On Mon, Jan 23, 2017 at 06:36:17PM +0800, Jason Wang wrote: > > > On 2017年01月20日 21:08, Peter Xu wrote: > >Before this one we only invalidate context cache when we receive context > >entry invalidations. However it's possible that the invalidation also > >contains a domain switch (only if cache-mode is enabled for vIOMMU). In > >that case we need to notify all the registered components about the new > >mapping. > > > >Signed-off-by: Peter Xu <pet...@redhat.com> > >--- > > hw/i386/intel_iommu.c | 10 ++++++++++ > > 1 file changed, 10 insertions(+) > > > >diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c > >index f9c5142..4b08b4d 100644 > >--- a/hw/i386/intel_iommu.c > >+++ b/hw/i386/intel_iommu.c > >@@ -1146,6 +1146,16 @@ static void > >vtd_context_device_invalidate(IntelIOMMUState *s, > > trace_vtd_inv_desc_cc_device(bus_n, VTD_PCI_SLOT(devfn_it), > > VTD_PCI_FUNC(devfn_it)); > > vtd_as->context_cache_entry.context_cache_gen = 0; > >+ /* > >+ * So a device is moving out of (or moving into) a > >+ * domain, a replay() suites here to notify all the > >+ * IOMMU_NOTIFIER_MAP registers about this change. > >+ * This won't bring bad even if we have no such > >+ * notifier registered - the IOMMU notification > >+ * framework will skip MAP notifications if that > >+ * happened. > >+ */ > >+ memory_region_iommu_replay_all(&vtd_as->iommu); > > DSI and GLOBAL questions come back again or no need to care about them :) ?
DSI/GLOBAL hanldings are in patch 20 (though it'll be squashed into 18 in my next post). Is that what you mean above? Thanks! -- peterx
