linux-yocto/4.12: update to v4.12.20

Updating to Paul Gortmaker's 4.12.20 release, which comprises
the following commits:

   26041ea62c10 Linux 4.12.20
   80da9fc42759 kvm: x86: fix RSM when PCID is non-zero
   94ff73e84af3 x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN
   1c6aaef6e08f x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm
   a14ac5bc4953 x86/tlb: Drop the _GPL from the cpu_tlbstate export
   a95cc558c4ba x86/events/intel/ds: Use the proper cache flush method for mapping ds buffers
   e94e2440d266 x86/kaslr: Fix the vaddr_end mess
   ec2c4771ab78 x86/mm: Map cpu_entry_area at the same place on 4/5 level
   21390d1cf697 x86/mm: Set MODULES_END to 0xffffffffff000000
   a657f6bde81f x86/process: Define cpu_tss_rw in same section as declaration
   f0ca9ecfacd8 x86/pti: Switch to kernel CR3 at early in entry_SYSCALL_compat()
   882c46ebc1eb x86/pti: Make sure the user/kernel PTEs match
   0920dd036f51 x86/cpu, x86/pti: Do not enable PTI on AMD processors
   2832199b24b5 x86/pti: Enable PTI by default
   abe84bdf0450 mm/mprotect: add a cond_resched() inside change_pmd_range()
   79c74e87dd70 kernel/acct.c: fix the acct->needcheck check in check_free_space()
   8097b1b3ed8e x86/espfix/64: Fix espfix double-fault handling on 5-level systems
   1a698b5094c6 x86/decoder: Fix and update the opcodes map
   3bc0a0230c85 x86/idt: Load idt early in start_secondary
   96523a6b3c9f x86/ldt: Make LDT pgtable free conditional
   0930c225b7fd x86/ldt: Plug memory leak in error path
   7b392c0fd57c x86/mm: Remove preempt_disable/enable() from __native_flush_tlb()
   a569be19aca4 x86/smpboot: Remove stale TLB flush invocations
   171c680cd430 x86/ldt: Make the LDT mapping RO
   b20a4e9c0824 x86/mm/dump_pagetables: Allow dumping current pagetables
   4cb373d5878c x86/mm/dump_pagetables: Check user space page table for WX pages
   419aaf9950b0 x86/mm/dump_pagetables: Add page table directory to the debugfs VFS hierarchy
   f2ea744855ef x86/mm/pti: Add Kconfig
   21ee6ef0b6da x86/dumpstack: Indicate in Oops whether PTI is configured and enabled
   4792df02eaa2 x86/mm: Clarify the whole ASID/kernel PCID/user PCID naming
   079aafe7e55e x86/mm: Use INVPCID for __native_flush_tlb_single()
   f82db33b19f6 x86/mm: Optimize RESTORE_CR3
   156823d62b52 x86/mm: Use/Fix PCID to optimize user/kernel switches
   3c6ddf8979d7 x86/mm: Abstract switching CR3
   842c1304aa61 x86/mm: Allow flushing for future ASID switches
   54ccd28274b7 x86/pti: Map the vsyscall page if needed
   05347c693d0a x86/pti: Put the LDT in its own PGD if PTI is on
   86aa46082664 x86/mm/64: Make a full PGD-entry size hole in the memory map
   bd91c7622d4b x86/events/intel/ds: Map debug buffers in cpu_entry_area
   f2a19cac5364 x86/cpu_entry_area: Add debugstore entries to cpu_entry_area
   788856fff986 x86/mm/pti: Map ESPFIX into user space
   2946dc511e38 x86/mm/pti: Share entry text PMD
   8f01f3ca70af x86/entry: Align entry text section to PMD boundary
   419ac1b145f8 x86/mm/pti: Share cpu_entry_area with user space page tables
   43ac2d12a830 x86/mm/pti: Force entry through trampoline when PTI active
   c0226c119bb4 x86/mm/pti: Add functions to clone kernel PMDs
   0de21941f44c x86/mm/pti: Populate user PGD
   dc46e9eafde8 x86/mm/pti: Allocate a separate user PGD
   a3293057588e x86/mm/pti: Allow NX poison to be set in p4d/pgd
   b51aa0399145 x86/mm/pti: Add mapping helper functions
   66d1447e7cd8 x86/pti: Add the pti= cmdline option and documentation
