[PATCH 1/2] intel_iommu: split the resevred fields arrays into two ones

[qi1 . zhang]

From: "Zhang, Qi" <address@hidden>

Signed-off-by: Zhang, Qi <address@hidden>
---
 hw/i386/intel_iommu.c | 31 +++++++++++++++++--------------
 1 file changed, 17 insertions(+), 14 deletions(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index f1de8fdb75..a118efaeaf 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -910,18 +910,19 @@ static dma_addr_t vtd_get_iova_pgtbl_base(IntelIOMMUState 
*s,
 
 /*
  * Rsvd field masks for spte:
- *     Index [1] to [4] 4k pages
- *     Index [5] to [8] large pages
+ *     vtd_spte_rsvd 4k pages
+ *     vtd_spte_rsvd_large large pages
  */
-static uint64_t vtd_paging_entry_rsvd_field[9];
+static uint64_t vtd_spte_rsvd[5];
+static uint64_t vtd_spte_rsvd_large[5];
 
 static bool vtd_slpte_nonzero_rsvd(uint64_t slpte, uint32_t level)
 {
     if (slpte & VTD_SL_PT_PAGE_SIZE_MASK) {
         /* Maybe large page */
-        return slpte & vtd_paging_entry_rsvd_field[level + 4];
+        return slpte & vtd_spte_rsvd_large[level];
     } else {
-        return slpte & vtd_paging_entry_rsvd_field[level];
+        return slpte & vtd_spte_rsvd[level];
     }
 }
 
@@ -3547,15 +3548,17 @@ static void vtd_init(IntelIOMMUState *s)
     /*
      * Rsvd field masks for spte
      */
-    vtd_paging_entry_rsvd_field[0] = ~0ULL;
-    vtd_paging_entry_rsvd_field[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[4] = VTD_SPTE_PAGE_L4_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[5] = VTD_SPTE_LPAGE_L1_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[6] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[7] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits);
-    vtd_paging_entry_rsvd_field[8] = VTD_SPTE_LPAGE_L4_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd[0] = ~0ULL;
+    vtd_spte_rsvd[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd[4] = VTD_SPTE_PAGE_L4_RSVD_MASK(s->aw_bits);
+
+    vtd_spte_rsvd_large[0] = ~0ULL;
+    vtd_spte_rsvd_large[1] = VTD_SPTE_LPAGE_L1_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd_large[2] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd_large[3] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits);
+    vtd_spte_rsvd_large[4] = VTD_SPTE_LPAGE_L4_RSVD_MASK(s->aw_bits);
 
     if (x86_iommu_ir_supported(x86_iommu)) {
         s->ecap |= VTD_ECAP_IR | VTD_ECAP_MHMV;
-- 
2.20.1