linux-kernel - Re: [PATCH] x86/kvm: Make parse_no_xxx _

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Date:   Fri, 23 Feb 2018 23:46:34 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Dou Liyang <douly.fnst@...fujitsu.com>,
        linux-kernel@...r.kernel.org
Cc:     rkrcmar@...hat.com, kvm@...r.kernel.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, Juergen Gross <jgross@...e.com>,
        x86@...nel.org
Subject: Re: [PATCH] x86/kvm: Make parse_no_xxx __init for kvm

On 17/01/2018 04:46, Dou Liyang wrote:
> The early_param() is only called during kernel initialization, So Linux
> marks the functions of it with __init macro to save memory.
> 
> But it forgot to mark the parse_no_kvmapf/stealacc/kvmclock_vsyscall,
> So, Make them __init as well.
> 
> Cc: Paolo Bonzini <pbonzini@...hat.com>
> Cc: rkrcmar@...hat.com
> Cc: kvm@...r.kernel.org
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: Juergen Gross <jgross@...e.com>
> Cc: x86@...nel.org
> Signed-off-by: Dou Liyang <douly.fnst@...fujitsu.com>
> ---
>  arch/x86/kernel/kvm.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
> index b40ffbf156c1..06801b0069db 100644
> --- a/arch/x86/kernel/kvm.c
> +++ b/arch/x86/kernel/kvm.c
> @@ -49,7 +49,7 @@
>  
>  static int kvmapf = 1;
>  
> -static int parse_no_kvmapf(char *arg)
> +static int __init parse_no_kvmapf(char *arg)
>  {
>          kvmapf = 0;
>          return 0;
> @@ -58,7 +58,7 @@ static int parse_no_kvmapf(char *arg)
>  early_param("no-kvmapf", parse_no_kvmapf);
>  
>  static int steal_acc = 1;
> -static int parse_no_stealacc(char *arg)
> +static int __init parse_no_stealacc(char *arg)
>  {
>          steal_acc = 0;
>          return 0;
> @@ -67,7 +67,7 @@ static int parse_no_stealacc(char *arg)
>  early_param("no-steal-acc", parse_no_stealacc);
>  
>  static int kvmclock_vsyscall = 1;
> -static int parse_no_kvmclock_vsyscall(char *arg)
> +static int __init parse_no_kvmclock_vsyscall(char *arg)
>  {
>          kvmclock_vsyscall = 0;
>          return 0;
> 

Queued, thanks.

Paolo