   399981179cc2 x86/mm/pti: Add infrastructure for page table isolation
   ff4703d2378d x86/mm/pti: Prepare the x86/entry assembly code for entry/exit CR3 switching
   6eb83fa9c76d x86/mm/pti: Disable global pages if PAGE_TABLE_ISOLATION=y
   0cbc392772c6 x86/cpufeatures: Add X86_BUG_CPU_INSECURE
   bb426b09a2b3 nohz: Prevent a timer interrupt storm in tick_nohz_stop_sched_tick()
   f8da34e6aea2 ring-buffer: Do no reuse reader page if still in use
   f56cc813891f ring-buffer: Mask out the info bits when returning buffer page length
   99df0a6bd678 x86/cpu_entry_area: Prevent wraparound in setup_cpu_entry_area_ptes() on 32bit
   dd6eac2b6f66 init: Invoke init_espfix_bsp() from mm_init()
   fc78bbdec893 x86/cpu_entry_area: Move it out of the fixmap
   b73f4c11bfb7 x86/cpu_entry_area: Move it to a separate unit
   90383f5be7ac x86/mm: Create asm/invpcid.h
   f7938aecc9e1 x86/mm: Put MMU to hardware ASID translation in one place
   21c7af3777f8 x86/mm: Remove hard-coded ASID limit checks
   546fe7d48686 x86/mm: Move the CR3 construction functions to tlbflush.h
   029ed77f57b6 x86/mm: Add comments to clarify which TLB-flush functions are supposed to flush what
   c786774ceccb x86/mm: Remove superfluous barriers
   f0c8c4bd2347 x86/mm: Use __flush_tlb_one() for kernel memory
   c1d18bf3f32b x86/microcode: Dont abuse the TLB-flush interface
   cba3ab6a6841 x86/uv: Use the right TLB-flush API
   8a7c2006beba x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack
   d6a432d4d3a0 x86/doc: Remove obvious weirdnesses from the x86 MM layout documentation
   07e8a63c2c4f x86/mm/64: Improve the memory map documentation
   1dddc45476c4 x86/ldt: Prevent LDT inheritance on exec
   93439585326e x86/ldt: Rework locking
   315b737482ac arch, mm: Allow arch_dup_mmap() to fail
   3cd977c67053 x86/vsyscall/64: Warn and fail vsyscall emulation in NATIVE mode
   e5667337a507 x86/vsyscall/64: Explicitly set _PAGE_USER in the pagetable hierarchy
   4664833b9c38 x86/mm/dump_pagetables: Make the address hints correct and readable
   9ed67a029dd7 x86/mm/dump_pagetables: Check PAGE_PRESENT for real
   0f9f378903ae x86/Kconfig: Limit NR_CPUS on 32-bit to a sane amount
   358a83a1de54 x86/cpufeatures: Make CPU bugs sticky
   ae16a824dd62 x86/paravirt: Provide a way to check for hypervisors
   93231925335a x86/paravirt: Dont patch flush_tlb_single
   3e9cf8fb4db0 x86/entry/64: Make cpu_entry_area.tss read-only
   47cb726a9600 x86/entry: Clean up the SYSENTER_stack code
   ff29cda6c2f2 x86/entry/64: Remove the SYSENTER stack canary
   33e8a0a90105 x86/entry/64: Move the IST stacks into struct cpu_entry_area
   8aa71a5cdc32 x86/entry/64: Create a per-CPU SYSCALL entry trampoline
   077a04534cc4 x86/entry/64: Return to userspace from the trampoline stack
   698892158210 x86/entry/64: Use a per-CPU trampoline stack for IDT entries
   7df5dc38dc29 x86/espfix/64: Stop assuming that pt_regs is on the entry stack
   7b6d319e2616 x86/entry/64: Separate cpu_current_top_of_stack from TSS.sp0
   e75df8aedce8 x86/entry: Remap the TSS into the CPU entry area
   0e0055bbeb2a x86/entry: Move SYSENTER_stack to the beginning of struct tss_struct
   d9e17c57f62a x86/dumpstack: Handle stack overflow on all stacks
   b6645c3c626e x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
   99a47d22f1fa x86/kasan/64: Teach KASAN about the cpu_entry_area
   0863f76db090 x86/mm/fixmap: Generalize the GDT fixmap mechanism, introduce struct cpu_entry_area
