Lorenzo Pieralisi f436b2ac90 arm64: kernel: fix architected PMU registers unconditional access ... The Performance Monitors extension is an optional feature of the AArch64 architecture, therefore, in order to access Performance Monitors registers safely, the kernel should detect the architected PMU unit presence through the ID_AA64DFR0_EL1 register PMUVer field before accessing them. This patch implements a guard by reading the ID_AA64DFR0_EL1 register PMUVer field to detect the architected PMU presence and prevent accessing PMU system registers if the Performance Monitors extension is not implemented in the core. Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: <stable@vger.kernel.org> Fixes: 60792ad349 ("arm64: kernel: enforce pmuserenr_el0 initialization and restore") Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reported-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Will Deacon <will.deacon@arm.com>		2016-01-25 11:09:06 +00:00
..
vdso	arm64: build vdso without libgcov	2015-11-12 15:18:07 +00:00
.gitignore	arm64: Build infrastructure	2012-09-17 13:42:21 +01:00
acpi.c	Power management and ACPI updates for v4.4-rc1	2015-11-04 18:10:13 -08:00
alternative.c	arm64: mm: fold alternatives into .init	2015-12-10 17:36:08 +00:00
arm64ksyms.c	ARM: 8480/2: arm64: add implementation for arm-smccc	2016-01-04 16:24:45 +00:00
armv8_deprecated.c	arm64: add __init/__initdata section marker to some functions/variables	2015-12-02 12:17:11 +00:00
asm-offsets.c	* s390: Support for runtime instrumentation within guests,	2016-01-12 13:22:12 -08:00
cacheinfo.c	arm64: kernel: add support for cpu cache information	2015-01-15 11:55:07 +00:00
cpu_errata.c	arm64: KVM: Add workaround for Cortex-A57 erratum 834220	2015-11-24 17:58:14 +01:00
cpu_ops.c	arm64: force CONFIG_SMP=y and remove redundant #ifdefs	2015-07-27 11:08:40 +01:00
cpufeature.c	arm64: add __init/__initdata section marker to some functions/variables	2015-12-02 12:17:11 +00:00
cpuidle.c	arm64: cpuidle: add __init section marker to arm_cpuidle_init	2015-07-02 17:44:27 +01:00
cpuinfo.c	arm64: restore bogomips information in /proc/cpuinfo	2015-11-19 17:57:18 +00:00
debug-monitors.c	driver core update for 4.4-rc1	2015-11-04 21:50:37 -08:00
efi-entry.S	arm64/efi: isolate EFI stub from the kernel proper	2015-10-12 16:20:12 +01:00
efi.c	arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM	2015-12-09 16:57:23 +00:00
entry32.S	arm64: entry32: remove pointless register assignment	2015-07-10 16:47:13 +01:00
entry-fpsimd.S	arm64: fpsimd: fix a typo in fpsimd_save_partial_state ENDPROC	2014-07-31 11:42:42 +01:00
entry-ftrace.S	arm64: ftrace: fix function_graph tracer panic	2015-10-02 11:12:56 +01:00
entry.S	arm64: entry: remove pointless SPSR mode check	2016-01-06 15:40:38 +00:00
fpsimd.c	arm64: add __init/__initdata section marker to some functions/variables	2015-12-02 12:17:11 +00:00
ftrace.c	arm64: ftrace: modify a stack frame in a safe way	2015-12-21 17:26:01 +00:00
head.S	arm64: kernel: fix architected PMU registers unconditional access	2016-01-25 11:09:06 +00:00
hw_breakpoint.c	arm64: Fix missing #include in hw_breakpoint.c	2015-10-12 12:10:53 +01:00
hyp-stub.S	irqchip: gic-v3: Initial support for GICv3	2014-07-08 22:11:47 +00:00
image.h	arm64: hide __efistub_ aliases from kallsyms	2016-01-25 11:09:04 +00:00
insn.c	arm64: insn: remove BUG_ON from codegen	2016-01-17 19:15:26 -05:00
io.c	arm64: optimize memcpy_{from,to}io() and memset_io()	2014-11-06 17:25:27 +00:00
irq.c	arm64: remove irq_count and do_softirq_own_stack()	2015-12-21 17:26:01 +00:00
jump_label.c	jump_label: Rename JUMP_LABEL_{EN,DIS}ABLE to JUMP_LABEL_{JMP,NOP}	2015-08-03 11:34:12 +02:00
kgdb.c	arm64/debug: Simplify BRK insn opcode declarations	2015-07-27 11:08:42 +01:00
kuser32.S	arm64: Add __NR_* definitions for compat syscalls	2014-07-10 11:02:40 +01:00
Makefile	xen: features and fixes for 4.5-rc0	2016-01-12 13:05:36 -08:00
module.c	arm64: module: avoid undefined shift behavior in reloc_data()	2016-01-05 11:27:20 +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	ARM64: PCI: do not enable resources on PROBE_ONLY systems	2015-07-30 20:17:07 +01:00
perf_callchain.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
perf_event.c	arm64: perf: add support for Cortex-A72	2015-12-22 14:45:35 +00:00
perf_regs.c	perf: Move task_pt_regs sampling into arch code	2015-01-09 11:12:28 +01:00
process.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
psci.c	drivers: firmware: psci: move power_state handling to generic code	2015-10-02 14:35:16 +01:00
ptrace.c	arm64: Clear out any singlestep state on a ptrace detach operation	2015-12-07 17:48:21 +00:00
return_address.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
setup.c	arm64 updates for 4.4:	2015-11-04 14:47:13 -08:00
signal32.c	arm64: compat: fix vfp save/restore across signal handlers in big-endian	2015-09-17 11:57:03 +01:00
signal.c	arm64: Removed unused variable	2015-04-13 20:40:10 +02:00
sleep.S	arm64: Store struct thread_info in sp_el0	2015-12-08 11:40:48 +00:00
smccc-call.S	ARM: 8480/2: arm64: add implementation for arm-smccc	2016-01-04 16:24:45 +00:00
smp_spin_table.c	ARM64: kernel: make cpu_ops hooks DT agnostic	2015-05-19 16:09:29 +01:00
smp.c	arm64: smp: make of_parse_and_init_cpus static	2015-11-12 15:18:14 +00:00
stacktrace.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
suspend.c	arm64: kernel: pause/unpause function graph tracer in cpu_suspend()	2015-11-17 17:11:45 +00:00
sys32.c	arm64: fix implementation of mmap2 compat syscall	2015-03-19 10:43:51 +00:00
sys_compat.c	arm64: compat: align cacheflush syscall with arch/arm	2014-12-01 13:31:12 +00:00
sys.c	arm64: make sys_call_table const	2015-01-27 09:38:08 +00:00
time.c	arm64: ftrace: fix a stack tracer's output under function graph tracer	2015-12-21 17:26:02 +00:00
topology.c	arm64: kernel: remove non-legit DT warnings when booting using ACPI	2015-07-27 11:08:41 +01:00
trace-events-emulation.h	arm64: Trace emulation of AArch32 legacy instructions	2014-11-20 16:35:02 +00:00
traps.c	arm64: traps: address fallout from printk -> pr_* conversion	2015-12-21 17:26:02 +00:00
vdso.c	arm64: VDSO: fix coarse clock monotonicity regression	2015-08-10 15:37:45 +01:00
vmlinux.lds.S	arm64 updates for 4.5:	2016-01-12 12:23:33 -08:00