>>> On 19.10.18 at 17:20, <roger....@citrix.com> wrote:
> No functional change intended.
> 
> Signed-off-by: Roger Pau Monné <roger....@citrix.com>

Reviewed-by: Jan Beulich <jbeul...@suse.com>
with one remark:

> --- a/xen/include/public/arch-x86/xen.h
> +++ b/xen/include/public/arch-x86/xen.h
> @@ -346,6 +346,12 @@ struct xen_arch_domainconfig {
>  #define XEN_CPUID          XEN_EMULATE_PREFIX "cpuid"
>  #endif
>  
> +/*
> + * Debug console IO port, also called "port E9 hack". Each character written
> + * to this IO port will be printed on the hypervisor console.
> + */
> +#define XEN_HVM_DEBUGCONS_IOPORT 0xe9

Perhaps amend the comment with "..., subject to log level
restrictions"? Easily done while committing.

FTR I'm a little uneasy about adding this to the public
interface, but otoh external components already use it as
if it was part of it.

Jan


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