WiP: linux config global tweaks overhaul, unifying kernel configs and…

… keeping important board related perks

CONFIG_PREEMPT_NONE=y: Remove preemptiveness for servers. Under heads, we are single tasking. No point having this big thing in kernel https://lwn.net/Articles/746780/
IO scheduler: only enable CONFIG_MQ_IOSCHED_DEADLINE=y since we want maximum throughput and do not have concurrent tasks
CONFIG_CPU_ISOLATION=y : Enable CPU Isolation accross all boards: this permits to make sure that the kernel tasks running on a CPU are not distrurbed bu user tasks
CONFIG_MULTIUSER not defined: Removing cluttering since we are single root user under Heads anyway
CONFIG_IO_URING=y : limit number of copy operations between kernel and user space from apps
CONFIG_ZONE_DMA not defined: relevant for older hardware (less then 32bit addressing space)
CONFIG_X86_MPPARSE not defined: relevant for older smp systems
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE is enabled and SCHEDUTIL is disabled: we want performance with CPU sched with deadline IO.
CONFIG_PERF_EVENTS_INTEL_UNCORE and CONFIG_PERF_EVENTS_INTEL_CSTATE not defined: we want max perf on Heads
CONFIG_X86_VSYSCALL_EMULATION not defined: no need for syscall emulation under Heads
CONFIG_SECCOMP not defined : usefull if BPF is enabled and used.
CONFIG_ACPI_SPCR_TABLE=y : usefull for serial redirection table and earlycon
CONFIG_PCI_MMCONFIG CONFIG_MMCONF_FAM10H unset but for kgpe-d16 which is either fam10h of fam15h
CONFIG_DM_SNAPSHOT=y CONFIG_DM_THIN_PROVISIONING=y so that recovery shell can provide LVM/DM functionality in later PR.
CONFIG_EXFAT_FS=y so that exfat preformated thumb drives can work out of the box
Adjust CONFIG_HW_RANDOM per platform, removing CONFIG_HW_RANDOM_TIMERIOMEM
Only support processor family needed per board (AMD only AMD, Intel only Intel, removing CONFIG_CPU_SUP_HYGON CONFIG_CPU_SUP_HYGON CONFIG_CPU_SUP_CENTAUR CONFIG_CPU_SUP_ZHAOXIN CONFIG_CPU_SUP_ZHAOXIN everywhere

Removed unused compiled modules unpacked under modules.cpio
Removed not needed crypto modules compiled in or as modules, reviewed from linuxboot#1396 (comment) :
CONFIG_CRYPTO=y
CONFIG_CRYPTO_ALGAPI=y
CONFIG_CRYPTO_ALGAPI2=y
CONFIG_CRYPTO_AEAD=y
CONFIG_CRYPTO_AEAD2=y
CONFIG_CRYPTO_SKCIPHER=y
CONFIG_CRYPTO_SKCIPHER2=y
CONFIG_CRYPTO_HASH=y
CONFIG_CRYPTO_HASH2=y
CONFIG_CRYPTO_RNG=y
CONFIG_CRYPTO_RNG2=y
CONFIG_CRYPTO_AKCIPHER2=y
CONFIG_CRYPTO_KPP2=y
CONFIG_CRYPTO_ACOMP2=y
CONFIG_CRYPTO_MANAGER=y
CONFIG_CRYPTO_MANAGER2=y
CONFIG_CRYPTO_USER=y
CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=y
CONFIG_CRYPTO_NULL=y
CONFIG_CRYPTO_NULL2=y
CONFIG_CRYPTO_CRYPTD=y
CONFIG_CRYPTO_AUTHENC=y
CONFIG_CRYPTO_SIMD=y
CONFIG_CRYPTO_GLUE_HELPER_X86=y
CONFIG_CRYPTO_CBC=y
CONFIG_CRYPTO_ECB=y
CONFIG_CRYPTO_XTS=y
CONFIG_CRYPTO_ESSIV=y
CONFIG_CRYPTO_HMAC=y
CONFIG_CRYPTO_CRC32C=y
CONFIG_CRYPTO_CRC32C_INTEL=y
CONFIG_CRYPTO_MD5=y
CONFIG_CRYPTO_SHA1=y
CONFIG_CRYPTO_SHA1_SSSE3=y
CONFIG_CRYPTO_SHA256_SSSE3=y
CONFIG_CRYPTO_SHA512_SSSE3=y
CONFIG_CRYPTO_SHA256=y
CONFIG_CRYPTO_SHA512=y
CONFIG_CRYPTO_AES_NI_INTEL=y
CONFIG_CRYPTO_USER_API=y
CONFIG_CRYPTO_USER_API_HASH=y
CONFIG_CRYPTO_USER_API_SKCIPHER=y
CONFIG_CRYPTO_USER_API_RNG=y
CONFIG_CRYPTO_USER_API_AEAD=y
CONFIG_CRYPTO_HASH_INFO=y
CONFIG_CRYPTO_LIB_AES=y
CONFIG_CRYPTO_LIB_SHA256=y

