From: Keir Fraser <keir.fraser@eu.citrix.com>
To: Weidong Han <weidong.han@intel.com>
Cc: Tim Deegan <Tim.Deegan@eu.citrix.com>,
Jeremy Fitzhardinge <jeremy@goop.org>,
Xen-devel <xen-devel@lists.xensource.com>
Subject: Re: [PATCH 0/4] XSAVE/XRSTOR fixes and enhancements
Date: Tue, 31 Aug 2010 08:41:30 +0100 [thread overview]
Message-ID: <C8A270BA.2162C%keir.fraser@eu.citrix.com> (raw)
In-Reply-To: <4C7CB0AE.6050908@intel.com>
On 31/08/2010 08:35, "Weidong Han" <weidong.han@intel.com> wrote:
>> Breaks backward compatibility by changing size of vcpu_guest_context (part
>> of the PV guest ABI). Totally unacceptable -- is this a nasty attempt to get
>>
> yes, it cannot restore guest saved by old Xen. do you mean we should not
> change size of vcpu_guest_context in future?
Yes, and it's not just a save/restore issue. The PV guest itself handles
vcpu_guest_context when booting secondary vcpus (via VCPUOP_initialise). The
structure layout/size is set in stone.
-- Keir
prev parent reply other threads:[~2010-08-31 7:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-31 2:59 [PATCH 0/4] XSAVE/XRSTOR fixes and enhancements Han, Weidong
2010-08-31 6:52 ` Keir Fraser
2010-08-31 7:35 ` Weidong Han
2010-08-31 7:41 ` Keir Fraser [this message]
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