From 8cdcf3c1e58d04b6811956d7608efeb66c42d719 Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Fri, 6 Jan 2017 12:06:13 +0800 Subject: [PATCH] intel_iommu: allow migration IOMMU needs to be migrated before all the PCI devices (in case there are devices that will request for address translation). So marking it with a priority higher than the default (which PCI devices and other belong). Migration framework handled the rest. Signed-off-by: Peter Xu Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/intel_iommu.c | 22 +++++++++++++++++++++- include/migration/vmstate.h | 1 + 2 files changed, 22 insertions(+), 1 deletion(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 5f3e35123d..119217b612 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1996,7 +1996,27 @@ static void vtd_iommu_notify_flag_changed(MemoryRegion *iommu, static const VMStateDescription vtd_vmstate = { .name = "iommu-intel", - .unmigratable = 1, + .version_id = 1, + .minimum_version_id = 1, + .priority = MIG_PRI_IOMMU, + .fields = (VMStateField[]) { + VMSTATE_UINT64(root, IntelIOMMUState), + VMSTATE_UINT64(intr_root, IntelIOMMUState), + VMSTATE_UINT64(iq, IntelIOMMUState), + VMSTATE_UINT32(intr_size, IntelIOMMUState), + VMSTATE_UINT16(iq_head, IntelIOMMUState), + VMSTATE_UINT16(iq_tail, IntelIOMMUState), + VMSTATE_UINT16(iq_size, IntelIOMMUState), + VMSTATE_UINT16(next_frcd_reg, IntelIOMMUState), + VMSTATE_UINT8_ARRAY(csr, IntelIOMMUState, DMAR_REG_SIZE), + VMSTATE_UINT8(iq_last_desc_type, IntelIOMMUState), + VMSTATE_BOOL(root_extended, IntelIOMMUState), + VMSTATE_BOOL(dmar_enabled, IntelIOMMUState), + VMSTATE_BOOL(qi_enabled, IntelIOMMUState), + VMSTATE_BOOL(intr_enabled, IntelIOMMUState), + VMSTATE_BOOL(intr_eime, IntelIOMMUState), + VMSTATE_END_OF_LIST() + } }; static const MemoryRegionOps vtd_mem_ops = { diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h index 1a228872fa..2125829a16 100644 --- a/include/migration/vmstate.h +++ b/include/migration/vmstate.h @@ -188,6 +188,7 @@ enum VMStateFlags { typedef enum { MIG_PRI_DEFAULT = 0, + MIG_PRI_IOMMU, /* Must happen before PCI devices */ MIG_PRI_MAX, } MigrationPriority;