linux-kernel - Re: [PATCH 4/9] KVM: selftests: Introduce a VM_MODE

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Date:   Thu, 23 May 2019 19:20:04 +0200
From:   Andrew Jones <drjones@...hat.com>
To:     Thomas Huth <thuth@...hat.com>
Cc:     Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Radim Krčmář <rkrcmar@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
        linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        linux-s390@...r.kernel.org
Subject: Re: [PATCH 4/9] KVM: selftests: Introduce a VM_MODE_DEFAULT macro
 for the default bits

On Thu, May 23, 2019 at 06:43:04PM +0200, Thomas Huth wrote:
> This will be required later for tests like the kvm_create_max_vcpus
> test that do not use the vm_create_default() function.
> 
> Signed-off-by: Thomas Huth <thuth@...hat.com>
> ---
>  tools/testing/selftests/kvm/include/kvm_util.h      | 6 ++++++
>  tools/testing/selftests/kvm/lib/aarch64/processor.c | 2 +-
>  tools/testing/selftests/kvm/lib/x86_64/processor.c  | 2 +-
>  3 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing/selftests/kvm/include/kvm_util.h
> index b8bf961074fe..b6eb6471e6b2 100644
> --- a/tools/testing/selftests/kvm/include/kvm_util.h
> +++ b/tools/testing/selftests/kvm/include/kvm_util.h
> @@ -43,6 +43,12 @@ enum vm_guest_mode {
>  	NUM_VM_MODES,
>  };
>  
> +#ifdef __aarch64__
> +#define VM_MODE_DEFAULT VM_MODE_P40V48_4K
> +#else
> +#define VM_MODE_DEFAULT VM_MODE_P52V48_4K
> +#endif
> +
>  #define vm_guest_mode_string(m) vm_guest_mode_string[m]
>  extern const char * const vm_guest_mode_string[];
>  
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c
> index fa6cd340137c..596ccaf09cb6 100644
> --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c
> +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c
> @@ -226,7 +226,7 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
>  	uint64_t extra_pg_pages = (extra_mem_pages / ptrs_per_4k_pte) * 2;
>  	struct kvm_vm *vm;
>  
> -	vm = vm_create(VM_MODE_P40V48_4K, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
> +	vm = vm_create(VM_MODE_DEFAULT, DEFAULT_GUEST_PHY_PAGES + extra_pg_pages, O_RDWR);
>  
>  	kvm_vm_elf_load(vm, program_invocation_name, 0, 0);
>  	vm_vcpu_add_default(vm, vcpuid, guest_code);
> diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
> index dc7fae9fa424..bb38bbcefac5 100644
> --- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
> +++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
> @@ -823,7 +823,7 @@ struct kvm_vm *vm_create_default(uint32_t vcpuid, uint64_t extra_mem_pages,
>  	uint64_t extra_pg_pages = extra_mem_pages / 512 * 2;
>  
>  	/* Create VM */
> -	vm = vm_create(VM_MODE_P52V48_4K,
> +	vm = vm_create(VM_MODE_DEFAULT,
>  		       DEFAULT_GUEST_PHY_PAGES + extra_pg_pages,
>  		       O_RDWR);
>  
> -- 
> 2.21.0
>

Reviewed-by: Andrew Jones <drjones@...hat.com>