target: sunxi: enable kvm support

Unlike x86, kvm for arm has to be built into the kernel.  The kernel
config was prepared with the following command

    make kernel_menuconfig CONFIG_TARGET=platform

Then enable ARM_LPAE, VIRTUALIZATION, KVM in that order

Other config changes are done by the build system.  The following text
tries to explain some of them, for archive purposes probably...

 - BUILD_BIN2C.  It was dropped probably because the prompt is empty and
   no other config option selects it.  bin2c is a host executable for
   converting binary content to a piece of c code for inclusion
 - CRYPTO_DEV_SUN4I_SS.  It was dropped because the dependency CRYPTO_HW
   was not enabled.  Setting that aside, packaging it as a loadbable
   module in lieu of other sunxi specific modules seems more appropriate
 - PGTABLE_LEVELS.  It was changed from 2 to 3 because 3 is the default
   when ARM_LPAE is enabled
 - HAVE_KERNEL_GZIP, etc..  These are enabled in generic config
 - SCHED_INFO, ZLIB_INFLATE.  These were dropped probably for the same
   reason as for BUILD_BIN2C

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

target/linux/sunxi/config-4.4

@@ -2,6 +2,7 @@ CONFIG_ADVISE_SYSCALLS=y
 # CONFIG_AHCI_SUNXI is not set
 CONFIG_ALIGNMENT_TRAP=y
 # CONFIG_APM_EMULATION is not set
+# CONFIG_ARCH_AXXIA is not set
 CONFIG_ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE=y
 CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
 CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
@@ -9,18 +10,21 @@ CONFIG_ARCH_HAS_RESET_CONTROLLER=y
 CONFIG_ARCH_HAS_SG_CHAIN=y
 CONFIG_ARCH_HAS_TICK_BROADCAST=y
 CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
 CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
 CONFIG_ARCH_MULTIPLATFORM=y
 # CONFIG_ARCH_MULTI_CPU_AUTO is not set
 CONFIG_ARCH_MULTI_V6_V7=y
 CONFIG_ARCH_MULTI_V7=y
 CONFIG_ARCH_NR_GPIO=416
+CONFIG_ARCH_PHYS_ADDR_T_64BIT=y
 CONFIG_ARCH_REQUIRE_GPIOLIB=y
 # CONFIG_ARCH_SELECT_MEMORY_MODEL is not set
 # CONFIG_ARCH_SPARSEMEM_DEFAULT is not set
 CONFIG_ARCH_SUNXI=y
 CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
 CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
 CONFIG_ARCH_USE_BUILTIN_BSWAP=y
 CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
 CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
@@ -40,7 +44,7 @@ CONFIG_ARM_HAS_SG_CHAIN=y
 CONFIG_ARM_HEAVY_MB=y
 CONFIG_ARM_L1_CACHE_SHIFT=6
 CONFIG_ARM_L1_CACHE_SHIFT_6=y
-# CONFIG_ARM_LPAE is not set
+CONFIG_ARM_LPAE=y
 CONFIG_ARM_PATCH_PHYS_VIRT=y
 CONFIG_ARM_PMU=y
 CONFIG_ARM_PSCI=y
@@ -57,18 +61,12 @@ CONFIG_AUDIT=y
 CONFIG_AUDIT_GENERIC=y
 CONFIG_AUTO_ZRELADDR=y
 CONFIG_AXP20X_POWER=y
-CONFIG_SWCONFIG_B53=y
