arm64: openeuler_defconfig: Adjust page size to 4K and VA_BITS to 48

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4HDHZ
CVE: NA

-------------------------------------------------

For arm64 openeuler_defconfig:
Change default page size from 64K to 4K,
then enable CONFIG_ARM64_VA_BITS_48.

Following configs are involved:
CONFIG_ARM64_PAGE_SHIFT=12
CONFIG_ARM64_CONT_PTE_SHIFT=4
CONFIG_ARM64_CONT_PMD_SHIFT=4
CONFIG_ARCH_MMAP_RND_BITS_MIN=18
CONFIG_ARCH_MMAP_RND_BITS_MAX=33
CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
CONFIG_PGTABLE_LEVELS=4
CONFIG_ARM64_4K_PAGES=y
CONFIG_ARM64_64K_PAGES=n
CONFIG_ARM64_VA_BITS_48=y
CONFIG_ARM64_VA_BITS_52=n
CONFIG_ARM64_VA_BITS=48
CONFIG_ARM64_PA_BITS_48=y
CONFIG_ARM64_PA_BITS_52=n
CONFIG_ARM64_PA_BITS=48
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_FORCE_MAX_ZONEORDER=11
CONFIG_ARCH_MMAP_RND_BITS=18
CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: NXie XiuQi <xiexiuqi@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

arch/arm64/configs/openeuler_defconfig

@@ -250,12 +250,12 @@ CONFIG_TRACEPOINTS=y
 CONFIG_ARM64=y
 CONFIG_64BIT=y
 CONFIG_MMU=y
-CONFIG_ARM64_PAGE_SHIFT=16
-CONFIG_ARM64_CONT_PTE_SHIFT=5
-CONFIG_ARM64_CONT_PMD_SHIFT=5
-CONFIG_ARCH_MMAP_RND_BITS_MIN=14
-CONFIG_ARCH_MMAP_RND_BITS_MAX=14
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=7
+CONFIG_ARM64_PAGE_SHIFT=12
+CONFIG_ARM64_CONT_PTE_SHIFT=4
+CONFIG_ARM64_CONT_PMD_SHIFT=4
+CONFIG_ARCH_MMAP_RND_BITS_MIN=18
+CONFIG_ARCH_MMAP_RND_BITS_MAX=33
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
 CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MAX=16
 CONFIG_STACKTRACE_SUPPORT=y
 CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
@@ -273,7 +273,7 @@ CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE=y
 CONFIG_SMP=y
 CONFIG_KERNEL_MODE_NEON=y
 CONFIG_FIX_EARLYCON_MEM=y
-CONFIG_PGTABLE_LEVELS=3
+CONFIG_PGTABLE_LEVELS=4
 CONFIG_ARCH_SUPPORTS_UPROBES=y
 CONFIG_ARCH_PROC_KCORE_TEXT=y
 
@@ -365,17 +365,18 @@ CONFIG_HISILICON_ERRATUM_HIP08_RU_PREFETCH=y
 CONFIG_SOCIONEXT_SYNQUACER_PREITS=y
 # end of ARM errata workarounds via the alternatives framework
 
-# CONFIG_ARM64_4K_PAGES is not set
+CONFIG_ARM64_4K_PAGES=y
 # CONFIG_ARM64_16K_PAGES is not set
-CONFIG_ARM64_64K_PAGES=y
+# CONFIG_ARM64_64K_PAGES is not set
+# CONFIG_ARM64_VA_BITS_39 is not set
 # CONFIG_ARM64_VA_BITS_42 is not set
-# CONFIG_ARM64_VA_BITS_48 is not set
-CONFIG_ARM64_VA_BITS_52=y
+CONFIG_ARM64_VA_BITS_48=y
+# CONFIG_ARM64_VA_BITS_52 is not set
 # CONFIG_ARM64_FORCE_52BIT is not set
-CONFIG_ARM64_VA_BITS=52
-# CONFIG_ARM64_PA_BITS_48 is not set
-CONFIG_ARM64_PA_BITS_52=y
-CONFIG_ARM64_PA_BITS=52
+CONFIG_ARM64_VA_BITS=48
+CONFIG_ARM64_PA_BITS_48=y
+# CONFIG_ARM64_PA_BITS_52 is not set
+CONFIG_ARM64_PA_BITS=48
 # CONFIG_CPU_BIG_ENDIAN is not set
 CONFIG_CPU_LITTLE_ENDIAN=y
 CONFIG_SCHED_MC=y
@@ -402,6 +403,7 @@ CONFIG_ARCH_SELECT_MEMORY_MODEL=y
 CONFIG_HAVE_ARCH_PFN_VALID=y
 CONFIG_HW_PERF_EVENTS=y
 CONFIG_SYS_SUPPORTS_HUGETLBFS=y
+CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
 CONFIG_ARCH_HAS_CACHE_LINE_SIZE=y
 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y
 CONFIG_PARAVIRT=y
@@ -411,7 +413,7 @@ CONFIG_KEXEC=y
 CONFIG_CRASH_DUMP=y
 CONFIG_ARM64_CPU_PARK=y
 # CONFIG_XEN is not set
-CONFIG_FORCE_MAX_ZONEORDER=14
+CONFIG_FORCE_MAX_ZONEORDER=11
 CONFIG_UNMAP_KERNEL_AT_EL0=y
 CONFIG_RODATA_FULL_DEFAULT_ENABLED=y
 CONFIG_ARM64_PMEM_RESERVE=y
@@ -774,9 +776,9 @@ CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
 CONFIG_MODULES_USE_ELF_RELA=y
 CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
 CONFIG_HAVE_ARCH_MMAP_RND_BITS=y
-CONFIG_ARCH_MMAP_RND_BITS=14
+CONFIG_ARCH_MMAP_RND_BITS=18
 CONFIG_HAVE_ARCH_MMAP_RND_COMPAT_BITS=y
-CONFIG_ARCH_MMAP_RND_COMPAT_BITS=7
+CONFIG_ARCH_MMAP_RND_COMPAT_BITS=11
 CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
 CONFIG_CLONE_BACKWARDS=y
 CONFIG_OLD_SIGSUSPEND3=y