diff --git a/hypervisor/arch/x86/Kconfig b/hypervisor/arch/x86/Kconfig
index 20cb752de..11e485437 100644
--- a/hypervisor/arch/x86/Kconfig
+++ b/hypervisor/arch/x86/Kconfig
@@ -276,6 +276,15 @@ config CDP_ENABLED
 	  prioritization of code and data fetches to the L2 or L3 cache in a
 	  software configurable manner, depending on hardware support.
 
+config PSRAM_ENABLED
+	bool "Enable pseudo-SRAM (pSRAM) support"
+	depends on !CDP_ENABLED
+	default n
+	help
+	  This will enable RTVM to make use of pSRAM to improve the performance
+	  of Real-Time applications. pSRAM essentially a block of cache, and is separated via
+	  CAT and protected by some methods.  pSRAM support and CDP support cannot co-exist.
+
 config GPU_SBDF
 	hex "Segment, Bus, Device, and function of the GPU"
 	depends on ACPI_PARSE_ENABLED
diff --git a/hypervisor/arch/x86/guest/vm.c b/hypervisor/arch/x86/guest/vm.c
index 186059b63..3d725abb9 100644
--- a/hypervisor/arch/x86/guest/vm.c
+++ b/hypervisor/arch/x86/guest/vm.c
@@ -364,6 +364,11 @@ static void prepare_sos_vm_memmap(struct acrn_vm *vm)
 	/* unmap PCIe MMCONFIG region since it's owned by hypervisor */
 	pci_mmcfg = get_mmcfg_region();
 	ept_del_mr(vm, (uint64_t *)vm->arch_vm.nworld_eptp, pci_mmcfg->address, get_pci_mmcfg_size(pci_mmcfg));
+
+	/* TODO: remove pSRAM from SOS prevent SOS to use clflush to flush the pSRAM cache.
+	 * If we remove this EPT mapping from the SOS, the ACRN-DM can't do pSRAM EPT mapping
+	 * because the SOS can't get the HPA of this memory region.
+	 */
 }
 
 /* Add EPT mapping of EPC reource for the VM */