HV: correct ept page array usage

Currently ept_pages_info[] is initialized with first element only that force
VM of id 0 using SOS EPT pages. This is incorrect for logical partition and
hybrid scenario. Considering SOS_RAM_SIZE and UOS_RAM_SIZE are configured
separately, we should use different ept pages accordingly.

So, the PRE_VM_NUM/SOS_VM_NUM and MAX_POST_VM_NUM macros are introduced to
resolve this issue. The macros would be generated by acrn-config tool when
user configure ACRN for their specific scenario.

One more thing, that when UOS_RAM_SIZE is less then 2GB, the EPT address
range should be (4G + PLATFORM_HI_MMIO_SIZE).

Tracked-On: #4458

Signed-off-by: Victor Sun <victor.sun@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

hypervisor/include/arch/x86/mmu.h

@@ -40,6 +40,7 @@
 #define MEM_1M		(MEM_1K * 1024U)
 #define MEM_2M		(MEM_1M * 2U)
 #define MEM_1G		(MEM_1M * 1024U)
+#define MEM_2G		(1024UL * 1024UL * 1024UL * 2UL)
 
 #ifndef ASSEMBLER
 

hypervisor/include/arch/x86/page.h

@@ -29,7 +29,9 @@
  * - Guest OS won't re-program device MMIO bars to the address not covered by
  *   this EPT_ADDRESS_SPACE.
  */
-#define EPT_ADDRESS_SPACE(size)	(((size) != 0UL) ? ((size) + PLATFORM_LO_MMIO_SIZE + PLATFORM_HI_MMIO_SIZE) : 0UL)
+#define EPT_ADDRESS_SPACE(size)		((size > MEM_2G) ?	\
+			((size) + PLATFORM_LO_MMIO_SIZE + PLATFORM_HI_MMIO_SIZE)	\
+			: (MEM_2G + PLATFORM_LO_MMIO_SIZE + PLATFORM_HI_MMIO_SIZE))
 
 #define TRUSTY_PML4_PAGE_NUM(size)	(1UL)
 #define TRUSTY_PDPT_PAGE_NUM(size)	(1UL)

hypervisor/include/arch/x86/vm_config.h

@@ -14,6 +14,8 @@
 #include <vm_configurations.h>
 #include <sgx.h>
 
+#define CONFIG_MAX_VM_NUM	(PRE_VM_NUM + SOS_VM_NUM + MAX_POST_VM_NUM)
+
 #define AFFINITY_CPU(n)		(1U << (n))
 #define MAX_VCPUS_PER_VM	MAX_PCPU_NUM
 #define MAX_VUART_NUM_PER_VM	2U