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72 lines
2.6 KiB
72 lines
2.6 KiB
9 months ago
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From 5a49c5bb690d55fc88b6fb12f059ae932de0a716 Mon Sep 17 00:00:00 2001
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From: Zhenzhong Duan <zhenzhong.duan@intel.com>
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Date: Tue, 21 Nov 2023 16:44:04 +0800
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Subject: [PATCH 025/101] vfio/iommufd: Relax assert check for iommufd backend
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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RH-Author: Eric Auger <eric.auger@redhat.com>
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RH-MergeRequest: 211: IOMMUFD backend backport
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RH-Jira: RHEL-19302 RHEL-21057
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RH-Acked-by: Cédric Le Goater <clg@redhat.com>
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RH-Acked-by: Sebastian Ott <sebott@redhat.com>
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RH-Commit: [24/67] 2c9e41e9ca0b67ebf807d1643a98866a0cb75768 (eauger1/centos-qemu-kvm)
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Currently iommufd doesn't support dirty page sync yet,
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but it will not block us doing live migration if VFIO
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migration is force enabled.
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So in this case we allow set_dirty_page_tracking to be NULL.
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Note we don't need same change for query_dirty_bitmap because
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when dirty page sync isn't supported, query_dirty_bitmap will
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never be called.
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Suggested-by: Cédric Le Goater <clg@redhat.com>
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Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
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Reviewed-by: Cédric Le Goater <clg@redhat.com>
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Reviewed-by: Eric Auger <eric.auger@redhat.com>
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Tested-by: Eric Auger <eric.auger@redhat.com>
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Tested-by: Nicolin Chen <nicolinc@nvidia.com>
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Signed-off-by: Cédric Le Goater <clg@redhat.com>
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(cherry picked from commit 36e84d0c17102fa1c887d8c650a13ec08fca0ec0)
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Signed-off-by: Eric Auger <eric.auger@redhat.com>
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---
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hw/vfio/container-base.c | 4 ++++
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hw/vfio/container.c | 4 ----
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2 files changed, 4 insertions(+), 4 deletions(-)
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diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c
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index 71f7274973..eee2dcfe76 100644
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--- a/hw/vfio/container-base.c
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+++ b/hw/vfio/container-base.c
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@@ -55,6 +55,10 @@ void vfio_container_del_section_window(VFIOContainerBase *bcontainer,
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int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
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bool start)
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{
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+ if (!bcontainer->dirty_pages_supported) {
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+ return 0;
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+ }
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+
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g_assert(bcontainer->ops->set_dirty_page_tracking);
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return bcontainer->ops->set_dirty_page_tracking(bcontainer, start);
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}
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diff --git a/hw/vfio/container.c b/hw/vfio/container.c
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index 6bacf38222..ed2d721b2b 100644
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--- a/hw/vfio/container.c
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+++ b/hw/vfio/container.c
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@@ -216,10 +216,6 @@ static int vfio_legacy_set_dirty_page_tracking(VFIOContainerBase *bcontainer,
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.argsz = sizeof(dirty),
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};
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- if (!bcontainer->dirty_pages_supported) {
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- return 0;
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- }
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-
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if (start) {
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dirty.flags = VFIO_IOMMU_DIRTY_PAGES_FLAG_START;
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} else {
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--
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2.39.3
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