AcoSail/kernel_optimize_test
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kernel_optimize_test/arch/arm64/kernel
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Will Deacon 429388682d arm64: Avoid flush_icache_range() in alternatives patching code 
The implementation of flush_icache_range() includes instruction sequences
which are themselves patched at runtime, so it is not safe to call from
the patching framework.

This patch reworks the alternatives cache-flushing code so that it rolls
its own internal D-cache maintenance using DC CIVAC before invalidating
the entire I-cache after all alternatives have been applied at boot.
Modules don't cause any issues, since flush_icache_range() is safe to
call by the time they are loaded.

Acked-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Rohit Khanna <rokhanna@nvidia.com>
Cc: Alexander Van Brunt <avanbrunt@nvidia.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-06-27 18:21:53 +01:00
..
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
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
acpi.c More ACPI updates for v4.16-rc1 2018-02-09 09:44:25 -08:00
alternative.c arm64: Avoid flush_icache_range() in alternatives patching code 2018-06-27 18:21:53 +01:00
arm64ksyms.c arm64: export tishift functions to modules 2018-05-21 19:00:48 +01:00
armv8_deprecated.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
asm-offsets.c arm64: KVM: Handle guest's ARCH_WORKAROUND_2 requests 2018-05-31 18:00:57 +01:00
cacheinfo.c arm64: Add support for ACPI based firmware tables 2018-05-17 17:28:09 +01:00
cpu_errata.c arm64 updates for 4.18: 2018-06-08 11:10:58 -07:00
cpu_ops.c arm64: cpu_ops: Add missing 'const' qualifiers 2017-12-01 13:05:08 +00:00
cpu-reset.h
cpu-reset.S arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives 2018-02-06 22:53:27 +00:00
cpufeature.c arm64: kpti: Use early_param for kpti= command-line option 2018-06-22 17:23:26 +01:00
cpuidle.c ARM64 / cpuidle: Use new cpuidle macro for entering retention state 2018-01-02 13:50:34 +00:00
cpuinfo.c arm64: Expose Arm v8.4 features 2018-03-19 18:14:27 +00:00
crash_dump.c
debug-monitors.c arm64: Use arm64_force_sig_info instead of force_sig_info 2018-03-06 18:52:32 +00:00
efi-entry.S arm64: Add software workaround for Falkor erratum 1041 2018-02-06 22:53:13 +00:00
efi-header.S
efi-rt-wrapper.S efi/arm64: Check whether x18 is preserved by runtime services calls 2018-03-09 08:58:22 +01:00
efi.c efi/arm64: Check whether x18 is preserved by runtime services calls 2018-03-09 08:58:22 +01:00
entry-fpsimd.S arm64/sve: Write ZCR_EL1 on context switch only if changed 2018-05-17 18:19:53 +01:00
entry-ftrace.S arm64: Fix static use of function graph 2017-11-03 12:05:23 +00:00
entry.S arm64: ssbd: Introduce thread flag to control userspace mitigation 2018-05-31 17:35:32 +01:00
entry32.S
fpsimd.c Small update for KVM. 2018-06-12 11:34:04 -07:00
ftrace.c arm64: ftrace: emit ftrace-mod.o contents through code 2017-12-01 13:04:59 +00:00
head.S arm64/kvm: Prohibit guest LOR accesses 2018-02-26 10:48:01 +01:00
hibernate-asm.S arm64: assembler: Change order of macro arguments in phys_to_ttbr 2018-02-06 22:53:21 +00:00
hibernate.c arm64: ssbd: Restore mitigation status on CPU resume 2018-05-31 17:35:19 +01:00
hw_breakpoint.c compat: Move compat_timespec/ timeval to compat_time.h 2018-04-19 13:29:54 +02:00
hyp-stub.S
image.h arm64/efi: Make strrchr() available to the EFI namespace 2018-03-05 13:45:38 -06:00
insn.c arm64: insn: Allow ADD/SUB (immediate) with LSL #12 2018-03-19 13:05:13 +00:00
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 vmap_stack header file 2018-01-13 10:45:03 +00:00
jump_label.c
kaslr.c arm64/kernel: kaslr: reduce module randomization range to 4 GB 2018-03-08 13:49:26 +00:00
kgdb.c arm64/debug: Fix registers on sleeping tasks 2018-03-06 18:52:34 +00:00
kuser32.S
machine_kexec.c arm64: explicitly mask all exceptions 2017-11-02 15:55:40 +00:00
Makefile arm64: ssbd: Add prctl interface for per-thread mitigation 2018-05-31 18:00:52 +01:00
module-plts.c arm64/kernel: rename module_emit_adrp_veneer->module_emit_veneer_for_adrp 2018-04-24 19:07:35 +01:00
module.c arm64: Avoid flush_icache_range() in alternatives patching code 2018-06-27 18:21:53 +01:00
module.lds arm64: ftrace: emit ftrace-mod.o contents through code 2017-12-01 13:04:59 +00:00
paravirt.c
pci.c
perf_callchain.c
perf_event.c arm_pmu: simplify arm_pmu::handle_irq 2018-05-21 18:07:05 +01:00
perf_regs.c compat: Move compat_timespec/ timeval to compat_time.h 2018-04-19 13:29:54 +02:00
process.c Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables 2018-06-14 12:21:18 +09:00
psci.c
ptrace.c Small update for KVM. 2018-06-12 11:34:04 -07:00
reloc_test_core.c arm64: fix undefined reference to 'printk' 2018-03-19 18:14:25 +00:00
reloc_test_syms.S arm64: fix undefined reference to 'printk' 2018-03-19 18:14:25 +00:00
relocate_kernel.S arm64: Add software workaround for Falkor erratum 1041 2018-02-06 22:53:13 +00:00
return_address.c
sdei.c arm64: sdei: Add trampoline code for remapping the kernel 2018-01-14 18:49:50 +00:00
setup.c arm64: Move the async/fiq helpers to explicitly set process context flags 2017-11-02 15:55:41 +00:00
signal.c arm64: Fix syscall restarting around signal suppressed by tracer 2018-06-08 13:21:39 +01:00
signal32.c arm64: uaccess: Fix omissions from usercopy whitelist 2018-03-28 15:25:44 +01:00
sleep.S arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives 2018-02-06 22:53:27 +00:00
smccc-call.S
smp_spin_table.c
smp.c arm64: make secondary_start_kernel() notrace 2018-06-19 14:19:24 +01:00
ssbd.c arm64: ssbd: Add prctl interface for per-thread mitigation 2018-05-31 18:00:52 +01:00
stacktrace.c arm64: fix unwind_frame() for filtered out fn for function graph tracing 2018-02-23 13:46:38 +00:00
suspend.c arm64: ssbd: Restore mitigation status on CPU resume 2018-05-31 17:35:19 +01:00
sys_compat.c signal: Ensure every siginfo we send has all bits initialized 2018-04-25 10:40:51 -05:00
sys.c mm: add ksys_mmap_pgoff() helper; remove in-kernel calls to sys_mmap_pgoff() 2018-04-02 20:16:11 +02:00
sys32.c
time.c arm64: fix unwind_frame() for filtered out fn for function graph tracing 2018-02-23 13:46:38 +00:00
topology.c arm64: topology: Avoid checking numa mask for scheduler MC selection 2018-06-07 17:42:11 +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 Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2018-06-04 15:23:48 -07:00
vdso.c
vmlinux.lds.S arm64: remove no-op macro VMLINUX_SYMBOL() 2018-05-15 18:14:24 +01:00