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Re: [Xen-devel] ia64 question ...


  • To: Gerd Hoffmann <kraxel@xxxxxxx>, Xen devel list <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
  • Date: Wed, 08 Nov 2006 17:20:18 +0000
  • Delivery-date: Wed, 08 Nov 2006 09:20:39 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AccDWiloaA1+Sm9NEdu1yAAX8io7RQ==
  • Thread-topic: [Xen-devel] ia64 question ...



On 8/11/06 17:05, "Gerd Hoffmann" <kraxel@xxxxxxx> wrote:

> offsetof(struct vcpu_guest_context,user_regs)) gives me 16.  I've
> expected 8.  Does ia64 align structs on 16 byte borders?  Or is there
> some other reason?

The cpu_user_regs contains fields that require 16-byte alignment (the
pt_fpreg structs) and this forces 16-byte alignment for the structure as a
whole.

 -- Keir




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