intel_iommu: large page support
Current intel_iommu only supports 4K page which may not be sufficient
to cover guest working set. This patch tries to enable 2M and 1G mapping
for intel_iommu. This is also useful for future device IOTLB
implementation to have a better hit rate.
Major work is adding a page mask field on IOTLB entry to make it
support large page. And also use the slpte level as key to do IOTLB
lookup. MAMV was increased to 18 to support direct invalidation for 1G
mapping.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index ba288ab..e5f514c 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -113,6 +113,7 @@
/* The shift of source_id in the key of IOTLB hash table */
#define VTD_IOTLB_SID_SHIFT 36
+#define VTD_IOTLB_LVL_SHIFT 44
#define VTD_IOTLB_MAX_SIZE 1024 /* Max size of the hash table */
/* IOTLB_REG */
@@ -185,9 +186,10 @@
#define VTD_CAP_ND (((VTD_DOMAIN_ID_SHIFT - 4) / 2) & 7ULL)
#define VTD_MGAW 39 /* Maximum Guest Address Width */
#define VTD_CAP_MGAW (((VTD_MGAW - 1) & 0x3fULL) << 16)
-#define VTD_MAMV 9ULL
+#define VTD_MAMV 18ULL
#define VTD_CAP_MAMV (VTD_MAMV << 48)
#define VTD_CAP_PSI (1ULL << 39)
+#define VTD_CAP_SLLPS ((1ULL << 34) | (1ULL << 35))
/* Supported Adjusted Guest Address Widths */
#define VTD_CAP_SAGAW_SHIFT 8
@@ -320,7 +322,7 @@
/* Information about page-selective IOTLB invalidate */
struct VTDIOTLBPageInvInfo {
uint16_t domain_id;
- uint64_t gfn;
+ uint64_t addr;
uint8_t mask;
};
typedef struct VTDIOTLBPageInvInfo VTDIOTLBPageInvInfo;
