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

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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
This commit is contained in:
Deming Wang 2022-07-03 13:29:32 -04:00 committed by Michael Ellerman
parent 392a58f1ea
commit 6fa1efeaa6
1 changed files with 3 additions and 3 deletions
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6
arch/powerpc/kvm/book3s_64_vio.c
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@ -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 *stt = NULL;
struct kvmppc_spapr_tce_table *siter; struct kvmppc_spapr_tce_table *siter;
struct mm_struct *mm = kvm->mm; struct mm_struct *mm = kvm->mm;
unsigned long npages, size = args->size; unsigned long npages;
int ret; int ret;
if (!args->size || args->page_shift < 12 || args->page_shift > 34 || if (!args->size || args->page_shift < 12 || args->page_shift > 34 ||
(args->offset + args->size > (ULLONG_MAX >> args->page_shift))) (args->offset + args->size > (ULLONG_MAX >> args->page_shift)))
return -EINVAL; return -EINVAL;
npages = kvmppc_tce_pages(size); npages = kvmppc_tce_pages(args->size);
ret = account_locked_vm(mm, kvmppc_stt_pages(npages), true); ret = account_locked_vm(mm, kvmppc_stt_pages(npages), true);
if (ret) if (ret)
return ret; return ret;
@ -314,7 +314,7 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
stt->liobn = args->liobn; stt->liobn = args->liobn;
stt->page_shift = args->page_shift; stt->page_shift = args->page_shift;
stt->offset = args->offset; stt->offset = args->offset;
stt->size = size; stt->size = args->size;
stt->kvm = kvm; stt->kvm = kvm;
mutex_init(&stt->alloc_lock); mutex_init(&stt->alloc_lock);
INIT_LIST_HEAD_RCU(&stt->iommu_tables); INIT_LIST_HEAD_RCU(&stt->iommu_tables);