   3b825a015513 x86/entry/gdt: Put per-CPU GDT remaps in ascending order
   8e905774d607 x86/dumpstack: Add get_stack_info() support for the SYSENTER stack
   ca02a72c9150 x86/entry/64: Allocate and enable the SYSENTER stack
   4eec07ec7a5c x86/irq/64: Print the offending IP in the stack overflow warning
   a7b282cd43ba x86/irq: Remove an old outdated comment about context tracking races
   d2408cf269d1 x86/entry/64/paravirt: Use paravirt-safe macro to access eflags
   6a99c031df60 x86/mm/kasan: Don't use vmemmap_populate() to initialize shadow
   b3f96767d068 locking/barriers: Convert users of lockless_dereference() to READ_ONCE()
   c1763d787577 locking/barriers: Add implicit smp_read_barrier_depends() to READ_ONCE()
   756428416ce0 perf/x86: Enable free running PEBS for REGS_USER/INTR
   2eecb0acd97a x86: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD
   493513aefcc5 x86/cpufeature: Add User-Mode Instruction Prevention definitions
   019141d42ebe drivers/misc/intel/pti: Rename the header file to free up the namespace
   871d6926064c x86/xen: Fix xen head ELF annotations
   d20c9ba72b8f x86/boot: Annotate verify_cpu() as a callable function
   d32d0f94a7ee x86/head: Fix head ELF function annotations
   18f077dfae1c x86/head: Remove unused 'bad_address' code
   d5d921a047b9 x86/head: Remove confusing comment
   f6dd6567d09d kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal()
   cf2791ad9e53 kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals
   2071cfd700f6 kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL
   806424fd3065 kvm, mm: account kvm related kmem slabs to kmemcg
   9575a6ffb4b7 x86/virt: Add enum for hypervisors to replace x86_hyper
   e8baad3e5158 x86/virt, x86/platform: Merge 'struct x86_hyper' into 'struct x86_platform' and 'struct x86_init'
   cb995fcf5ae2 x86/mm/64: Rename the register_page_bootmem_memmap() 'size' parameter to 'nr_pages'
   c94b6dded6eb x86/xen: Drop 5-level paging support code from the XEN_PV code
   119347a0ef41 x86/xen: Provide pre-built page tables only for CONFIG_XEN_PV=y and CONFIG_XEN_PVH=y
   199e4741c8b9 x86/kasan: Use the same shadow offset for 4- and 5-level paging
   1c5ea732a936 mm/sparsemem: Allocate mem_section at runtime for CONFIG_SPARSEMEM_EXTREME=y
   8915a13ca5a4 mm, x86/mm: Fix performance regression in get_user_pages_fast()
   66ea32e385a8 x86/insn-eval: Add a utility function to get register offsets
   7ce86fc1e901 x86/insn-eval: Do not BUG on invalid register type
   c958c84cf7c2 x86/mpx, x86/insn: Relocate insn util functions to a new insn-eval file
   8d8f073eaa31 x86/mpx: Do not use SIB.base if its value is 101b and ModRM.mod = 0
   ec1786527e7f x86/mpx: Do not use SIB.index if its value is 100b and ModRM.mod is not 11b
   897aeabaf3c1 x86/mpx: Use signed variables to compute effective addresses
   bdc345828604 x86/mpx: Simplify handling of errors when computing linear addresses
   d35dbe818a6a ptrace,x86: Make user_64bit_mode() available to 32-bit builds
   ef02e49ac1a7 x86/boot: Relocate definition of the initial state of CR0
   1542a015ace2 x86/mm: Relocate page fault error codes to traps.h
   7edfe87940e2 selftests/x86/ldt_gdt: Run most existing LDT test cases against the GDT as well
   be33b76702d9 selftests/x86/ldt_gdt: Add infrastructure to test set_thread_area()
   738b110511ba selftests/x86/ldt_gdt: Robustify against set_thread_area() and LAR oddities
   1f9e12c2e81e x86/cpufeatures: Fix various details in the feature definitions
