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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>,
	"Andrew Cooper" <andrew.cooper3@citrix.com>,
	xen-devel <xen-devel@lists.xenproject.org>
Cc: Wei Liu <wei.liu2@citrix.com>,
	Stefano Stabellini <stefano.stabellini@eu.citrix.com>,
	Tim Deegan <tim@xen.org>, Paul Durrant <paul.durrant@citrix.com>,
	David Vrabel <david.vrabel@citrix.com>,
	Jan Beulich <JBeulich@suse.com>,
	Samuel Thibault <samuel.thibault@ens-lyon.org>
Subject: Re: HVMlite ABI specification DRAFT B + implementation outline
Date: Tue, 9 Feb 2016 09:36:36 -0500	[thread overview]
Message-ID: <56B9F974.6090402@oracle.com> (raw)
In-Reply-To: <56B9D455.90909@citrix.com>

On 02/09/2016 06:58 AM, Roger Pau Monné wrote:
> El 9/2/16 a les 11:56, Andrew Cooper ha escrit:
>> On 08/02/16 19:03, Roger Pau Monné wrote:
>>>
>>> Description of physical hardware devices will always come from ACPI, in the
>>> absence of any physical hardware device no ACPI tables will be provided. The
>>> presence of ACPI tables can be detected by finding the RSDP, just like on
>>> bare metal.
>> As we are extending the base structure, why not have an RSDP paddr in it
>> as well?  This avoids the need to scan RAM, and also serves as an
>> indication of "No ACPI".
> Right, this seems fine to me. I can send a patch later to expand the
> structure unless anyone else complains.
>

Isn't scanning memory the standard procedure for finding RSDP? Even if 
we provide the address, guests will still search the memory (or is it 
just Linux that does that?)

-boris

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  parent reply	other threads:[~2016-02-09 14:36 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-08 19:03 HVMlite ABI specification DRAFT B + implementation outline Roger Pau Monné
2016-02-08 21:26 ` Boris Ostrovsky
2016-02-09 10:56 ` Andrew Cooper
2016-02-09 11:58   ` Roger Pau Monné
2016-02-09 12:10     ` Jan Beulich
2016-02-09 13:00       ` Roger Pau Monné
2016-02-09 13:41         ` Jan Beulich
2016-02-09 16:32           ` Roger Pau Monné
2016-02-09 16:41             ` Jan Beulich
2016-02-09 14:36     ` Boris Ostrovsky [this message]
2016-02-09 14:42       ` Andrew Cooper
2016-02-09 14:48       ` Jan Beulich
2016-02-09 13:24 ` Jan Beulich
2016-02-09 15:06   ` Stefano Stabellini
2016-02-09 16:15     ` Jan Beulich
2016-02-09 16:17       ` David Vrabel
2016-02-09 16:28         ` Jan Beulich
2016-02-09 16:26       ` Stefano Stabellini
2016-02-09 16:33         ` Jan Beulich
2016-02-10 12:01   ` Roger Pau Monné
2016-02-10 12:53     ` Jan Beulich
2016-02-10 14:51       ` Roger Pau Monné
2016-02-10 15:14         ` Boris Ostrovsky
2016-02-09 15:14 ` Boris Ostrovsky

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