On 9/28/21 2:22 PM, David Hildenbrand wrote:
> Let's simplify return handling.
>
> Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
> ---
> arch/x86/xen/mmu_hvm.c | 11 ++---------
> 1 file changed, 2 insertions(+), 9 deletions(-)
>
> diff --git a/arch/x86/xen/mmu_hvm.c b/arch/x86/xen/mmu_hvm.c
> index b242d1f4b426..eb61622df75b 100644
> --- a/arch/x86/xen/mmu_hvm.c
> +++ b/arch/x86/xen/mmu_hvm.c
> @@ -21,23 +21,16 @@ static int xen_oldmem_pfn_is_ram(unsigned long pfn)
> .domid = DOMID_SELF,
> .pfn = pfn,
> };
> - int ram;
>
> if (HYPERVISOR_hvm_op(HVMOP_get_mem_type, &a))
> return -ENXIO;
>
> switch (a.mem_type) {
> case HVMMEM_mmio_dm:
> - ram = 0;
> - break;
> - case HVMMEM_ram_rw:
> - case HVMMEM_ram_ro:
> + return 0;
> default:
> - ram = 1;
> - break;
> + return 1;
> }
> -
> - return ram;
> }
> #endif
>
How about
return a.mem_type != HVMMEM_mmio_dm;
Result should be promoted to int and this has added benefit of not requiring changes in patch 4.
-boris