   14fe162f996f x86/cpufeatures: Re-tabulate the X86_FEATURE definitions
   be9780fb7a30 x86/build: Beautify build log of syscall headers
   601a71aa8028 x86/mm: Define _PAGE_TABLE using _KERNPG_TABLE
   6a9dda277c24 bitops: Revert cbe96375025e ("bitops: Add clear/set_bit32() to linux/bitops.h")
   c3e13e28aa72 x86/cpuid: Replace set/clear_bit32()
   a87fa3721441 x86/cpufeatures: Enable new SSE/AVX/AVX512 CPU features
   8bf58a744e9a x86/cpuid: Prevent out of bound access in do_clear_cpu_cap()
   5dd037e50e83 x86/fpu: Remove the explicit clearing of XSAVE dependent features
   691bb62c5c87 x86/fpu: Make XSAVE check the base CPUID features before enabling
   384a2d7af44d x86/fpu: Parse clearcpuid= as early XSAVE argument
   36381d76b645 x86/cpuid: Add generic table for CPUID dependencies
   50c6c061f4d6 bitops: Add clear/set_bit32() to linux/bitops.h
   4ef351ff7bab x86/fpu/debug: Remove unused 'x86_fpu_state' and 'x86_fpu_deactivate_state' tracepoints
   cc2b5786a84b x86/entry/64: Shorten TEST instructions
   d26fc8d39309 x86/traps: Use a new on_thread_stack() helper to clean up an assertion
   f475d79e9115 x86/entry/64: Remove thread_struct::sp0
   ee2f1a81b613 x86/entry/32: Fix cpu_current_top_of_stack initialization at boot
   a69652f6e628 x86/entry/64: Remove all remaining direct thread_struct::sp0 reads
   f7945199711d x86/entry/64: Stop initializing TSS.sp0 at boot
   3476ab68a9bf x86/xen/64, x86/entry/64: Clean up SP code in cpu_initialize_context()
   c2e6ce4b2921 x86/entry: Add task_top_of_stack() to find the top of a task's stack
   45c4053bf8d4 x86/entry/64: Pass SP0 directly to load_sp0()
   1acf96028d04 x86/entry/32: Pull the MSR_IA32_SYSENTER_CS update code out of native_load_sp0()
   ab80fe6f16d3 x86/entry/64: De-Xen-ify our NMI code
   d067fb259523 xen, x86/entry/64: Add xen NMI trap entry
   13ead6fcd2ab x86/entry/64: Remove the RESTORE_..._REGS infrastructure
   6793d49993e4 x86/entry/64: Use POP instead of MOV to restore regs on NMI return
   ba46462c7964 x86/entry/64: Merge the fast and slow SYSRET paths
   905d20dd5054 x86/entry/64: Use pop instead of movq in syscall_return_via_sysret
   99bc33079304 x86/entry/64: Shrink paranoid_exit_restore and make labels local
   3c16e0932979 x86/entry/64: Simplify reg restore code in the standard IRET paths
   4fc1d8b76f21 x86/entry/64: Move SWAPGS into the common IRET-to-usermode path
   f32123527bed x86/entry/64: Split the IRET-to-user and IRET-to-kernel paths
   3b475309f976 x86/entry/64: Remove the restore_c_regs_and_iret label
   f3bd88849f88 x86/asm: Don't use the confusing '.ifeq' directive
   d36e0d395ca2 x86/entry: Use SYSCALL_DEFINE() macros for sys_modify_ldt()
   ca024e7d1862 x86/asm: Remove unnecessary \n\t in front of CC_SET() from asm templates
   dcc5f2f8c5db x86/mm/64: Remove the last VM_BUG_ON() from the TLB code
   c01d65a2df94 x86/mm: Flush more aggressively in lazy TLB mode
   71570531a921 x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs
   7896047cb4de x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier
   557c6cb2e892 x86/mm/64: Stop using CR3.PCID == 0 in ASID-aware code
   bdf06611e863 x86/mm: Factor out CR3-building code
   28dfb0cf1cd6 x86/mm/64: Initialize CR4.PCIDE early
   c45360a1779f x86/mm: Get rid of VM_BUG_ON in switch_tlb_irqs_off()
   50522881fb0b x86/mm: Document how CR4.PCIDE restore works
   d8fa770e4331 x86/mm: Reinitialize TLB state on hotplug and resume
