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Re: [PATCH v6 03/44] x86/boot: move cmdline to boot info


  • To: "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Thu, 17 Oct 2024 21:35:48 +0100
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  • Cc: jason.andryuk@xxxxxxx, christopher.w.clark@xxxxxxxxx, stefano.stabellini@xxxxxxx, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Thu, 17 Oct 2024 20:36:08 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 17/10/2024 6:02 pm, Daniel P. Smith wrote:
> diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
> index eac0954f42b8..037cdd17386c 100644
> --- a/xen/arch/x86/setup.c
> +++ b/xen/arch/x86/setup.c
> @@ -1035,11 +1043,7 @@ void asmlinkage __init noreturn __start_xen(unsigned 
> long mbi_p)
>  
>      bi = multiboot_fill_boot_info(mbi_p);
>  
> -    /* Parse the command-line options. */
> -    if ( mbi->flags & MBI_CMDLINE )
> -        cmdline = cmdline_cook(__va(mbi->cmdline), bi->loader);
> -
> -    if ( (kextra = strstr(cmdline, " -- ")) != NULL )
> +    if ( (kextra = strstr(bi->cmdline, " -- ")) != NULL )

The /* Parse the command-line options. */ comment refers mostly to ...

>      {
>          /*
>           * Options after ' -- ' separator belong to dom0.
> @@ -1050,7 +1054,7 @@ void asmlinkage __init noreturn __start_xen(unsigned 
> long mbi_p)
>          kextra += 3;
>          while ( kextra[1] == ' ' ) kextra++;
>      }
> -    cmdline_parse(cmdline);
> +    cmdline_parse(bi->cmdline);

..., so should stay in place rather than moving into
multiboot_fill_boot_info().

~Andrew



 


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