Re: [PATCH] xen/pvhvm: add soft reset on kexec/kdump support

From: Boris Ostrovsky
Date: Fri Sep 25 2015 - 15:21:47 EST

On 09/25/2015 03:01 PM, Konrad Rzeszutek Wilk wrote:
On Fri, Sep 25, 2015 at 01:17:40PM -0400, Boris Ostrovsky wrote:
On 09/25/2015 12:07 PM, Vitaly Kuznetsov wrote:
Also, I am not sure I see how this new op will be used in the
hypervisor --- currently AFAICS it is only processed under
is_hardware_domain(). Are there other patches that will support HVM
Please see my Xen series:
(last 'full' submission).

All patches from my 'toolstack-assisted approach to PVHVM guest kexec'
are already merged to xen.git (first 10 are already in 'master' and the
last one is in 'staging').

OK, so I was looking at the right tree. Then I don't understand how
SHUTDOWN_soft_reset would be reached for a non-privileged domain. The only
path that I see is

if ( is_hardware_domain(d) )

Is there another path to handle this op?
e1bd9812966de9a16f30a58e7162b80bd6af361b libxc: support XEN_DOMCTL_soft_reset operation
c57e6ebd8c3e490e353e68d96abec1dad01e72f5 (lib)xl: soft reset support

That's toolstack issuing hypercalls from dom0.

I am asking about (non-privileged) guest itself calling SCHEDOP_shutdown.

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