   223590ce02fa x86/xen: Get rid of paravirt op adjust_exception_frame
   9148019af215 x86/mm, mm/hwpoison: Clear PRESENT bit for kernel 1:1 mappings of poison pages
   93753465c1fb x86/mm/dump_pagetables: Speed up page tables dump for CONFIG_KASAN=y
   866ec7bd5055 x86/mm: Implement PCID based optimization: try to preserve old TLB entries using PCID
   0ca4a0dcd2b1 x86/mpx: Do not allow MPX if we have mappings above 47-bit
   69fa7265508d x86/mm/dump_pagetables: Fix printout of p4d level
   172774bfa3ef x86/boot: Add early cmdline parsing for options with arguments
   47c915550f9e x86/mm: Enable CR4.PCIDE on supported systems
   4bda31395beb x86/mm: Add the 'nopcid' boot option to turn off PCID
   ae3c78546a4d x86/mm: Disable PCID on 32-bit kernels
   a506eb1a28ee x86/mm: Stop calling leave_mm() in idle code
   8d640d568fc8 x86/mm: Rework lazy TLB mode and TLB freshness tracking
   6856a6907443 x86/mm: Track the TLB's tlb_gen and update the flushing algorithm
   75309cc8a392 x86/mm: Give each mm TLB flush generation a unique ID
   90d8521ed090 x86/xen/64: Rearrange the SYSCALL entries
   cd77afb4a51a x86/asm: Add suffix macro for GEN_*_RMWcc()
   5d4c36800831 x86/entry/64: Refactor IRQ stacks and make them NMI-safe
   9b1ff5eeadc1 irq: Make the irqentry text section unconditional
   2df8e4dd8ad5 x86: provide an init_mem_mapping hypervisor hook
   03a415bbc469 x86/kasan: don't allocate extra shadow memory
   e5881507ab4b x86/mm: Delete a big outdated comment about TLB flushing
   2612885620dc x86/mm: Don't reenter flush_tlb_func_common()
   8c33de3d1431 x86/mm: Remove reset_lazy_tlbstate()
   22e8e068200a x86/ldt: Simplify the LDT switching logic
   306b70104b69 x86/boot/64: Put __startup_64() into .head.text
   6785f222adc3 x86/mm: Add support for 5-level paging for KASLR
   3591558ac071 x86/mm: Make kernel_physical_mapping_init() support 5-level paging
   e93998d5a995 x86/mm: Add sync_global_pgds() for configuration with 5-level paging
   8d08f0f9511a x86/boot/64: Add support of additional page table level during early boot
   08ef52fc8c27 x86/boot/64: Rename init_level4_pgt and early_level4_pgt
   8e3d8cc05bab x86/boot/64: Rewrite startup_64() in C
   40029728da7c x86/boot/compressed: Enable 5-level paging during decompression stage
   9f9cc4499abe x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations
   f56c74bc479b x86/asm: Fix comment in return_from_SYSCALL_64()
   37edb519e13e x86/mm: Split read_cr3() into read_cr3_pa() and __read_cr3()
   ae39e66a6c22 x86/ldt: Rename ldt_struct::size to ::nr_entries
   8e9fceb46493 mm/vmstat: Make NR_TLB_REMOTE_FLUSH_RECEIVED available even on UP
   73c1f133b39a x86/mm, KVM: Teach KVM's VMX code that CR3 isn't a constant
   6652b39ab9a7 x86/mm: Be more consistent wrt PAGE_SHIFT vs PAGE_SIZE in tlb flush code
   5f8577a5dfcb x86/mm: Rework lazy TLB to track the actual loaded mm
   0444036bd674 x86/mm: Remove the UP asm/tlbflush.h code, always use the (formerly) SMP code
   a8c7f8a7a0b3 x86/mm: Use new merged flush logic in arch_tlbbatch_flush()
   d47f84368847 x86/mm: Refactor flush_tlb_mm_range() to merge local and remote cases
   5a32e49af880 x86/mm: Change the leave_mm() condition for local TLB flushes
   c2c97859bbc5 x86/mm: Pass flush_tlb_info to flush_tlb_others() etc
   30210c7c83b5 mm, x86/mm: Make the batched unmap TLB flush API more generic
   a56dacbe25a0 x86/mm: Reduce indentation in flush_tlb_func()
   4e69fbba04b0 x86/mm: Reimplement flush_tlb_page() using flush_tlb_mm_range()

