There's an invocation of iommu_flush_all() immediately afterwards.
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/drivers/passthrough/vtd/iommu.c
+++ b/xen/drivers/passthrough/vtd/iommu.c
@@ -1310,8 +1310,11 @@ static void __hwdom_init intel_iommu_hwd
setup_hwdom_pci_devices(d, setup_hwdom_device);
setup_hwdom_rmrr(d);
+
/* Make sure workarounds are applied before enabling the IOMMU(s). */
+ this_cpu(iommu_dont_flush_iotlb) = true;
arch_iommu_hwdom_init(d);
+ this_cpu(iommu_dont_flush_iotlb) = false;
if ( iommu_flush_all() )
printk(XENLOG_WARNING VTDPREFIX
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