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linux/arch/arm64/kernel
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Will Deacon be04a6d112 arm64: use RET instruction for exiting the trampoline 
Speculation attacks against the entry trampoline can potentially resteer
the speculative instruction stream through the indirect branch and into
arbitrary gadgets within the kernel.

This patch defends against these attacks by forcing a misprediction
through the return stack: a dummy BL instruction loads an entry into
the stack, so that the predicted program flow of the subsequent RET
instruction is to a branch-to-self instruction which is finally resolved
as a branch to the kernel vectors with speculation suppressed.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-01-08 18:43:31 +00:00
..
probes
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vdso
arm64 updates for 4.15
2017-11-15 10:56:56 -08:00
.gitignore
arm64: Build infrastructure
2012-09-17 13:42:21 +01:00
acpi_numa.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
acpi_parking_protocol.c
arm64: fix endianness annotation in acpi_parking_protocol.c
2017-06-29 11:33:15 +01:00
acpi.c
ACPI / boot: Correct address space of __acpi_map_table()
2017-07-24 22:47:56 +02:00
alternative.c
arm64: fix endianness annotation for __apply_alternatives()/get_alt_insn()
2017-06-29 16:32:43 +01:00
arm64ksyms.c
arm64: switch to RAW_COPY_USER
2017-03-28 18:23:24 -04:00
armv8_deprecated.c
arm64 updates for 4.15
2017-11-15 10:56:56 -08:00
asm-offsets.c
arm64: mm: Map entry trampoline into trampoline and kernel page tables
2017-12-11 13:40:50 +00:00
cacheinfo.c
arm64: cacheinfo: Remove CCSIDR-based cache information probing
2017-03-20 16:16:54 +00:00
cpu_errata.c
arm64: Add workaround for Cavium Thunder erratum 30115
2017-06-15 09:45:04 +01:00
cpu_ops.c
arm64: cpu_ops: Add missing 'const' qualifiers
2017-12-01 13:05:08 +00:00
cpu-reset.h
arm64: Use __pa_symbol for kernel symbols
2017-01-12 15:05:39 +00:00
cpu-reset.S
arm64: Add back cpu reset routines
2016-06-27 16:31:25 +01:00
cpufeature.c
arm64: v8.4: Support for new floating point multiplication instructions
2018-01-05 11:29:48 +00:00
cpuidle.c
ARM64 / cpuidle: Use new cpuidle macro for entering retention state
2018-01-02 13:50:34 +00:00
cpuinfo.c
arm64: v8.4: Support for new floating point multiplication instructions
2018-01-05 11:29:48 +00:00
crash_dump.c
arm64: kdump: provide /proc/vmcore file
2017-04-05 18:31:38 +01:00
debug-monitors.c
arm64: introduce an order for exceptions
2017-11-02 15:55:41 +00:00
efi-entry.S
arm64: efi-entry.S: avoid open-coded adr_l
2017-01-17 17:41:14 +00:00
efi-header.S
arm64: efi: split Image code and data into separate PE/COFF sections
2017-04-04 17:50:59 +01:00
efi.c
efi/arm: Enable DMI/SMBIOS
2017-06-05 17:50:44 +02:00
entry32.S
arm64: entry32: remove pointless register assignment
2015-07-10 16:47:13 +01:00
entry-fpsimd.S
arm64/sve: Low-level SVE architectural state manipulation functions
2017-11-03 15:24:14 +00:00
entry-ftrace.S
arm64: Fix static use of function graph
2017-11-03 12:05:23 +00:00
entry.S
arm64: use RET instruction for exiting the trampoline
2018-01-08 18:43:31 +00:00
fpsimd.c
arm64/sve: Avoid dereference of dead task_struct in KVM guest entry
2017-12-06 19:08:05 +00:00
ftrace.c
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-01 13:04:59 +00:00
head.S
arm64: allow ID map to be extended to 52 bits
2017-12-22 17:37:33 +00:00
hibernate-asm.S
arm64: handle 52-bit addresses in TTBR
2017-12-22 17:35:21 +00:00
hibernate.c
arm64: don't open code page table entry creation
2017-12-22 17:36:34 +00:00
hw_breakpoint.c
arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
2017-05-09 17:26:40 +01:00
hyp-stub.S
