From ff2a278c781c862cf16c7cc9635e780422325a5c Mon Sep 17 00:00:00 2001 From: YueHaibing Date: Fri, 5 Nov 2021 09:15:00 +0800 Subject: [PATCH] UPSTREAM: KVM: arm64: Change the return type of kvm_vcpu_preferred_target() kvm_vcpu_preferred_target() always return 0 because kvm_target_cpu() never returns a negative error code. Signed-off-by: YueHaibing Reviewed-by: Alexandru Elisei Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211105011500.16280-1-yuehaibing@huawei.com (cherry picked from commit 08e873cb70f30e11e912a93390f1c0c4e65fae1c) Bug: 204960018 Signed-off-by: Will Deacon Change-Id: I39e83529eff560f692853be9e9aba8d6200a824c --- arch/arm64/include/asm/kvm_host.h | 2 +- arch/arm64/kvm/arm.c | 5 +---- arch/arm64/kvm/guest.c | 7 +------ 3 files changed, 3 insertions(+), 11 deletions(-) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 73cb8102909f..49abcb019cc6 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -597,7 +597,7 @@ struct kvm_vcpu_stat { u64 exits; }; -int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); +void kvm_vcpu_preferred_target(struct kvm_vcpu_init *init); unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu); int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg); diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c index 9ebf35a70a6c..547251459da3 100644 --- a/arch/arm64/kvm/arm.c +++ b/arch/arm64/kvm/arm.c @@ -1379,12 +1379,9 @@ long kvm_arch_vm_ioctl(struct file *filp, return kvm_vm_ioctl_set_device_addr(kvm, &dev_addr); } case KVM_ARM_PREFERRED_TARGET: { - int err; struct kvm_vcpu_init init; - err = kvm_vcpu_preferred_target(&init); - if (err) - return err; + kvm_vcpu_preferred_target(&init); if (copy_to_user(argp, &init, sizeof(init))) return -EFAULT; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index ffbe664ff838..b929bbfc4aac 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -853,13 +853,10 @@ u32 __attribute_const__ kvm_target_cpu(void) return KVM_ARM_TARGET_GENERIC_V8; } -int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init) +void kvm_vcpu_preferred_target(struct kvm_vcpu_init *init) { u32 target = kvm_target_cpu(); - if (target < 0) - return -ENODEV; - memset(init, 0, sizeof(*init)); /* @@ -869,8 +866,6 @@ int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init) * target type. */ init->target = (__u32)target; - - return 0; } int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)