Re: [PATCH 22/34] KVM: selftests: Drop unused kvm_userspace_memory_region_find() helper

[Fuad Tabba <tabba@xxxxxxxxxx>]

On Sun, Nov 5, 2023 at 4:33 PM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> From: Sean Christopherson <seanjc@xxxxxxxxxx>
>
> Drop kvm_userspace_memory_region_find(), it's unused and a terrible API
> (probably why it's unused).  If anything outside of kvm_util.c needs to
> get at the memslot, userspace_mem_region_find() can be exposed to give
> others full access to all memory region/slot information.
>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> Message-Id: <20231027182217.3615211-25-seanjc@xxxxxxxxxx>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> ---

Reviewed-by: Fuad Tabba <tabba@xxxxxxxxxx>
Tested-by: Fuad Tabba <tabba@xxxxxxxxxx>

Cheers,
/fuad

>  .../selftests/kvm/include/kvm_util_base.h     |  4 ---
>  tools/testing/selftests/kvm/lib/kvm_util.c    | 29 -------------------
>  2 files changed, 33 deletions(-)
>
> diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h b/tools/testing/selftests/kvm/include/kvm_util_base.h
> index a18db6a7b3cf..967eaaeacd75 100644
> --- a/tools/testing/selftests/kvm/include/kvm_util_base.h
> +++ b/tools/testing/selftests/kvm/include/kvm_util_base.h
> @@ -776,10 +776,6 @@ vm_adjust_num_guest_pages(enum vm_guest_mode mode, unsigned int num_guest_pages)
>         return n;
>  }
>
> -struct kvm_userspace_memory_region *
> -kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start,
> -                                uint64_t end);
> -
>  #define sync_global_to_guest(vm, g) ({                         \
>         typeof(g) *_p = addr_gva2hva(vm, (vm_vaddr_t)&(g));     \
>         memcpy(_p, &(g), sizeof(g));                            \
> diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
> index 7a8af1821f5d..f09295d56c23 100644
> --- a/tools/testing/selftests/kvm/lib/kvm_util.c
> +++ b/tools/testing/selftests/kvm/lib/kvm_util.c
> @@ -590,35 +590,6 @@ userspace_mem_region_find(struct kvm_vm *vm, uint64_t start, uint64_t end)
>         return NULL;
>  }
>
> -/*
> - * KVM Userspace Memory Region Find
> - *
> - * Input Args:
> - *   vm - Virtual Machine
> - *   start - Starting VM physical address
> - *   end - Ending VM physical address, inclusive.
> - *
> - * Output Args: None
> - *
> - * Return:
> - *   Pointer to overlapping region, NULL if no such region.
> - *
> - * Public interface to userspace_mem_region_find. Allows tests to look up
> - * the memslot datastructure for a given range of guest physical memory.
> - */
> -struct kvm_userspace_memory_region *
> -kvm_userspace_memory_region_find(struct kvm_vm *vm, uint64_t start,
> -                                uint64_t end)
> -{
> -       struct userspace_mem_region *region;
> -
> -       region = userspace_mem_region_find(vm, start, end);
> -       if (!region)
> -               return NULL;
> -
> -       return &region->region;
> -}
> -
>  __weak void vcpu_arch_free(struct kvm_vcpu *vcpu)
>  {
>
> --
> 2.39.1
>
>