linux-kernel - [PATCH] KVM: PPC: Use the arg->size directly for kvm_vm_ioctl_create_spapr

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Date:   Sun, 3 Jul 2022 13:29:32 -0400
From:   Deming Wang <wangdeming@...pur.com>
To:     <mpe@...erman.id.au>
CC:     <benh@...nel.crashing.org>, <paulus@...ba.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>,
        Deming Wang <wangdeming@...pur.com>
Subject: [PATCH] KVM: PPC: Use the arg->size directly for kvm_vm_ioctl_create_spapr_tce

Use arg->size directly may be better for code readability.Because, the
variable of size has not been found for special purpose  at present.
Also,We can reduce the use of a variable.

Signed-off-by: Deming Wang <wangdeming@...pur.com>
---
 arch/powerpc/kvm/book3s_64_vio.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/kvm/book3s_64_vio.c b/arch/powerpc/kvm/book3s_64_vio.c
index d6589c4fe889..5f74ffb88e82 100644
--- 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);
-- 
2.27.0