Re: [PATCH v4] x86/xen: Add support for HVMOP_set_evtchn_upcall_vector

Sun, 14 Aug 2022 01:37:36 -0700 

On 29.07.22 09:04, Jane Malalane wrote:

Implement support for the HVMOP_set_evtchn_upcall_vector hypercall in
order to set the per-vCPU event channel vector callback on Linux and
use it in preference of HVM_PARAM_CALLBACK_IRQ.

If the per-VCPU vector setup is successful on BSP, use this method
for the APs. If not, fallback to the global vector-type callback.

Also register callback_irq at per-vCPU event channel setup to trick
toolstack to think the domain is enlightened.

Suggested-by: "Roger Pau Monné" <roger....@citrix.com>
Signed-off-by: Jane Malalane <jane.malal...@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com>


Pushed to xen/tip.git for-linus-6.0


Juergen

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