From 01ab894f9d19a03aee876b0d1b468f7314765539 Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Wed, 9 Oct 2019 12:39:47 +0100 Subject: [PATCH 21/22] intel_iommu: Remove the caching-mode check during flag change RH-Author: Peter Xu Message-id: <20191009123947.21505-6-peterx@redhat.com> Patchwork-id: 91349 O-Subject: [RHEL-8.2.0 qemu-kvm PATCH 5/5] intel_iommu: Remove the caching-mode check during flag change Bugzilla: 1738440 RH-Acked-by: Paolo Bonzini RH-Acked-by: Auger Eric RH-Acked-by: Alex Williamson That's never a good place to stop QEMU process... Since now we have both the machine done sanity check and also the hotplug handler, we can safely remove this to avoid that. Reviewed-by: Eric Auger Signed-off-by: Peter Xu Message-Id: <20190916080718.3299-5-peterx@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit e7df189e19e86bf9f4d7aea4c6cf50ac0ebfce46) Signed-off-by: Peter Xu Signed-off-by: Danilo C. L. de Paula --- hw/i386/intel_iommu.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 44d19cc..a4190bf 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2561,10 +2561,6 @@ static void vtd_iommu_notify_flag_changed(IOMMUMemoryRegion *iommu, VTDAddressSpace *vtd_as = container_of(iommu, VTDAddressSpace, iommu); IntelIOMMUState *s = vtd_as->iommu_state; - if (!s->caching_mode && new & IOMMU_NOTIFIER_MAP) { - vtd_panic_require_caching_mode(); - } - /* Update per-address-space notifier flags */ vtd_as->notifier_flags = new; -- 1.8.3.1