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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 <yuehaibing@huawei.com>
Reviewed-by: Alexandru Elisei <alexandru.elisei@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20211105011500.16280-1-yuehaibing@huawei.com
This commit is contained in:
YueHaibing 2021-11-05 09:15:00 +08:00 committed by Marc Zyngier
parent deacd669e1
commit 08e873cb70
3 changed files with 3 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/include/asm/kvm_host.h
View File

@ -584,7 +584,7 @@ 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);

5
arch/arm64/kvm/arm.c
View File

@ -1397,12 +1397,9 @@ 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;

7
arch/arm64/kvm/guest.c
View File

@ -869,13 +869,10 @@ 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));
/*
@ -885,8 +882,6 @@ 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)