KVM: PPC: Book3s: Use arg->size directly in kvm_vm_ioctl_create_spapr_tce()

The size variable is just a copy of args->size, neither size nor args
are modifed, so just use args->size directly.

Signed-off-by: Deming Wang <wangdeming@inspur.com>
[mpe: Reword change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220703172932.11329-1-wangdeming@inspur.com

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index 40864373ef876facf71e828a030001b6d70062df..95e738ef9062bfb925355906b891632d9c047b20 100644 (file)
--- a/arch/powerpc/kvm/book3s_64_vio.c
+++ b/arch/powerpc/kvm/book3s_64_vio.c
@@ -294,14 +294,14 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
        struct kvmppc_spapr_tce_table *stt = NULL;
        struct kvmppc_spapr_tce_table *siter;
        struct mm_struct *mm = kvm->mm;
-       unsigned long npages, size = args->size;
+       unsigned long npages;
        int ret;
 
        if (!args->size || args->page_shift < 12 || args->page_shift > 34 ||
                (args->offset + args->size > (ULLONG_MAX >> args->page_shift)))
                return -EINVAL;
 
-       npages = kvmppc_tce_pages(size);
+       npages = kvmppc_tce_pages(args->size);
        ret = account_locked_vm(mm, kvmppc_stt_pages(npages), true);
        if (ret)
                return ret;
@@ -314,7 +314,7 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
        stt->liobn = args->liobn;
        stt->page_shift = args->page_shift;
        stt->offset = args->offset;
-       stt->size = size;
+       stt->size = args->size;
        stt->kvm = kvm;
        mutex_init(&stt->alloc_lock);
        INIT_LIST_HEAD_RCU(&stt->iommu_tables);