(From OE-Core rev: 6a13b0c1e78a671563252a59351d7c1061664087)

Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-kernel/linux/linux-yocto-rt_4.12.bb

@@ -11,13 +11,13 @@ python () {
         raise bb.parse.SkipRecipe("Set PREFERRED_PROVIDER_virtual/kernel to linux-yocto-rt to enable it")
 }
 
-SRCREV_machine ?= "21541338928449e6131e73bfd529f5214027d918"
-SRCREV_meta ?= "7986844d9de597218a23f82e68b01e5bf060d576"
+SRCREV_machine ?= "8bade20d734f0b5e6ed13414b96cecaabe0c8039"
+SRCREV_meta ?= "19d815d5a34bfaad95d87cc097cef18b594daac8"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto-4.12.git;branch=${KBRANCH};name=machine \
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.12;destsuffix=${KMETA}"
 
-LINUX_VERSION ?= "4.12.19"
+LINUX_VERSION ?= "4.12.20"
 
 PV = "${LINUX_VERSION}+git${SRCPV}"
 

meta/recipes-kernel/linux/linux-yocto-tiny_4.12.bb

@@ -4,13 +4,13 @@ KCONFIG_MODE = "--allnoconfig"
 
 require recipes-kernel/linux/linux-yocto.inc
 
-LINUX_VERSION ?= "4.12.19"
+LINUX_VERSION ?= "4.12.20"
 
 KMETA = "kernel-meta"
 KCONF_BSP_AUDIT_LEVEL = "2"
 
-SRCREV_machine ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_meta ?= "7986844d9de597218a23f82e68b01e5bf060d576"
+SRCREV_machine ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_meta ?= "19d815d5a34bfaad95d87cc097cef18b594daac8"
 
 PV = "${LINUX_VERSION}+git${SRCPV}"
 

meta/recipes-kernel/linux/linux-yocto_4.12.bb

@@ -11,20 +11,20 @@ KBRANCH_qemux86  ?= "standard/base"
 KBRANCH_qemux86-64 ?= "standard/base"
 KBRANCH_qemumips64 ?= "standard/mti-malta64"
 
-SRCREV_machine_qemuarm ?= "77d25f21501511f01eb3df3c58dd8cf10a90adce"
-SRCREV_machine_qemuarm64 ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_machine_qemumips ?= "567ea03f6c5844bed62957b20747b4315851e3c3"
-SRCREV_machine_qemuppc ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_machine_qemux86 ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_machine_qemux86-64 ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_machine_qemumips64 ?= "4796b8299a405d1428f000cc4a2e8800a3670541"
-SRCREV_machine ?= "4b7a5c1b4ec5536806942340755bcfbf6f3584d9"
-SRCREV_meta ?= "7986844d9de597218a23f82e68b01e5bf060d576"
+SRCREV_machine_qemuarm ?= "9728502c1fc96a1348ff06e1be8df75bee168032"
+SRCREV_machine_qemuarm64 ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_machine_qemumips ?= "b04e654320e56fa42e477698dbf61d99f0bb4501"
+SRCREV_machine_qemuppc ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_machine_qemux86 ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_machine_qemux86-64 ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_machine_qemumips64 ?= "7a297c3848d02c46acd40e3d2f285c7905f8134c"
+SRCREV_machine ?= "1c4ad569af3e23a77994235435040e322908687f"
+SRCREV_meta ?= "19d815d5a34bfaad95d87cc097cef18b594daac8"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto-4.12.git;name=machine;branch=${KBRANCH}; \
            git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-4.12;destsuffix=${KMETA}"
 
-LINUX_VERSION ?= "4.12.19"
+LINUX_VERSION ?= "4.12.20"
 
 PV = "${LINUX_VERSION}+git${SRCPV}"