config/linux-x230-flash.config

@@ -97,7 +97,6 @@ CONFIG_PREEMPT_NONE=y
 CONFIG_TICK_CPU_ACCOUNTING=y
 # CONFIG_VIRT_CPU_ACCOUNTING_GEN is not set
 # CONFIG_IRQ_TIME_ACCOUNTING is not set
-# CONFIG_BSD_PROCESS_ACCT is not set
 # CONFIG_PSI is not set
 # end of CPU/Task time and stats accounting
 
@@ -132,7 +131,6 @@ CONFIG_ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH=y
 CONFIG_CC_HAS_INT128=y
 CONFIG_ARCH_SUPPORTS_INT128=y
 # CONFIG_CGROUPS is not set
-# CONFIG_NAMESPACES is not set
 # CONFIG_CHECKPOINT_RESTORE is not set
 # CONFIG_SCHED_AUTOGROUP is not set
 # CONFIG_SYSFS_DEPRECATED is not set
@@ -157,7 +155,7 @@ CONFIG_LD_ORPHAN_WARN=y
 CONFIG_SYSCTL_EXCEPTION_TRACE=y
 CONFIG_HAVE_PCSPKR_PLATFORM=y
 CONFIG_EXPERT=y
-CONFIG_MULTIUSER=y
+# CONFIG_MULTIUSER is not set
 # CONFIG_SGETMASK_SYSCALL is not set
 # CONFIG_SYSFS_SYSCALL is not set
 # CONFIG_FHANDLE is not set
@@ -247,7 +245,7 @@ CONFIG_CC_HAS_SANE_STACKPROTECTOR=y
 #
 # Processor type and features
 #
-CONFIG_ZONE_DMA=y
+# CONFIG_ZONE_DMA is not set
 CONFIG_SMP=y
 CONFIG_X86_FEATURE_NAMES=y
 CONFIG_X86_MPPARSE=y
@@ -457,7 +455,8 @@ CONFIG_GENERIC_ENTRY=y
 CONFIG_HAVE_OPROFILE=y
 CONFIG_OPROFILE_NMI_TIMER=y
 # CONFIG_KPROBES is not set
-# CONFIG_JUMP_LABEL is not set
+CONFIG_JUMP_LABEL=y
+# CONFIG_STATIC_KEYS_SELFTEST is not set
 # CONFIG_STATIC_CALL_SELFTEST is not set
 CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS=y
 CONFIG_ARCH_USE_BUILTIN_BSWAP=y
@@ -618,14 +617,13 @@ CONFIG_SPARSEMEM_MANUAL=y
 CONFIG_SPARSEMEM=y
 CONFIG_SPARSEMEM_EXTREME=y
 CONFIG_SPARSEMEM_VMEMMAP_ENABLE=y
-# CONFIG_SPARSEMEM_VMEMMAP is not set
+CONFIG_SPARSEMEM_VMEMMAP=y
 CONFIG_HAVE_FAST_GUP=y
 # CONFIG_MEMORY_HOTPLUG is not set
 CONFIG_SPLIT_PTLOCK_CPUS=4
 # CONFIG_COMPACTION is not set
 # CONFIG_PAGE_REPORTING is not set
 CONFIG_PHYS_ADDR_T_64BIT=y
-# CONFIG_BOUNCE is not set
 CONFIG_VIRT_TO_BUS=y
 CONFIG_MMU_NOTIFIER=y
 # CONFIG_KSM is not set
@@ -1034,7 +1032,7 @@ CONFIG_TTY_PRINTK_LEVEL=6
 # CONFIG_IPMI_HANDLER is not set
 # CONFIG_IPMB_DEVICE_INTERFACE is not set
 CONFIG_HW_RANDOM=y
-CONFIG_HW_RANDOM_TIMERIOMEM=y
+# CONFIG_HW_RANDOM_TIMERIOMEM is not set
 CONFIG_HW_RANDOM_INTEL=y
 # CONFIG_HW_RANDOM_AMD is not set
 # CONFIG_HW_RANDOM_BA431 is not set
@@ -2139,7 +2137,6 @@ CONFIG_UNICODE=y
 #
 # CONFIG_KEYS is not set
 # CONFIG_SECURITY_DMESG_RESTRICT is not set
-# CONFIG_SECURITY is not set
 # CONFIG_SECURITYFS is not set
 # CONFIG_PAGE_TABLE_ISOLATION is not set
 CONFIG_HAVE_HARDENED_USERCOPY_ALLOCATOR=y