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Marc Zyngier e21da1c992 arm64: Relax ARM_SMCCC_ARCH_WORKAROUND_1 discovery 
A recent update to the ARM SMCCC ARCH_WORKAROUND_1 specification
allows firmware to return a non zero, positive value to describe
that although the mitigation is implemented at the higher exception
level, the CPU on which the call is made is not affected.

Let's relax the check on the return value from ARCH_WORKAROUND_1
so that we only error out if the returned value is negative.

Fixes: b092201e0020 ("arm64: Add ARM_SMCCC_ARCH_WORKAROUND_1 BP hardening support")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2018-03-09 17:52:07 +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
…
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
More ACPI updates for v4.16-rc1
2018-02-09 09:44:25 -08:00
alternative.c
arm64: alternatives: use tpidr_el2 on VHE hosts
2018-01-13 10:44:33 +00:00
arm64ksyms.c
arm64: uaccess: Mask __user pointers for __arch_{clear, copy_*}_user
2018-02-06 22:53:40 +00:00
armv8_deprecated.c
arm64: uaccess: Formalise types for access_ok()
2018-02-19 13:59:58 +00:00
asm-offsets.c
KVM: arm64: Handle RAS SErrors from EL2 on guest exit
2018-01-16 15:09:36 +00:00
bpi.S
arm64: Kill PSCI_GET_VERSION as a variant-2 workaround
2018-02-06 22:54:18 +00:00
cacheinfo.c
arm64: cacheinfo: Remove CCSIDR-based cache information probing
2017-03-20 16:16:54 +00:00
cpu_errata.c
arm64: Relax ARM_SMCCC_ARCH_WORKAROUND_1 discovery
2018-03-09 17:52:07 +00:00
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: idmap: Use "awx" flags for .idmap.text .pushsection directives
2018-02-06 22:53:27 +00:00
cpufeature.c
arm64: cpufeature: Fix CTR_EL0 field definitions
2018-02-19 17:02:09 +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
signal: Don't use structure initializers for struct siginfo
2018-01-22 19:07:08 -06:00
efi-entry.S
arm64: Add software workaround for Falkor erratum 1041
2018-02-06 22:53:13 +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
arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
2018-02-16 18:13:57 +00:00
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
2nd set of arm64 updates for 4.16:
2018-02-08 10:44:25 -08:00
fpsimd.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-01-30 14:18:52 -08:00
ftrace.c
arm64: ftrace: emit ftrace-mod.o contents through code
2017-12-01 13:04:59 +00:00
head.S
arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives
2018-02-06 22:53:27 +00:00
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: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
2018-02-16 18:13:57 +00:00
hw_breakpoint.c
arm64: hw_breakpoint: Use linux/uaccess.h instead of asm/uaccess.h
2017-12-12 11:53:26 +00:00
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 vmap_stack header file
2018-01-13 10:45:03 +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
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: kernel: Add arch-specific SDEI entry code and CPU masking
2018-01-13 10:45:17 +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: correct PMUVer probing
2018-02-20 11:34:54 +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: __show_regs: Only resolve kernel symbols when running at EL1
2018-02-19 17:07:12 +00:00
psci.c
arm64: Use __pa_symbol for kernel symbols
2017-01-12 15:05:39 +00:00
ptrace.c
treewide/trivial: Remove ';;$' typo noise
2018-02-22 10:59:33 +01:00
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: Add software workaround for Falkor erratum 1041
2018-02-06 22:53:13 +00:00
return_address.c
arm64: unwind: remove sp from struct stackframe
2017-08-09 14:10:29 +01:00
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
signal32.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2018-01-30 14:18:52 -08:00
signal.c
arm64: fpsimd: Fix state leakage when migrating after sigreturn
2018-01-16 14:39:50 +00:00
sleep.S
arm64: idmap: Use "awx" flags for .idmap.text .pushsection directives
2018-02-06 22:53:27 +00:00
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: kernel: Add arch-specific SDEI entry code and CPU masking
2018-01-13 10:45:17 +00:00
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: uaccess: Add PAN helper
2018-01-13 10:45:10 +00:00
sys32.c
arm64: fix implementation of mmap2 compat syscall
2015-03-19 10:43:51 +00:00
sys_compat.c
arm64: uaccess: Formalise types for access_ok()
2018-02-19 13:59:58 +00:00
sys.c
arm64: compat: Check for AArch32 state
2016-04-20 12:22:42 +01:00
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: Use of_cpu_node_to_id helper for CPU topology parsing
2018-01-02 16:43:12 +00:00
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: Remove unimplemented syscall log message
2018-02-19 17:05:53 +00:00
vdso.c
arm64/vdso: Support mremap() for vDSO
2017-08-09 12:16:28 +01:00
vmlinux.lds.S
arm64: Extend early page table code to allow for larger kernels
2018-01-14 18:49:52 +00:00