diff --git a/misc/config_tools/data/cfl-k700-i7/hybrid_rt.xml b/misc/config_tools/data/cfl-k700-i7/hybrid_rt.xml
index b5400e3a0..6ccb2ed18 100644
--- a/misc/config_tools/data/cfl-k700-i7/hybrid_rt.xml
+++ b/misc/config_tools/data/cfl-k700-i7/hybrid_rt.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x800000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/cfl-k700-i7/shared.xml b/misc/config_tools/data/cfl-k700-i7/shared.xml
index e49e52e68..6b535af71 100644
--- a/misc/config_tools/data/cfl-k700-i7/shared.xml
+++ b/misc/config_tools/data/cfl-k700-i7/shared.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE>0x16800000</HV_RAM_SIZE>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x800000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/generic_board/hybrid.xml b/misc/config_tools/data/generic_board/hybrid.xml
index 693600c08..3e5ae619a 100644
--- a/misc/config_tools/data/generic_board/hybrid.xml
+++ b/misc/config_tools/data/generic_board/hybrid.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/generic_board/partitioned.xml b/misc/config_tools/data/generic_board/partitioned.xml
index 67c599b36..59525726e 100644
--- a/misc/config_tools/data/generic_board/partitioned.xml
+++ b/misc/config_tools/data/generic_board/partitioned.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/generic_board/shared.xml b/misc/config_tools/data/generic_board/shared.xml
index d40da15f8..42ae89a5d 100644
--- a/misc/config_tools/data/generic_board/shared.xml
+++ b/misc/config_tools/data/generic_board/shared.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/nuc11tnbi5/hybrid.xml b/misc/config_tools/data/nuc11tnbi5/hybrid.xml
index 9595df72a..30fdb0308 100644
--- a/misc/config_tools/data/nuc11tnbi5/hybrid.xml
+++ b/misc/config_tools/data/nuc11tnbi5/hybrid.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/nuc11tnbi5/partitioned.xml b/misc/config_tools/data/nuc11tnbi5/partitioned.xml
index 8ec51269a..6168099ed 100644
--- a/misc/config_tools/data/nuc11tnbi5/partitioned.xml
+++ b/misc/config_tools/data/nuc11tnbi5/partitioned.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/nuc11tnbi5/shared.xml b/misc/config_tools/data/nuc11tnbi5/shared.xml
index b0f00a290..07b5b82a5 100644
--- a/misc/config_tools/data/nuc11tnbi5/shared.xml
+++ b/misc/config_tools/data/nuc11tnbi5/shared.xml
@@ -41,8 +41,6 @@
     </FEATURES>
     <MEMORY>
       <STACK_SIZE>0x2000</STACK_SIZE>
-      <HV_RAM_SIZE></HV_RAM_SIZE>
-      <HV_RAM_START></HV_RAM_START>
       <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
       <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/qemu/sdc.xml b/misc/config_tools/data/qemu/sdc.xml
index 15a9afea6..f6bf0d7db 100644
--- a/misc/config_tools/data/qemu/sdc.xml
+++ b/misc/config_tools/data/qemu/sdc.xml
@@ -36,7 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE>0x07800000</HV_RAM_SIZE>
         <HV_RAM_START>0x11000000</HV_RAM_START>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x100000000</PLATFORM_RAM_SIZE>
diff --git a/misc/config_tools/data/whl-ipc-i5/hybrid.xml b/misc/config_tools/data/whl-ipc-i5/hybrid.xml
index 010b268a3..b9b2f0580 100644
--- a/misc/config_tools/data/whl-ipc-i5/hybrid.xml
+++ b/misc/config_tools/data/whl-ipc-i5/hybrid.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/whl-ipc-i5/hybrid_rt.xml b/misc/config_tools/data/whl-ipc-i5/hybrid_rt.xml
index 16f5bd895..1b8047673 100644
--- a/misc/config_tools/data/whl-ipc-i5/hybrid_rt.xml
+++ b/misc/config_tools/data/whl-ipc-i5/hybrid_rt.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/whl-ipc-i5/partitioned.xml b/misc/config_tools/data/whl-ipc-i5/partitioned.xml
index 71e38299a..7c4805ccb 100644
--- a/misc/config_tools/data/whl-ipc-i5/partitioned.xml
+++ b/misc/config_tools/data/whl-ipc-i5/partitioned.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/whl-ipc-i5/sdc.xml b/misc/config_tools/data/whl-ipc-i5/sdc.xml
index 1f7efa60e..a8335d98b 100644
--- a/misc/config_tools/data/whl-ipc-i5/sdc.xml
+++ b/misc/config_tools/data/whl-ipc-i5/sdc.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/data/whl-ipc-i5/shared.xml b/misc/config_tools/data/whl-ipc-i5/shared.xml
index 156dd4604..28c0d3a3d 100644
--- a/misc/config_tools/data/whl-ipc-i5/shared.xml
+++ b/misc/config_tools/data/whl-ipc-i5/shared.xml
@@ -36,8 +36,6 @@
 
     <MEMORY>
