[Xen-devel] HYPERVISOR_iret()

To:	xen-devel@xxxxxxxxxxxxxxxxxxx, keir.fraser@xxxxxxxxxxxxx
Subject:	[Xen-devel] HYPERVISOR_iret()
From:	"Swapna Shingre" <amuswaps@xxxxxxxxx>
Date:	Fri, 26 Dec 2008 20:00:13 +0530
Cc:
Delivery-date:	Fri, 26 Dec 2008 06:30:38 -0800
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I am trying to add a hypercall to replace the iret instruction in xenolinux, so that everytime control comes to xen when guest OS executes 'iret'.
I found that there already exists a hypercall HYPERVISOR_iret in xen.
What is the exact functionality of HYPERVISOR_iret? In which cases is it called by the guest OS?

Please help.
-swapna

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[Xen-devel] HYPERVISOR_iret()