linux-kernel - [PATCH] KVM: arm64: cancel the return value check of kvm_arm_init

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Date:   Fri, 20 May 2022 08:49:11 +0000
From:   Peng Wu <wupeng58@...wei.com>
To:     <maz@...nel.org>, <james.morse@....com>,
        <alexandru.elisei@....com>, <catalin.marinas@....com>,
        <will@...nel.org>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <kvmarm@...ts.cs.columbia.edu>, <linux-kernel@...r.kernel.org>,
        <liwei391@...wei.com>, <yuehaibing@...wei.com>,
        <wupeng58@...wei.com>
Subject: [PATCH] KVM: arm64: cancel the return value check of kvm_arm_init_sve()

Currently, kvm_arm_init_sve() has only a unique return value,
so change the return value type of kvm_arm_init_sve() to void.

Meanwhile, there's no need to check the return value of
kvm_arm_init_sve() in kvm_arch_init().

Signed-off-by: Peng Wu <wupeng58@...wei.com>
---
 arch/arm64/kvm/arm.c   | 4 +---
 arch/arm64/kvm/reset.c | 4 +---
 2 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 400bb0fe2745..5ec90991c68e 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2206,9 +2206,7 @@ int kvm_arch_init(void *opaque)
 	if (err)
 		return err;
 
-	err = kvm_arm_init_sve();
-	if (err)
-		return err;
+	kvm_arm_init_sve();
 
 	err = kvm_arm_vmid_alloc_init();
 	if (err) {
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c
index 6c70c6f61c70..abae7b24eb8b 100644
--- a/arch/arm64/kvm/reset.c
+++ b/arch/arm64/kvm/reset.c
@@ -43,7 +43,7 @@ static u32 kvm_ipa_limit;
 
 unsigned int kvm_sve_max_vl;
 
-int kvm_arm_init_sve(void)
+void kvm_arm_init_sve(void)
 {
 	if (system_supports_sve()) {
 		kvm_sve_max_vl = sve_max_virtualisable_vl();
@@ -65,8 +65,6 @@ int kvm_arm_init_sve(void)
 			pr_warn("KVM: SVE vector length for guests limited to %u bytes\n",
 				kvm_sve_max_vl);
 	}
-
-	return 0;
 }
 
 static int kvm_vcpu_enable_sve(struct kvm_vcpu *vcpu)
-- 
2.17.1