-# CONFIG_SWCONFIG_B53_MMAP_DRIVER is not set
-CONFIG_SWCONFIG_B53_PHY_DRIVER=y
-CONFIG_SWCONFIG_B53_PHY_FIXUP=y
-# CONFIG_SWCONFIG_B53_SRAB_DRIVER is not set
 CONFIG_BACKLIGHT_CLASS_DEVICE=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 CONFIG_BACKLIGHT_PWM=y
 CONFIG_BINFMT_MISC=y
 CONFIG_BOUNCE=y
 # CONFIG_BPF_SYSCALL is not set
-CONFIG_BUILD_BIN2C=y
 CONFIG_CACHE_L2X0=y
 CONFIG_CAN=y
 CONFIG_CLKDEV_LOOKUP=y
@@ -114,7 +112,6 @@ CONFIG_CRC16=y
 CONFIG_CRC_T10DIF=y
 CONFIG_CRYPTO_CRC32C=y
 CONFIG_CRYPTO_CRCT10DIF=y
-CONFIG_CRYPTO_DEV_SUN4I_SS=y
 CONFIG_CRYPTO_HASH=y
 CONFIG_CRYPTO_HASH2=y
 CONFIG_CRYPTO_RNG2=y
@@ -205,6 +202,7 @@ CONFIG_HAVE_ARCH_KGDB=y
 CONFIG_HAVE_ARCH_PFN_VALID=y
 CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
 CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
 CONFIG_HAVE_ARM_ARCH_TIMER=y
 # CONFIG_HAVE_BOOTMEM_INFO_NODE is not set
 CONFIG_HAVE_BPF_JIT=y
@@ -223,13 +221,13 @@ CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
 CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
 CONFIG_HAVE_FUNCTION_TRACER=y
 CONFIG_HAVE_GENERIC_DMA_COHERENT=y
+CONFIG_HAVE_GENERIC_RCU_GUP=y
 CONFIG_HAVE_HW_BREAKPOINT=y
 CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
-CONFIG_HAVE_KERNEL_GZIP=y
-CONFIG_HAVE_KERNEL_LZ4=y
-CONFIG_HAVE_KERNEL_LZMA=y
-CONFIG_HAVE_KERNEL_LZO=y
-CONFIG_HAVE_KERNEL_XZ=y
+CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL=y
+CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
+CONFIG_HAVE_KVM_EVENTFD=y
+CONFIG_HAVE_KVM_IRQFD=y
 CONFIG_HAVE_MEMBLOCK=y
 CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
 CONFIG_HAVE_NET_DSA=y
@@ -239,6 +237,7 @@ CONFIG_HAVE_PERF_EVENTS=y
 CONFIG_HAVE_PERF_REGS=y
 CONFIG_HAVE_PERF_USER_STACK_DUMP=y
 CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_RCU_TABLE_FREE=y
 CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
 CONFIG_HAVE_SMP=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
@@ -247,6 +246,7 @@ CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
 CONFIG_HIGHMEM=y
 CONFIG_HIGHPTE=y
 CONFIG_HOTPLUG_CPU=y
+# CONFIG_HUGETLBFS is not set
 CONFIG_HWMON=y
 CONFIG_HW_CONSOLE=y
 CONFIG_HW_RANDOM=y
@@ -280,6 +280,11 @@ CONFIG_KALLSYMS=y
 # CONFIG_KERNEL_MODE_NEON is not set
 CONFIG_KEYBOARD_SUN4I_LRADC=y
 CONFIG_KSM=y
+CONFIG_KVM=y
+CONFIG_KVM_ARM_HOST=y
+CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
+CONFIG_KVM_MMIO=y
+CONFIG_KVM_VFIO=y
 CONFIG_LCD_CLASS_DEVICE=y
 CONFIG_LCD_PLATFORM=y
 CONFIG_LEDS_GPIO=y
@@ -314,6 +319,7 @@ CONFIG_MMC=y
 CONFIG_MMC_BLOCK=y
 # CONFIG_MMC_BLOCK_BOUNCE is not set
 CONFIG_MMC_SUNXI=y
+CONFIG_MMU_NOTIFIER=y
 CONFIG_MODULES_TREE_LOOKUP=y
 CONFIG_MODULES_USE_ELF_REL=y
 # CONFIG_MTD is not set
@@ -352,12 +358,26 @@ CONFIG_PAGE_OFFSET=0xC0000000
