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072f0a6338
linux/arch/arm64/kernel
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Suzuki K Poulose 072f0a6338 arm64: Introduce raw_{d,i}cache_line_size 
On systems with mismatched i/d cache min line sizes, we need to use
the smallest size possible across all CPUs. This will be done by fetching
the system wide safe value from CPU feature infrastructure.
However the some special users(e.g kexec, hibernate) would need the line
size on the CPU (rather than the system wide), when either the system
wide feature may not be accessible or it is guranteed that the caller
executes with a gurantee of no migration.
Provide another helper which will fetch cache line size on the current CPU.

Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: James Morse <james.morse@arm.com>
Reviewed-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-09-09 15:03:29 +01:00
..
probes arm64: Create sections.h 2016-08-25 18:00:29 +01:00
vdso arm64: Add support for CLOCK_MONOTONIC_RAW in clock_gettime() vDSO 2016-07-12 16:06:32 +01:00
.gitignore
acpi_numa.c arm64/numa: avoid inconsistent information to be printed 2016-09-09 14:59:08 +01:00
acpi_parking_protocol.c
acpi.c arm64: acpi: add acpi=on cmdline option to prefer ACPI boot over DT 2016-04-26 14:37:41 +01:00
alternative.c arm64: alternative: Add support for patching adrp instructions 2016-09-09 15:03:28 +01:00
arm64ksyms.c Merge branch 'for-next/kprobes' into for-next/core 2016-07-21 18:20:41 +01:00
armv8_deprecated.c Merge branch 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-07-29 13:55:30 -07:00
asm-offsets.c arm64 updates for 4.8: 2016-07-27 11:16:05 -07:00
cacheinfo.c arm64: simplify sysreg manipulation 2016-09-09 11:43:50 +01:00
cpu_errata.c arm64: Use consistent naming for errata handling 2016-09-09 15:03:28 +01:00
cpu_ops.c arm64: apply __ro_after_init to some objects 2016-08-22 12:32:29 +01:00
cpu-reset.h arm64: Add back cpu reset routines 2016-06-27 16:31:25 +01:00
cpu-reset.S arm64: Add back cpu reset routines 2016-06-27 16:31:25 +01:00
cpufeature.c arm64: Rearrange CPU errata workaround checks 2016-09-09 15:03:28 +01:00
cpuidle.c arm64: add support for ACPI Low Power Idle(LPI) 2016-07-21 23:29:38 +02:00
cpuinfo.c arm64: Rearrange CPU errata workaround checks 2016-09-09 15:03:28 +01:00
debug-monitors.c arm64: simplify sysreg manipulation 2016-09-09 11:43:50 +01:00
efi-entry.S arm64: move early boot code to the .init segment 2016-04-14 18:11:30 +01:00
efi.c arm64: efi: avoid block mappings for unaligned UEFI memory regions 2016-07-01 11:56:26 +01:00
entry32.S
entry-fpsimd.S
entry-ftrace.S
entry.S arm64: kernel: do not need to reset UAO on exception entry 2016-09-01 20:22:47 +01:00
fpsimd.c
ftrace.c
head.S arm64: head.S: document the use of callee saved registers 2016-09-02 11:47:51 +01:00
hibernate-asm.S arm64: Introduce raw_{d,i}cache_line_size 2016-09-09 15:03:29 +01:00
hibernate.c Revert "arm64: hibernate: Refuse to hibernate if the boot cpu is offline" 2016-08-26 11:21:25 +01:00
hw_breakpoint.c arm64: hw_breakpoint: convert CPU hotplug notifier to new infrastructure 2016-09-01 13:45:51 +01:00
hyp-stub.S arm64: Add back cpu reset routines 2016-06-27 16:31:25 +01:00
image.h arm64 updates for 4.7: 2016-05-16 17:17:24 -07:00
insn.c arm64: insn: Add helpers for adrp offsets 2016-09-09 15:03:28 +01:00
io.c
irq.c
jump_label.c
kaslr.c arm64: apply __ro_after_init to some objects 2016-08-22 12:32:29 +01:00
kgdb.c arm64: Blacklist non-kprobe-able symbol 2016-07-19 15:03:20 +01:00
kuser32.S
machine_kexec.c arm64/kexec: Add pr_debug output 2016-06-27 16:31:26 +01:00
Makefile arm64: Set UTS_MACHINE in the Makefile 2016-08-31 12:31:38 +01:00
module-plts.c
module.c
module.lds
paravirt.c
pci.c Merge branch 'pci/resource' into next 2016-08-01 12:23:44 -05:00
perf_callchain.c perf core: Add a 'nr' field to perf_event_callchain_context 2016-05-16 23:11:51 -03:00
perf_event.c arm64: perf: move to common attr_group fields 2016-09-09 14:51:51 +01:00
perf_regs.c
process.c arm64: simplify sysreg manipulation 2016-09-09 11:43:50 +01:00
psci.c
ptrace.c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2016-07-29 17:38:46 -07:00
relocate_kernel.S arm64: Introduce raw_{d,i}cache_line_size 2016-09-09 15:03:29 +01:00
return_address.c
setup.c arm64: Set UTS_MACHINE in the Makefile 2016-08-31 12:31:38 +01:00
signal32.c
signal.c arm64: factor work_pending state machine to C 2016-08-22 10:00:48 +01:00
sleep.S arm64: kernel: re-export _cpu_resume() from sleep.S 2016-09-05 10:24:55 +01:00
smccc-call.S
smp_spin_table.c arm64: vmlinux.ld: Add mmuoff data sections and move mmuoff text into idmap 2016-08-25 18:00:30 +01:00
smp.c arm64: Rearrange CPU errata workaround checks 2016-09-09 15:03:28 +01:00
stacktrace.c arm64: ftrace: add save_stack_trace_regs() 2016-09-05 13:41:52 +01:00
suspend.c arm64: hw_breakpoint: convert CPU hotplug notifier to new infrastructure 2016-09-01 13:45:51 +01:00
sys32.c
sys_compat.c arm64: simplify sysreg manipulation 2016-09-09 11:43:50 +01:00
sys.c arm64: compat: Check for AArch32 state 2016-04-20 12:22:42 +01:00
time.c
topology.c
trace-events-emulation.h
traps.c arm64: trap userspace "dc cvau" cache operation on errata-affected core 2016-07-01 11:46:00 +01:00
vdso.c arm64: apply __ro_after_init to some objects 2016-08-22 12:32:29 +01:00
vmlinux.lds.S arm64: vmlinux.ld: Add mmuoff data sections and move mmuoff text into idmap 2016-08-25 18:00:30 +01:00