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Re: [Xen-devel] [PATCH] docs: document "ucode=" hypervisor command line option


  • To: Jan Beulich <JBeulich@xxxxxxxx>
  • From: Pasi Kärkkäinen <pasik@xxxxxx>
  • Date: Mon, 10 Sep 2012 13:26:57 +0300
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxx>
  • Delivery-date: Mon, 10 Sep 2012 10:27:13 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xen.org>

On Mon, Sep 10, 2012 at 10:39:47AM +0100, Jan Beulich wrote:
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> --- a/docs/misc/xen-command-line.markdown
> +++ b/docs/misc/xen-command-line.markdown
> @@ -785,6 +785,19 @@ Specify the per-cpu trace buffer size in
>  > `= unstable | skewed`
>  
>  ### ucode
> +> `= <integer>`
> +
> +Specify the CPU microcode update blob module index. When positive, this
> +specifies the n-th module (in the GrUB entry, zero based) to be used
> +for updating CPU micrcode. When negative, counting starts at the end of
                        ^
typo here, should be "microcode", obviously.

-- Pasi

> +the modules in the GrUB entry (so with the blob commonly being last,
> +one could specify `ucode=-1`). Note that the value of zero is not valid
> +here (entry zero, i.e. the first module, is always the Dom0 kernel
> +image). Note further that use of this option has an unspecified effect
> +when used with xen.efi (there the concept of modules doesn't exist, and
> +the blob gets specified via the `ucode=<filename>` config file/section
> +entry; see [EFI configuration file description](efi.html)).
> +
>  ### unrestricted\_guest
>  > `= <boolean>`
>  
> 
> 
> 

> docs: document "ucode=" hypervisor command line option
> 
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> --- a/docs/misc/xen-command-line.markdown
> +++ b/docs/misc/xen-command-line.markdown
> @@ -785,6 +785,19 @@ Specify the per-cpu trace buffer size in
>  > `= unstable | skewed`
>  
>  ### ucode
> +> `= <integer>`
> +
> +Specify the CPU microcode update blob module index. When positive, this
> +specifies the n-th module (in the GrUB entry, zero based) to be used
> +for updating CPU micrcode. When negative, counting starts at the end of
> +the modules in the GrUB entry (so with the blob commonly being last,
> +one could specify `ucode=-1`). Note that the value of zero is not valid
> +here (entry zero, i.e. the first module, is always the Dom0 kernel
> +image). Note further that use of this option has an unspecified effect
> +when used with xen.efi (there the concept of modules doesn't exist, and
> +the blob gets specified via the `ucode=<filename>` config file/section
> +entry; see [EFI configuration file description](efi.html)).
> +
>  ### unrestricted\_guest
>  > `= <boolean>`
>  

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> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel


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