Re: [Xen-devel] [PATCH v2 26/41] arm : acpi add xen environment table

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 28.05.15 at 14:12, <stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Thu, 28 May 2015, Jan Beulich wrote:
>> >>> On 28.05.15 at 12:58, <stefano.stabellini@xxxxxxxxxxxxx> wrote:
>> > Let's take a closer look at this table. After the boilierplate, these
>> > are the interesting fields:
>> > 
>> > GNT Start, GNT Size
>> > Evtchn Intr, Evtchn Intr Flags
>> > 
>> > After the table, it is clearly stated:
>> > 
>> > "The Grant Table region is optional."
>> > 
>> > and
>> > 
>> > "The Event Channel Interrupt is optional."
>> > 
>> > So I think there is no problem: we don't want to pass any info in that
>> > table? Sure, let's not pass any. We can still use it to flag the
>> > presence of Xen on the platform.
>> 
>> Even more so a reason to use what base ACPI has, without any
>> custom table.
> 
> Could you please make a concrete suggestion with table names and fields?

I already pointed you at 6.0's new FADT field "Hypervisor Vendor
Identity".

Jan


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