[Xen-devel] [PATCH] nestedhvm: reduce IPIs with nested-on-nested

[Christoph Egger <Christoph.Egger@xxxxxxx>]

In p2m_get_nestedp2m() there is no need to send IPIs via
nestedhvm_vmcx_flushtlb() since p2m_flush_table() already
did that.

Stop sending IPIs to flush the nested-on-nested pagetable
after write operations. Instead flush the TLB only.
This fixes an endless loop of nested page faults after
adding an entry to the nested-on-nested pagetable.

Signed-off-by: Christoph Egger <Christoph.Egger@xxxxxxx>

--
---to satisfy European Law for business letters:
Advanced Micro Devices GmbH
Einsteinring 24, 85689 Dornach b. Muenchen
Geschaeftsfuehrer: Alberto Bozzo, Andrew Bowd
Sitz: Dornach, Gemeinde Aschheim, Landkreis Muenchen
Registergericht Muenchen, HRB Nr. 43632

xen_nh_ipi.diff
Description: xen_nh_ipi.diff

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