hv: enable MTRR virtualization

- unmask MTRR from guest CPUID to enable MTRR
- MTRR virtualization can be disabled by commenting out CONFIG_MTRR_ENABLED

Signed-off-by: bliu11 <baohong.liu@intel.com>
Signed-off-by: Zide Chen <zide.chen@intel.com>
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>

Author: ZideChen0

hypervisor/arch/x86/cpuid.c

@@ -283,8 +283,10 @@ void guest_cpuid(struct vcpu *vcpu,
 		*ebx &= ~APIC_ID_MASK;
 		*ebx |= (apicid & APIC_ID_MASK);
 
+#ifndef CONFIG_MTRR_ENABLED
 		/* mask mtrr */
 		*edx &= ~CPUID_EDX_MTRR;
+#endif
 
 		/* Patching X2APIC, X2APIC mode is disabled by default. */
 		if (x2apic_enabled)

hypervisor/arch/x86/guest/vcpu.c

@@ -107,6 +107,10 @@ int create_vcpu(int cpu_id, struct vm *vm, struct vcpu **rtn_vcpu_handle)
 	/* Create per vcpu vlapic */
 	vlapic_create(vcpu);
 
+#ifdef CONFIG_MTRR_ENABLED
+	init_mtrr(vcpu);
+#endif
+
 	/* Populate the return handle */
 	*rtn_vcpu_handle = vcpu;
 

hypervisor/bsp/sbl/include/bsp/bsp_cfg.h

@@ -21,4 +21,5 @@
 #define	CONFIG_LOW_RAM_SIZE	0x000CF000
 #define	CONFIG_RAM_START	0x6E000000
 #define	CONFIG_RAM_SIZE		0x02000000	/* 32M */
+#define CONFIG_MTRR_ENABLED     1
 #endif /* BSP_CFG_H */

hypervisor/bsp/uefi/include/bsp/bsp_cfg.h

@@ -25,4 +25,5 @@
 #define	CONFIG_GPU_SBDF		0x00000010	/* 0000:00:02.0 */
 #define CONFIG_EFI_STUB       1
 #define CONFIG_UEFI_OS_LOADER_NAME  "\\EFI\\org.clearlinux\\bootloaderx64.efi"
+#define CONFIG_MTRR_ENABLED		1
 #endif /* BSP_CFG_H */