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[Xen-devel] xc_domain_hvm_getcontext_partial(... CPU ...), the RIP register, and mem_event

To: "xen-devel@xxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxx>
From: Razvan Cojocaru <rzvncj@xxxxxxxxx>
Date: Mon, 25 Feb 2013 18:08:11 +0200
Delivery-date: Mon, 25 Feb 2013 16:08:01 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

Hello,

assuming that the VCPU is paused while waiting for userspace to respondto a page fault mem_event, and userspace calls libxc'sxc_domain_hvm_getcontext_partial(... CPU ...) and tries to inspect RIP,is this a safe thing to do? Is RIP's value guaranteed to be safe toinspect in this context?


Thanks,
Razvan Cojocaru

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