (i.e. next week) to understand why the quick fix is not enough,
and come up with a proper fix

the good news is: it seems like cmma_test is the only test that is
negatively affected by this series.