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