arm64: hyp-stub: Zero x0 on successful stub handling
2017-04-09 07:49:35 -07:00
image.h
arm64 updates for 4.7:
2016-05-16 17:17:24 -07:00
insn.c
arm64 updates for 4.13:
2017-07-05 17:09:27 -07:00
io.c
arm64: Avoid aligning normal memory pointers in __memcpy_{to,from}io
2017-10-24 16:23:07 +01:00
irq.c
arm64: add basic VMAP_STACK support
2017-08-15 18:36:04 +01:00
jump_label.c
jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}
2015-08-03 11:34:12 +02:00
kaslr.c
arm64: kaslr: Adjust the offset to avoid Image across alignment boundary
2017-08-22 18:15:42 +01:00
kgdb.c
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h>
2017-03-02 08:42:36 +01:00
kuser32.S
arm64: Add __NR_* definitions for compat syscalls
2014-07-10 11:02:40 +01:00
machine_kexec.c
arm64: explicitly mask all exceptions
2017-11-02 15:55:40 +00:00
Makefile
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-01 13:04:59 +00:00
module-plts.c
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-01 13:04:59 +00:00
module.c
arm64: fix endianness annotation for reloc_insn_movw() & reloc_insn_imm()
2017-06-29 11:09:39 +01:00
module.lds
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-01 13:04:59 +00:00
paravirt.c
arm64: introduce CONFIG_PARAVIRT, PARAVIRT_TIME_ACCOUNTING and pv_time_ops
2015-12-21 14:40:54 +00:00
pci.c
PCI: Add a generic weak pcibios_align_resource()
2017-08-02 14:53:16 -05:00
perf_callchain.c
arm64: unwind: remove sp from struct stackframe
2017-08-09 14:10:29 +01:00
perf_event.c
arm64: perf: remove unsupported events for Cortex-A73
2017-12-01 13:05:08 +00:00
perf_regs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process.c
arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks
2017-12-11 13:41:03 +00:00
psci.c
arm64: Use __pa_symbol for kernel symbols
2017-01-12 15:05:39 +00:00
ptrace.c
arm64/sve: ptrace and ELF coredump support
2017-11-03 15:24:18 +00:00
reloc_test_core.c
arm64: relocation testing module
2017-04-04 17:03:32 +01:00
reloc_test_syms.S
arm64: relocation testing module
2017-04-04 17:03:32 +01:00
relocate_kernel.S
arm64: Introduce raw_{d,i}cache_line_size
2016-09-09 15:03:29 +01:00
return_address.c
arm64: unwind: remove sp from struct stackframe
2017-08-09 14:10:29 +01:00
setup.c
arm64: Move the async/fiq helpers to explicitly set process context flags
2017-11-02 15:55:41 +00:00
signal32.c
arm64/sve: Signal handling support
2017-11-03 15:24:16 +00:00
signal.c
arm64/sve: Signal handling support
2017-11-03 15:24:16 +00:00
sleep.S
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smccc-call.S
firmware: qcom: scm: Fix interrupted SCM calls
2017-02-03 18:46:33 +00:00
smp_spin_table.c
arm64: Use __pa_symbol for kernel symbols
2017-01-12 15:05:39 +00:00
smp.c
arm64: Move the async/fiq helpers to explicitly set process context flags
2017-11-02 15:55:41 +00:00
stacktrace.c
arm64: stacktrace: avoid listing stacktrace functions in stacktrace
2017-09-13 18:53:16 -07:00
suspend.c
arm64 updates for 4.15
2017-11-15 10:56:56 -08:00
sys32.c
arm64: fix implementation of mmap2 compat syscall
2015-03-19 10:43:51 +00:00
sys_compat.c
sched/headers: Prepare for the reduction of <linux/sched.h>'s signal API dependency
2017-03-02 08:42:37 +01:00
sys.c
arm64: compat: Check for AArch32 state
2016-04-20 12:22:42 +01:00
time.c
arm64: unwind: remove sp from struct stackframe
2017-08-09 14:10:29 +01:00
topology.c
arm64: Convert to using %pOF instead of full_name
2017-07-20 10:28:41 +01:00
trace-events-emulation.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
traps.c
arm64 updates for 4.15
2017-11-15 10:56:56 -08:00
vdso.c
arm64/vdso: Support mremap() for vDSO
2017-08-09 12:16:28 +01:00
vmlinux.lds.S
arm64: kaslr: Put kernel vectors address in separate data page
2017-12-11 13:41:20 +00:00