linux-yocto/4.12: update to v4.12.21
Integrating Paul Gortmaker's stable update to 4.12, this includes CVE
fixes for meltdown and spectre:
3bb926457832 Linux 4.12.21
76781f72ce64 lguest: disable it vs. removing it.
6ab3176bb365 x86/speculation: Fix typo IBRS_ATT, which should be IBRS_ALL
efa97ecdf026 x86/pti: Mark constant arrays as __initconst
a4d9aaf35e28 x86/spectre: Simplify spectre_v2 command line parsing
1dbde4da259a x86/retpoline: Avoid retpolines for built-in __init functions
7f3a7b69b0f7 x86/paravirt: Remove 'noreplace-paravirt' cmdline option
ebeddfbee13f x86/speculation: Use Indirect Branch Prediction Barrier in context switch
7e0a7c84eb35 x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel
bf0c4c3f38f6 x86/spectre: Fix spelling mistake: "vunerable"-> "vulnerable"
f4d4ccfdf361 x86/spectre: Report get_user mitigation for spectre_v1
12f20abacd8b nl80211: Sanitize array index in parse_txq_params
7686c72bfd9c vfs, fdtable: Prevent bounds-check bypass via speculative execution
a3d62741fc9b x86/syscall: Sanitize syscall table de-references under speculation
0b99c598274c x86/get_user: Use pointer masking to limit speculation
bf532304a22f x86/uaccess: Use __uaccess_begin_nospec() and uaccess_try_nospec
04584b001618 x86/usercopy: Replace open coded stac/clac with __uaccess_{begin, end}
5a64c3ccd99d x86: Introduce __uaccess_begin_nospec() and uaccess_try_nospec
9bbc24f34f03 x86: Introduce barrier_nospec
b55fd06d6fe0 x86: Implement array_index_mask_nospec
79a2efa3e0f5 array_index_nospec: Sanitize speculative array de-references
e9046d054bb9 Documentation: Document array_index_nospec
0078d6b103f9 x86/asm: Move 'status' from thread_struct to thread_info
46afe23798a3 x86/entry/64: Push extra regs right away
4213246ab7a8 x86/entry/64: Remove the SYSCALL64 fast path
026a59b9de37 x86/spectre: Check CONFIG_RETPOLINE in command line parser
a345c5f7a1b6 x86/mm: Fix overlap of i386 CPU_ENTRY_AREA with FIX_BTMAP
999e3eca6861 x86/speculation: Simplify indirect_branch_prediction_barrier()
c7acab78a24c x86/retpoline: Simplify vmexit_fill_RSB()
be5c3f1101f7 x86/cpufeatures: Clean up Spectre v2 related CPUID flags
7addf309d0e0 x86/cpu/bugs: Make retpoline module warning conditional
b7c17f71e9cc x86/bugs: Drop one "mitigation" from dmesg
af16629cc1da x86/nospec: Fix header guards names
ebfadec0c9dc x86/alternative: Print unadorned pointers
2e4bcf1ccaa9 x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support
332de1ac4373 x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes
79a2a1ba23e7 x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown
d29069565618 x86/msr: Add definitions for new speculation control MSRs
114a7b0f431c x86/cpufeatures: Add AMD feature bits for Speculation Control
2d5755e9daac x86/cpufeatures: Add Intel feature bits for Speculation Control
3f5d9b428f05 x86/cpufeatures: Add CPUID_7_EDX CPUID leaf
2f1b883356ca module/retpoline: Warn about missing retpoline in module
8c935f65cf6a KVM: VMX: Make indirect call speculation safe
79c0d980e610 KVM: x86: Make indirect calls in emulator speculation safe
956ca31407ab x86/retpoline: Remove the esp/rsp thunk
de8cd92003c6 x86/mm/64: Fix vmapped stack syncing on very-large-memory 4-level systems
f2846896cd75 x86/microcode: Fix again accessing initrd after having been freed
badb7498ab69 x86/retpoline: Optimize inline assembler for vmexit_fill_RSB
750d9c97cede x86/pti: Document fix wrong index
8d759c94307d kprobes/x86: Disable optimizing on the function jumps to indirect thunk
59a3c4dc0ab9 kprobes/x86: Blacklist indirect thunk functions for kprobes
2eef7eab7aea retpoline: Introduce start/end markers of indirect thunk
a37c55916910 x86/mce: Make machine check speculation protected
3aab76cd9d88 x86/tsc: Fix erroneous TSC rate on Skylake Xeon
b129f5955cd5 x86/tsc: Future-proof native_calibrate_tsc()
7639b8268579 x86/mm/pkeys: Fix fill_sig_info_pkey
b19a92bb0f18 x86/cpufeature: Move processor tracing out of scattered features
eb5a1177e60b x86/retpoline: Add LFENCE to the retpoline/RSB filling RSB macros
ed114eb7be88 x86/retpoline: Fill RSB on context switch for affected CPUs
70d519c9f97c x86/kasan: Panic if there is not enough memory to boot
01e21b5f7c9c x86/retpoline: Remove compile time warning
8ca1b5f8a9f4 x86,perf: Disable intel_bts when PTI
6f037d7eaeaa security/Kconfig: Correct the Documentation reference for PTI
b8c74586d251 x86/pti: Fix !PCID and sanitize defines
8e24a4722756 selftests/x86: Add test_vsyscall
c3d9420f23cf x86/retpoline: Fill return stack buffer on vmexit
dd182d455654 x86/retpoline/irq32: Convert assembler indirect jumps
d592a8a2c5f5 x86/retpoline/checksum32: Convert assembler indirect jumps
0f3df59f16d3 x86/retpoline/xen: Convert Xen hypercall indirect jumps
c0459b479a22 x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
11edfaeadbd1 x86/retpoline/entry: Convert entry assembler indirect jumps
bf4c91a3b74f x86/retpoline/crypto: Convert crypto assembler indirect jumps
2b243b8623a5 x86/spectre: Add boot time option to select Spectre v2 mitigation
8ab0d792e81c x86/retpoline: Add initial retpoline support
f2f4c0853dba x86/pti: Make unpoison of pgd for trusted boot work for real
7495fd5400e6 x86/alternatives: Fix optimize_nops() checking
8b932f131e26 sysfs/cpu: Fix typos in vulnerability documentation
299b4adfed2e x86/cpu/AMD: Use LFENCE_RDTSC in preference to MFENCE_RDTSC
32996f3a0a81 x86/cpu/AMD: Make LFENCE a serializing instruction
10ffc3c2b2f7 x86/mm/pti: Remove dead logic in pti_user_pagetable_walk*()
9e1201731d4b x86/tboot: Unbreak tboot with PTI enabled
728d879e5c6b x86/cpu: Implement CPU vulnerabilites sysfs functions
aeba317a23de sysfs/cpu: Add vulnerability folder
83e59b5d52bf x86/cpufeatures: Add X86_BUG_SPECTRE_V[12]
f7845c2cbd6e x86/Documentation: Add PTI description
16331e2c3b06 x86/pti: Unbreak EFI old_memmap
5723b0260415 kdump: Write the correct address of mem_section into vmcoreinfo
50d02826dfc0 mm/sparse.c: wrong allocation for mem_section
d3cbfb481af2 mm/sparsemem: Fix ARM64 boot crash when CONFIG_SPARSEMEM_EXTREME=y
Signed-off-by: Bruce Ashfield <bruce.ashfield@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
