Will Deacon 139dbe5d8e arm64: syscall: Expand the comment about ptrace and syscall(-1) ... If a task executes syscall(-1), we intercept this early and force x0 to be -ENOSYS so that we don't need to distinguish this scenario from one where the scno is -1 because a tracer wants to skip the system call using ptrace. With the return value set, the return path is the same as the skip case. Although there is a one-line comment noting this in el0_svc_common(), it misses out most of the detail. Expand the comment to describe a bit more about what is going on. Cc: Mark Rutland <mark.rutland@arm.com> Cc: Keno Fischer <keno@juliacomputing.com> Cc: Luis Machado <luis.machado@linaro.org> Signed-off-by: Will Deacon <will@kernel.org>		2020-07-16 11:41:58 +01:00
..
probes
vdso	arm64: vdso: Don't use gcc plugins for building vgettimeofday.c	2020-06-24 14:04:44 +01:00
vdso32	arm64: compat: Remove 32-bit sigreturn code from the vDSO	2020-06-23 14:56:39 +01:00
.gitignore
acpi_numa.c
acpi_parking_protocol.c
acpi.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
alternative.c	arm64/alternatives: don't patch up internal branches	2020-07-09 14:57:59 +01:00
armv8_deprecated.c
asm-offsets.c	ARM:	2020-06-03 15:13:47 -07:00
cacheinfo.c
cpu_errata.c	arm64: Add missing sentinel to erratum_1463225	2020-07-09 09:42:24 +01:00
cpu_ops.c
cpu-reset.h
cpu-reset.S
cpufeature.c	arm64: Add KRYO4XX silver CPU cores to erratum list 1530923 and 1024718	2020-07-03 16:39:16 +01:00
cpuidle.c
cpuinfo.c
crash_core.c
crash_dump.c
debug-monitors.c	arm64: ptrace: Override SPSR.SS when single-stepping is enabled	2020-07-16 11:41:21 +01:00
efi-entry.S	arm64 updates for 5.8	2020-06-01 15:18:27 -07:00
efi-header.S	arm64 updates for 5.8	2020-06-01 15:18:27 -07:00
efi-rt-wrapper.S
efi.c
entry-common.c	arm64: entry: Fix the typo in the comment of el1_dbg()	2020-07-08 21:44:40 +01:00
entry-fpsimd.S
entry-ftrace.S
entry.S	arm64: entry: Tidy up block comments and label numbers	2020-07-08 22:13:33 +01:00
fpsimd.c	arm64: sve: Fix build failure when ARM64_SVE=y and SYSCTL=n	2020-06-16 18:29:11 +01:00
ftrace.c	arm64: ftrace: Change CONFIG_FTRACE_WITH_REGS to CONFIG_DYNAMIC_FTRACE_WITH_REGS	2020-06-08 15:44:59 +01:00
head.S	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
hibernate-asm.S
hibernate.c	mm: consolidate pte_index() and pte_offset_*() definitions	2020-06-09 09:39:14 -07:00
hw_breakpoint.c	arm64: hw_breakpoint: Don't invoke overflow handler on uaccess watchpoints	2020-06-18 11:10:00 +01:00
hyp-stub.S
image-vars.h
image.h
insn.c
io.c
irq.c
jump_label.c
kaslr.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
kexec_image.c
kgdb.c	arm64: kgdb: Fix single-step exception handling oops	2020-07-08 22:18:54 +01:00
kuser32.S
machine_kexec_file.c	arm64: kexec_file: Use struct_size() in kmalloc()	2020-06-18 10:45:20 +01:00
machine_kexec.c
Makefile	arm64: compat: Allow 32-bit vdso and sigpage to co-exist	2020-06-23 14:47:03 +01:00
module-plts.c
module.c
module.lds
paravirt.c
pci.c
perf_callchain.c
perf_event.c
perf_regs.c	arm64: perf: Report the PC value in REGS_ABI_32 mode	2020-06-25 14:47:04 +01:00
pointer_auth.c
process.c	arm64: add loglvl to dump_backtrace()	2020-06-09 09:39:11 -07:00
psci.c
ptrace.c	arm64: ptrace: Add a comment describing our syscall entry/exit trap ABI	2020-07-16 11:41:41 +01:00
reloc_test_core.c
reloc_test_syms.S
relocate_kernel.S
return_address.c
scs.c
sdei.c	arm64 updates for 5.8	2020-06-01 15:18:27 -07:00
setup.c	arm64: warn on incorrect placement of the kernel by the bootloader	2020-06-11 14:13:13 +01:00
signal32.c	arm64: compat: Always use sigpage for sigreturn trampoline	2020-06-23 14:56:24 +01:00
signal.c	arm64: ptrace: Consistently use pseudo-singlestep exceptions	2020-07-16 11:41:07 +01:00
sigreturn32.S
sleep.S
smccc-call.S
smp_spin_table.c
smp.c	mm: don't include asm/pgtable.h if linux/mm.h is already included	2020-06-09 09:39:13 -07:00
ssbd.c
stacktrace.c
suspend.c	mm: reorder includes after introduction of linux/pgtable.h	2020-06-09 09:39:13 -07:00
sys32.c
sys_compat.c
sys.c
syscall.c	arm64: syscall: Expand the comment about ptrace and syscall(-1)	2020-07-16 11:41:58 +01:00
time.c
topology.c
trace-events-emulation.h
traps.c	arm64: traps: Dump registers prior to panic() in bad_mode()	2020-06-15 16:58:13 +01:00
vdso.c	arm64: compat: Allow 32-bit vdso and sigpage to co-exist	2020-06-23 14:47:03 +01:00
vmlinux.lds.S	arm64/alternatives: use subsections for replacement sequences	2020-07-02 12:57:17 +01:00