 # CONFIG_PCI_SYSCALL is not set
 CONFIG_PERF_EVENTS=y
 CONFIG_PERF_USE_VMALLOC=y
-CONFIG_PGTABLE_LEVELS=2
+CONFIG_PGTABLE_LEVELS=3
 CONFIG_PHYLIB=y
+CONFIG_PHYS_ADDR_T_64BIT=y
 CONFIG_PHY_SUN4I_USB=y
 CONFIG_PHY_SUN9I_USB=y
 CONFIG_PINCTRL=y
 # CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PINCTRL_SUN4I_A10=y
+CONFIG_PINCTRL_SUN5I_A10S=y
+CONFIG_PINCTRL_SUN5I_A13=y
+CONFIG_PINCTRL_SUN6I_A31=y
+CONFIG_PINCTRL_SUN6I_A31S=y
+CONFIG_PINCTRL_SUN6I_A31_R=y
+CONFIG_PINCTRL_SUN7I_A20=y
+CONFIG_PINCTRL_SUN8I_A23=y
+CONFIG_PINCTRL_SUN8I_A23_R=y
+CONFIG_PINCTRL_SUN8I_A33=y
+CONFIG_PINCTRL_SUN8I_A83T=y
+CONFIG_PINCTRL_SUN8I_H3=y
+CONFIG_PINCTRL_SUN9I_A80=y
 CONFIG_PINCTRL_SUNXI_COMMON=y
 # CONFIG_PL310_ERRATA_588369 is not set
 # CONFIG_PL310_ERRATA_727915 is not set
@@ -375,6 +395,7 @@ CONFIG_PPS=y
 CONFIG_PREEMPT=y
 CONFIG_PREEMPT_COUNT=y
 # CONFIG_PREEMPT_NONE is not set
+CONFIG_PREEMPT_NOTIFIERS=y
 CONFIG_PREEMPT_RCU=y
 CONFIG_PRINTK_TIME=y
 CONFIG_PROC_EVENTS=y
@@ -397,13 +418,15 @@ CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_GPIO=y
 CONFIG_RELAY=y
 CONFIG_RESET_CONTROLLER=y
+CONFIG_RFS_ACCEL=y
+CONFIG_RPS=y
 CONFIG_RTC_CLASS=y
 # CONFIG_RTC_DRV_SUNXI is not set
 CONFIG_RWSEM_SPIN_ON_OWNER=y
 CONFIG_RWSEM_XCHGADD_ALGORITHM=y
 CONFIG_SATA_PMP=y
 CONFIG_SCHED_HRTICK=y
-CONFIG_SCHED_INFO=y
+# CONFIG_SCHED_INFO is not set
 CONFIG_SCSI=y
 CONFIG_SDIO_UART=y
 CONFIG_SECURITYFS=y
@@ -444,10 +467,16 @@ CONFIG_SUNXI_WATCHDOG=y
 CONFIG_SUSPEND=y
 CONFIG_SUSPEND_FREEZER=y
 CONFIG_SWCONFIG=y
+CONFIG_SWCONFIG_B53=y
+# CONFIG_SWCONFIG_B53_MMAP_DRIVER is not set
+CONFIG_SWCONFIG_B53_PHY_DRIVER=y
+CONFIG_SWCONFIG_B53_PHY_FIXUP=y
+# CONFIG_SWCONFIG_B53_SRAB_DRIVER is not set
 CONFIG_SWIOTLB=y
 CONFIG_SWP_EMULATE=y
 CONFIG_SYSFS_SYSCALL=y
 CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_SYS_SUPPORTS_HUGETLBFS=y
 CONFIG_THERMAL=y
 CONFIG_THERMAL_DEFAULT_GOV_STEP_WISE=y
 CONFIG_THERMAL_GOV_STEP_WISE=y
@@ -459,6 +488,7 @@ CONFIG_TMPFS_POSIX_ACL=y
 CONFIG_TOUCHSCREEN_PROPERTIES=y
 CONFIG_TOUCHSCREEN_SUN4I=y
 CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNINLINE_SPIN_UNLOCK=y
 CONFIG_USB=y
 CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
 # CONFIG_USB_AUDIO is not set
@@ -481,6 +511,9 @@ CONFIG_VDSO=y
 CONFIG_VECTORS_BASE=0xffff0000
 CONFIG_VFP=y
 CONFIG_VFPv3=y
+# CONFIG_VHOST_CROSS_ENDIAN_LEGACY is not set
+# CONFIG_VHOST_NET is not set
+CONFIG_VIRTUALIZATION=y
 CONFIG_VM_EVENT_COUNTERS=y
 CONFIG_VT=y
 CONFIG_VT_CONSOLE=y
@@ -493,5 +526,4 @@ CONFIG_XZ_DEC_ARM=y
 CONFIG_XZ_DEC_BCJ=y
 CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_ZBOOT_ROM_TEXT=0
-CONFIG_ZLIB_INFLATE=y
 CONFIG_ZONE_DMA_FLAG=0