linux-kernel - Re: [PATCH] KVM: x86/xsave: Remove 'return void' expression for 'void function'

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Date:   Wed, 25 Oct 2023 19:24:36 +0800
From:   Like Xu <like.xu.linux@...il.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Maxim Levitsky <mlevitsk@...hat.com>
Subject: Re: [PATCH] KVM: x86/xsave: Remove 'return void' expression for 'void
 function'

Emm, did we miss this little fix ?

On 11/10/2023 12:12 am, Maxim Levitsky wrote:
> У сб, 2023-10-07 у 14:40 +0800, Like Xu пише:
>> From: Like Xu <likexu@...cent.com>
>>
>> The requested info will be stored in 'guest_xsave->region' referenced by
>> the incoming pointer "struct kvm_xsave *guest_xsave", thus there is no need
>> to explicitly use return void expression for a void function "static void
>> kvm_vcpu_ioctl_x86_get_xsave(...)". The issue is caught with [-Wpedantic].
>>
>> Fixes: 2d287ec65e79 ("x86/fpu: Allow caller to constrain xfeatures when copying to uabi buffer")
>> Signed-off-by: Like Xu <likexu@...cent.com>
>> ---
>>   arch/x86/kvm/x86.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
>> index fdb2b0e61c43..2571466a317f 100644
>> --- a/arch/x86/kvm/x86.c
>> +++ b/arch/x86/kvm/x86.c
>> @@ -5503,8 +5503,8 @@ static void kvm_vcpu_ioctl_x86_get_xsave2(struct kvm_vcpu *vcpu,
>>   static void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu,
>>   					 struct kvm_xsave *guest_xsave)
>>   {
>> -	return kvm_vcpu_ioctl_x86_get_xsave2(vcpu, (void *)guest_xsave->region,
>> -					     sizeof(guest_xsave->region));
>> +	kvm_vcpu_ioctl_x86_get_xsave2(vcpu, (void *)guest_xsave->region,
>> +				      sizeof(guest_xsave->region));
>>   }
>>   
>>   static int kvm_vcpu_ioctl_x86_set_xsave(struct kvm_vcpu *vcpu,
>>
>> base-commit: 86701e115030e020a052216baa942e8547e0b487
> Reviewed-by: Maxim Levitsky <mlevitsk@...hat.com>
> 
> Best regards,
> 	Maxim Levitsky
>