Changeset 104911 in vbox for trunk/src/VBox/VMM/include

Timestamp:

Jun 13, 2024 10:33:27 AM (9 months ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

163513

Message:

VMM/GIM: bugref:10703 Fix/re-implemented Hyper-V paravirt HvExtCallGetBootZeroedMemory hypercall to suit the latest (and actually used) Windows Hyper-V spec.

File:

• trunk/src/VBox/VMM/include/GIMHvInternal.h (modified) (2 diffs)

trunk/src/VBox/VMM/include/GIMHvInternal.h

@@ -562 +562 @@
                                                    | MSR_GIM_HV_STIMER_SINTX)
 /** @} */
+
+
+/** Hyper-V page size.  */
+#define GIM_HV_PAGE_SIZE                          4096
+/** Hyper-V page shift. */
+#define GIM_HV_PAGE_SHIFT                         12
+
+/** Microsoft Hyper-V vendor signature. */
+#define GIM_HV_VENDOR_MICROSOFT                   "Microsoft Hv"
 
 /**
@@ -1081 +1090 @@
 
 /**
- * HvExtCallGetBootZeroedMemory hypercall output.
- */
-typedef struct GIMHVEXTGETBOOTZEROMEM
+ * Hyper-V memory range for HvExtCallGetBootZeroedMemory.
+ */
+typedef struct GIMHVEXTMEMRANGE
 {
     RTGCPHYS GCPhysStart;
     uint64_t cPages;
+} GIMHVEXTMEMRANGE;
+
+/** Maximum number of zeroed memory ranges supported by Hyper-V. */
+#define GIM_HV_MAX_BOOT_ZEROED_MEM_RANGES         255
+
+/**
+ * HvExtCallGetBootZeroedMemory hypercall output.
+ */
+typedef struct GIMHVEXTGETBOOTZEROMEM
+{
+    uint64_t            cRanges;
+    GIMHVEXTMEMRANGE    aRanges[GIM_HV_MAX_BOOT_ZEROED_MEM_RANGES];
 } GIMHVEXTGETBOOTZEROMEM;
 /** Pointer to a HvExtCallGetBootZeroedMemory output struct. */
 typedef GIMHVEXTGETBOOTZEROMEM *PGIMHVEXTGETBOOTZEROMEM;
-AssertCompileSize(GIMHVEXTGETBOOTZEROMEM, 16);
-/** @} */
-
-
-/** Hyper-V page size.  */
-#define GIM_HV_PAGE_SIZE                          4096
-/** Hyper-V page shift. */
-#define GIM_HV_PAGE_SHIFT                         12
-
-/** Microsoft Hyper-V vendor signature. */
-#define GIM_HV_VENDOR_MICROSOFT                   "Microsoft Hv"
+/** Pointer to a const HvExtCallGetBootZeroedMemory output struct. */
+typedef GIMHVEXTGETBOOTZEROMEM const *PCGIMHVEXTGETBOOTZEROMEM;
+AssertCompileSize(GIMHVEXTGETBOOTZEROMEM, 4088);
+AssertCompile(sizeof(GIMHVEXTGETBOOTZEROMEM) <= GIM_HV_PAGE_SIZE);
+/** @} */
+
 
 /**