         <STACK_SIZE>0x2000</STACK_SIZE>
-        <HV_RAM_SIZE/>
-        <HV_RAM_START/>
         <LOW_RAM_SIZE>0x00010000</LOW_RAM_SIZE>
         <PLATFORM_RAM_SIZE>0x400000000</PLATFORM_RAM_SIZE>
     </MEMORY>
diff --git a/misc/config_tools/hv_config/board_defconfig.py b/misc/config_tools/hv_config/board_defconfig.py
index 04a9efc4f..1d158cb61 100644
--- a/misc/config_tools/hv_config/board_defconfig.py
+++ b/misc/config_tools/hv_config/board_defconfig.py
@@ -107,10 +107,6 @@ def get_memory(hv_info, config):
         print("CONFIG_HV_RAM_START={}".format(hex(hv_start_addr)), file=config)
     else:
         print("CONFIG_HV_RAM_START={}".format(hv_info.mem.hv_ram_start), file=config)
-    if not hv_info.mem.hv_ram_size:
-        print("CONFIG_HV_RAM_SIZE={}".format(hex(hv_ram_size)), file=config)
-    else:
-        print("CONFIG_HV_RAM_SIZE={}".format(hv_info.mem.hv_ram_size), file=config)
 
     print("CONFIG_PLATFORM_RAM_SIZE={}".format(hv_info.mem.platform_ram_size), file=config)
     print("CONFIG_LOW_RAM_SIZE={}".format(hv_info.mem.low_ram_size), file=config)
diff --git a/misc/config_tools/hv_config/hv_item.py b/misc/config_tools/hv_config/hv_item.py
index c3f8503da..114bb1f46 100644
--- a/misc/config_tools/hv_config/hv_item.py
+++ b/misc/config_tools/hv_config/hv_item.py
@@ -150,7 +150,6 @@ class Memory:
         self.stack_size = 0
         self.low_ram_size = 0
         self.hv_ram_start = 0
-        self.hv_ram_size = 0
         self.platform_ram_size = 0
         self.sos_ram_size = 0
         self.uos_ram_size = 0
@@ -160,7 +159,6 @@ class Memory:
     def get_info(self):
         self.stack_size = common.get_hv_item_tag(self.hv_file, "MEMORY", "STACK_SIZE")
         self.low_ram_size = common.get_hv_item_tag(self.hv_file, "MEMORY", "LOW_RAM_SIZE")
-        self.hv_ram_size = common.get_hv_item_tag(self.hv_file, "MEMORY", "HV_RAM_SIZE")
         self.hv_ram_start = common.get_hv_item_tag(self.hv_file, "MEMORY", "HV_RAM_START")
         self.platform_ram_size = common.get_hv_item_tag(self.hv_file, "MEMORY", "PLATFORM_RAM_SIZE")
         self.ivshmem_enable = common.get_hv_item_tag(self.hv_file, "FEATURES", "IVSHMEM", "IVSHMEM_ENABLED")
diff --git a/misc/config_tools/schema/config.xsd b/misc/config_tools/schema/config.xsd
index cd56386cd..cd5031755 100644
--- a/misc/config_tools/schema/config.xsd
+++ b/misc/config_tools/schema/config.xsd
@@ -195,12 +195,7 @@ physical core. Each core uses one stack for normal operation and another
 three for specific exceptions.</xs:documentation>
       </xs:annotation>
     </xs:element>
-    <xs:element name="HV_RAM_SIZE" type="HVRamSizeType">
-      <xs:annotation>
-        <xs:documentation>Size of the RAM region used by the hypervisor.</xs:documentation>
-      </xs:annotation>
-    </xs:element>
-    <xs:element name="HV_RAM_START" type="HVRamStartType">
+    <xs:element name="HV_RAM_START" type="HexFormat" default="0x00200000">
       <xs:annotation>
         <xs:documentation>The 2MB-aligned starting physical address of
 the RAM region used by the hypervisor.</xs:documentation>
diff --git a/misc/config_tools/schema/types.xsd b/misc/config_tools/schema/types.xsd
index f0cb41e3c..c7e6e61d9 100644
--- a/misc/config_tools/schema/types.xsd
+++ b/misc/config_tools/schema/types.xsd
@@ -26,20 +26,6 @@
   </xs:restriction>
 </xs:simpleType>
 
-<xs:simpleType name="HVRamSizeType">
-  <xs:annotation>
-    <xs:documentation>Either empty, or an Integer value in hexadecimal format.</xs:documentation>
-  </xs:annotation>
-  <xs:union memberTypes="None HexFormat" />
-</xs:simpleType>
-
-<xs:simpleType name="HVRamStartType">
-  <xs:annotation>
-    <xs:documentation>Either empty, or an Integer value in hexadecimal format.</xs:documentation>
-  </xs:annotation>
-  <xs:union memberTypes="None HexFormat" />
-</xs:simpleType>
-
 <xs:simpleType name="KernLoadAddr">
   <xs:annotation>
     <xs:documentation>Either empty, or an Integer value in hexadecimal format.</xs:documentation>
diff --git a/misc/config_tools/static_allocators/hv_ram.py b/misc/config_tools/static_allocators/hv_ram.py
deleted file mode 100644
index eb7cee2bb..000000000
--- a/misc/config_tools/static_allocators/hv_ram.py
+++ /dev/null
@@ -1,62 +0,0 @@
-#!/usr/bin/env python3
-#
-# Copyright (C) 2021 Intel Corporation. All rights reserved.
