Re: [Xen-devel] [PATCH for 4.6] x86/hvm.c: fix regression in guest destruction

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Thu, 2015-07-30 at 10:21 +0100, Ian Campbell wrote:

> which I have applied with. I still don't think the commit message is very
> satisfactory, but I'm not maintainer of any of this code so meh.

For the benefit of the archives perhaps someone could explain why gating a
per-vcpu teardown on a host level feature setting is correct?

In particular what ensures that altp2m_vcpu_initialise has been called,
given that this is only called from HVMOP_altp2m_set_domain_state. What
happens if that HVMOP is never touched?

Do things work both for altp2m disabled on the Xen command line and
disabled/enabled in the guest config? If so how?

Also how come HVMOP_altp2m_set_domain_state does not have a
hvm_altp2m_supported check?

Ian.

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