intel_iommu: Fix typo in comments

Fix typo:
*Unknwon  ==> Unknown
*futher  ==> further
*configed  ==> configured

Signed-off-by: Cai Huoqing <[email protected]>
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
Acked-by: Peter Xu <[email protected]>
Message-Id: <[email protected]>
Signed-off-by: Laurent Vivier <[email protected]>

Author: caihuoqing1990

hw/i386/intel_iommu.c

@@ -679,7 +679,7 @@ static inline bool vtd_pe_type_check(X86IOMMUState *x86_iommu,
         }
         break;
     default:
-        /* Unknwon type */
+        /* Unknown type */
         return false;
     }
     return true;
@@ -692,7 +692,7 @@ static inline bool vtd_pdire_present(VTDPASIDDirEntry *pdire)
 
 /**
  * Caller of this function should check present bit if wants
- * to use pdir entry for futher usage except for fpd bit check.
+ * to use pdir entry for further usage except for fpd bit check.
  */
 static int vtd_get_pdire_from_pdir_table(dma_addr_t pasid_dir_base,
                                          uint32_t pasid,
@@ -746,7 +746,7 @@ static int vtd_get_pe_in_pasid_leaf_table(IntelIOMMUState *s,
 
 /**
  * Caller of this function should check present bit if wants
- * to use pasid entry for futher usage except for fpd bit check.
+ * to use pasid entry for further usage except for fpd bit check.
  */
 static int vtd_get_pe_from_pdire(IntelIOMMUState *s,
                                  uint32_t pasid,
@@ -1507,7 +1507,7 @@ static int vtd_sync_shadow_page_table(VTDAddressSpace *vtd_as)
 }
 
 /*
- * Check if specific device is configed to bypass address
+ * Check if specific device is configured to bypass address
  * translation for DMA requests. In Scalable Mode, bypass
  * 1st-level translation or 2nd-level translation, it depends
  * on PGTT setting.