[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[RFC v3 25/25] intel_iommu: process PASID-based Device-TLB invalidation
From: |
Liu, Yi L |
Subject: |
[RFC v3 25/25] intel_iommu: process PASID-based Device-TLB invalidation |
Date: |
Wed, 29 Jan 2020 04:16:56 -0800 |
From: Liu Yi L <address@hidden>
This patch adds an empty handling for PASID-based Device-TLB
invalidation. For now it is enough as it is not necessary to
propagate it to host for passthru device and also there is no
emulated device has device tlb.
Cc: Kevin Tian <address@hidden>
Cc: Jacob Pan <address@hidden>
Cc: Peter Xu <address@hidden>
Cc: Yi Sun <address@hidden>
Cc: Paolo Bonzini <address@hidden>
Cc: Richard Henderson <address@hidden>
Cc: Eduardo Habkost <address@hidden>
Signed-off-by: Liu Yi L <address@hidden>
---
hw/i386/intel_iommu.c | 18 ++++++++++++++++++
hw/i386/intel_iommu_internal.h | 1 +
2 files changed, 19 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 93de7e4..c577e96 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3290,6 +3290,17 @@ static bool vtd_process_inv_iec_desc(IntelIOMMUState *s,
return true;
}
+static bool vtd_process_device_piotlb_desc(IntelIOMMUState *s,
+ VTDInvDesc *inv_desc)
+{
+ /*
+ * no need to handle it for passthru device, for emulated
+ * devices with device tlb, it may be required, but for now,
+ * return is enough
+ */
+ return true;
+}
+
static bool vtd_process_device_iotlb_desc(IntelIOMMUState *s,
VTDInvDesc *inv_desc)
{
@@ -3411,6 +3422,13 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s)
}
break;
+ case VTD_INV_DESC_DEV_PIOTLB:
+ trace_vtd_inv_desc("device-piotlb", inv_desc.hi, inv_desc.lo);
+ if (!vtd_process_device_piotlb_desc(s, &inv_desc)) {
+ return false;
+ }
+ break;
+
case VTD_INV_DESC_DEVICE:
trace_vtd_inv_desc("device", inv_desc.hi, inv_desc.lo);
if (!vtd_process_device_iotlb_desc(s, &inv_desc)) {
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index f144bd3..f7de046 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -390,6 +390,7 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descriptor */
#define VTD_INV_DESC_PIOTLB 0x6 /* PASID-IOTLB Invalidate Desc */
#define VTD_INV_DESC_PC 0x7 /* PASID-cache Invalidate Desc */
+#define VTD_INV_DESC_DEV_PIOTLB 0x8 /* PASID-based-DIOTLB inv_desc*/
#define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descriptor */
/* Masks for Invalidation Wait Descriptor*/
--
2.7.4
- [RFC v3 14/25] intel_iommu: add virtual command capability support, (continued)
- [RFC v3 14/25] intel_iommu: add virtual command capability support, Liu, Yi L, 2020/01/29
- [RFC v3 16/25] intel_iommu: add PASID cache management infrastructure, Liu, Yi L, 2020/01/29
- [RFC v3 17/25] vfio: add bind stage-1 page table support, Liu, Yi L, 2020/01/29
- [RFC v3 18/25] intel_iommu: bind/unbind guest page table to host, Liu, Yi L, 2020/01/29
- [RFC v3 19/25] intel_iommu: replay guest pasid bindings to host, Liu, Yi L, 2020/01/29
- [RFC v3 20/25] intel_iommu: replay pasid binds after context cache invalidation, Liu, Yi L, 2020/01/29
- [RFC v3 22/25] vfio: add support for flush iommu stage-1 cache, Liu, Yi L, 2020/01/29
- [RFC v3 21/25] intel_iommu: do not pass down pasid bind for PASID #0, Liu, Yi L, 2020/01/29
- [RFC v3 23/25] intel_iommu: process PASID-based iotlb invalidation, Liu, Yi L, 2020/01/29
- [RFC v3 24/25] intel_iommu: propagate PASID-based iotlb invalidation to host, Liu, Yi L, 2020/01/29
- [RFC v3 25/25] intel_iommu: process PASID-based Device-TLB invalidation,
Liu, Yi L <=
- Re: [RFC v3 00/25] intel_iommu: expose Shared Virtual Addressing to VMs, no-reply, 2020/01/29
- Re: [RFC v3 00/25] intel_iommu: expose Shared Virtual Addressing to VMs, no-reply, 2020/01/29