Re: [Xen-devel] [RFC 2/8] x86/acpi: Warn about multiple HPET tables

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 04.11.13 at 19:54, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
> --- a/xen/arch/x86/acpi/boot.c
> +++ b/xen/arch/x86/acpi/boot.c
> @@ -289,6 +289,17 @@ static int __init acpi_parse_hpet(struct 
> acpi_table_header *table)
>               return -1;
>       }
>  
> +     /*
> +      * Some BIOSes provide multiple HPET tables. Warn that we will ignore
> +      * them.
> +      */
> +     if ( hpet_address )
> +     {
> +             printk(KERN_WARNING PREFIX
> +                    "Found multiple HPET tables. Only using first\n");
> +             return -1;
> +     }

If there really are examples of this, and if those HPETs work
properly, perhaps we should rather make use of them?

Jan


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