-#
-# SPDX-License-Identifier: BSD-3-Clause
-#
-
-import sys, os
-sys.path.append(os.path.join(os.path.dirname(os.path.abspath(__file__)), '..', 'library'))
-import common, board_cfg_lib, scenario_cfg_lib
-
-HV_RAM_SIZE_MAX = 0x40000000
-
-MEM_ALIGN = 2 * common.SIZE_M
-
-def fn(board_etree, scenario_etree, allocation_etree):
-    # this dictonary mapped with 'address start':'mem range'
-    ram_range = {}
-
-    post_launched_vm_num = 0
-    for id in common.VM_TYPES:
-        if common.VM_TYPES[id] in scenario_cfg_lib.VM_DB and \
-                        scenario_cfg_lib.VM_DB[common.VM_TYPES[id]]["load_type"] == "POST_LAUNCHED_VM":
-            post_launched_vm_num += 1
-    hv_ram_size = common.HV_BASE_RAM_SIZE + common.POST_LAUNCHED_VM_RAM_SIZE * post_launched_vm_num
-
-    ivshmem_enabled = common.get_node("//IVSHMEM_ENABLED/text()", scenario_etree)
-    total_shm_size = 0
-    if ivshmem_enabled == 'y':
-        raw_shmem_regions = scenario_etree.xpath("//IVSHMEM_REGION/text()")
-        for raw_shm in raw_shmem_regions:
-            if raw_shm.strip() == '':
-                continue
-            raw_shm_splited = raw_shm.split(',')
-            if len(raw_shm_splited) == 3 and raw_shm_splited[0].strip() != '' \
-                    and raw_shm_splited[1].strip() != '' and len(raw_shm_splited[2].strip().split(':')) >= 1:
-                try:
-                    size = raw_shm_splited[1].strip()
-                    int_size = int(size) * 0x100000
-                    total_shm_size += int_size
-                except Exception as e:
-                    print(e)
-    hv_ram_size += 2 * max(total_shm_size, 0x200000)
-    assert(hv_ram_size <= HV_RAM_SIZE_MAX)
-
-    # reseve 16M memory for hv sbuf, ramoops, etc.
-    reserved_ram = 0x1000000
-    # We recommend to put hv ram start address high than 0x10000000 to
-    # reduce memory conflict with GRUB/SOS Kernel.
-    hv_start_offset = 0x10000000
-    total_size = reserved_ram + hv_ram_size
-    for start_addr in list(board_cfg_lib.USED_RAM_RANGE):
-        if hv_start_offset <= start_addr < 0x80000000:
-            del board_cfg_lib.USED_RAM_RANGE[start_addr]
-    ram_range = board_cfg_lib.get_ram_range()
-    avl_start_addr = board_cfg_lib.find_avl_memory(ram_range, str(total_size), hv_start_offset)
-    hv_start_addr = int(avl_start_addr, 16) + int(hex(reserved_ram), 16)
-    hv_start_addr = common.round_up(hv_start_addr, MEM_ALIGN)
-    board_cfg_lib.USED_RAM_RANGE[hv_start_addr] = total_size
-
-    common.append_node("/acrn-config/hv/MEMORY/HV_RAM_START", hex(hv_start_addr), allocation_etree)
-    common.append_node("/acrn-config/hv/MEMORY/HV_RAM_SIZE", hex(hv_ram_size), allocation_etree)
diff --git a/misc/config_tools/xforms/config_common.xsl b/misc/config_tools/xforms/config_common.xsl
index e4bb228d4..0fc699595 100644
--- a/misc/config_tools/xforms/config_common.xsl
+++ b/misc/config_tools/xforms/config_common.xsl
@@ -140,11 +140,6 @@
       <xsl:with-param name="default" select="//allocation-data/acrn-config/hv/MEMORY/HV_RAM_START" />
     </xsl:call-template>
 
-    <xsl:call-template name="integer-by-key">
-      <xsl:with-param name="key" select="'HV_RAM_SIZE'" />
-      <xsl:with-param name="default" select="//allocation-data/acrn-config/hv/MEMORY/HV_RAM_SIZE" />
-    </xsl:call-template>
-
     <xsl:call-template name="integer-by-key">
       <xsl:with-param name="key" select="'PLATFORM_RAM_SIZE'" />
     </xsl:call-template>