linux-kernel - Re: [PATCH RESEND for-5.9] MIPS: KVM: Convert a fallthrough comment to fallthrough

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Date:   Mon, 10 Aug 2020 10:11:47 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Jiaxun Yang <jiaxun.yang@...goat.com>, kvm@...r.kernel.org
Cc:     Huacai Chen <chenhc@...ote.com>,
        Aleksandar Markovic <aleksandar.qemu.devel@...il.com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND for-5.9] MIPS: KVM: Convert a fallthrough comment
 to fallthrough

On 10/08/20 03:17, Jiaxun Yang wrote:
> There is a fallthrough comment being forgotten,
> GCC complains about it:
> 
> arch/mips/kvm/emulate.c: In function kvm_mips_emulate_load:
> arch/mips/kvm/emulate.c:1936:21: error: this statement may fall through
>  1936 |   vcpu->mmio_needed = 1; /* unsigned */
>       |   ~~~~~~~~~~~~~~~~~~^~~
> arch/mips/kvm/emulate.c:1939:2: note: here
>  1939 |  case lw_op:
> 
> Just fix it.
> 
> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> Reviewed-by: Huacai Chen <chenhc@...ote.com>
> ---
> This is blocking KVM MIPS from build, so it needs to get into 5.9.
> ---
>  arch/mips/kvm/emulate.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/mips/kvm/emulate.c b/arch/mips/kvm/emulate.c
> index 703782355318..d70c4f8e14e2 100644
> --- a/arch/mips/kvm/emulate.c
> +++ b/arch/mips/kvm/emulate.c
> @@ -1935,7 +1935,7 @@ enum emulation_result kvm_mips_emulate_load(union mips_instruction inst,
>  
>  	case lwu_op:
>  		vcpu->mmio_needed = 1;	/* unsigned */
> -		/* fall through */
> +		fallthrough;
>  #endif
>  	case lw_op:
>  		run->mmio.len = 4;
> 

Queued, thanks.

Paolo