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Re: [PATCH] exec: Remove the duplicated check in parse_cpu_option()


From: Greg Kurz
Subject: Re: [PATCH] exec: Remove the duplicated check in parse_cpu_option()
Date: Fri, 6 Dec 2019 17:58:40 +0100

On Fri,  6 Dec 2019 17:33:37 +1100
Gavin Shan <address@hidden> wrote:

> The @cpu_option shouldn't be NULL, otherwise assertion from g_strsplit()
> should be raised as below message indicates. So it's meaningless to validate
> @model_pices[0] in parse_cpu_option() as it shouldn't be NULL either.
> 
>    qemu-system-aarch64: GLib: g_strsplit: assertion 'string != NULL' failed
> 
> This just removes the check and unused message.
> 

Hrm... the check isn't about @cpu_option being NULL. It is about filtering out
invalid syntaxes like:

-cpu ''

or

-cpu ,some-prop

> Signed-off-by: Gavin Shan <address@hidden>
> ---
>  exec.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/exec.c b/exec.c
> index ffdb518535..3cff459e43 100644
> --- a/exec.c
> +++ b/exec.c
> @@ -963,11 +963,6 @@ const char *parse_cpu_option(const char *cpu_option)
>      const char *cpu_type;
>  
>      model_pieces = g_strsplit(cpu_option, ",", 2);
> -    if (!model_pieces[0]) {
> -        error_report("-cpu option cannot be empty");
> -        exit(1);
> -    }
> -
>      oc = cpu_class_by_name(CPU_RESOLVING_TYPE, model_pieces[0]);
>      if (oc == NULL) {
>          error_report("unable to find CPU model '%s'", model_pieces[0]);




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