linux/kernel
Steven Rostedt (VMware) 2860cd8a23 livepatch: Use the default ftrace_ops instead of REGS when ARGS is available
When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS is available, the ftrace call
will be able to set the ip of the calling function. This will improve the
performance of live kernel patching where it does not need all the regs to
be stored just to change the instruction pointer.

If all archs that support live kernel patching also support
HAVE_DYNAMIC_FTRACE_WITH_ARGS, then the architecture specific function
klp_arch_set_pc() could be made generic.

It is possible that an arch can support HAVE_DYNAMIC_FTRACE_WITH_ARGS but
not HAVE_DYNAMIC_FTRACE_WITH_REGS and then have access to live patching.

Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: live-patching@vger.kernel.org
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Miroslav Benes <mbenes@suse.cz>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-11-13 12:15:28 -05:00
..
bpf Fixes for 5.10-rc1 from the networking tree: 2020-10-23 12:05:49 -07:00
cgroup kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
configs
debug kdb: Fix pager search for multi-line strings 2020-10-01 14:44:08 +01:00
dma dma-mapping: move more functions to dma-map-ops.h 2020-10-20 10:41:07 +02:00
entry arch-cleanup-2020-10-22 2020-10-23 10:06:38 -07:00
events task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
gcov gcov: add support for GCC 10.1 2020-09-11 09:33:54 -07:00
irq task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
kcsan kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
livepatch livepatch: Use the default ftrace_ops instead of REGS when ARGS is available 2020-11-13 12:15:28 -05:00
locking A couple of locking fixes: 2020-11-01 11:08:17 -08:00
power PM: sleep: fix typo in kernel/power/process.c 2020-10-27 19:11:44 +01:00
printk printk: ringbuffer: Replace zero-length array with flexible-array member 2020-10-30 16:57:42 -05:00
rcu stop_machine, rcu: Mark functions as notrace 2020-10-26 12:12:27 +01:00
sched cpufreq: schedutil: Always call driver if CPUFREQ_NEED_UPDATE_LIMITS is set 2020-10-29 14:12:18 +01:00
time time: Prevent undefined behaviour in timespec64_to_ns() 2020-10-26 11:48:11 +01:00
trace ftrace/x86: Allow for arguments to be passed in to ftrace_regs by default 2020-11-13 12:14:59 -05:00
.gitignore
acct.c kernel: acct.c: fix some kernel-doc nits 2020-10-16 11:11:19 -07:00
async.c
audit_fsnotify.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c LSM: Signal to SafeSetID when setting group IDs 2020-10-13 09:17:34 -07:00
compat.c
configs.c
context_tracking.c
cpu_pm.c
cpu.c
crash_core.c
crash_dump.c
cred.c
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c pid: move pidfd_get_pid() to pid.c 2020-10-18 09:27:10 -07:00
extable.c
fail_function.c
fork.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
freezer.c
futex.c A couple of locking fixes: 2020-11-01 11:08:17 -08:00
gen_kheaders.sh
groups.c LSM: Signal to SafeSetID when setting group IDs 2020-10-13 09:17:34 -07:00
hung_task.c
iomem.c
irq_work.c
jump_label.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
kallsyms.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c
kexec_core.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
kexec_elf.c
kexec_file.c kernel/resource: move and rename IORESOURCE_MEM_DRIVER_MANAGED 2020-10-16 11:11:18 -07:00
kexec_internal.h
kexec.c LSM: Introduce kernel_post_load_data() hook 2020-10-05 13:37:03 +02:00
kheaders.c
kmod.c
kprobes.c kprobes: Tell lockdep about kprobe nesting 2020-11-04 09:46:06 -05:00
ksysfs.c
kthread.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
latencytop.c
Makefile Kbuild updates for v5.10 2020-10-22 13:13:57 -07:00
module_signature.c
module_signing.c
module-internal.h
module.c Modules updates for v5.10 2020-10-22 13:08:57 -07:00
notifier.c
nsproxy.c
padata.c padata: fix possible padata_works_lock deadlock 2020-09-04 17:51:55 +10:00
panic.c panic: dump registers on panic_on_warn 2020-10-16 11:11:22 -07:00
params.c params: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
pid_namespace.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
pid.c pid: move pidfd_get_pid() to pid.c 2020-10-18 09:27:10 -07:00
profile.c
ptrace.c
range.c kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
reboot.c
regset.c
relay.c kernel/relay.c: drop unneeded initialization 2020-10-16 11:11:22 -07:00
resource.c kernel/resource: make iomem_resource implicit in release_mem_region_adjustable() 2020-10-16 11:11:18 -07:00
rseq.c
scftorture.c
scs.c
seccomp.c seccomp: Make duplicate listener detection non-racy 2020-10-08 13:17:47 -07:00
signal.c
smp.c Merge tag 'core-rcu-2020-10-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-10-18 14:34:50 -07:00
smpboot.c
smpboot.h
softirq.c softirq: Add debug check to __raise_softirq_irqoff() 2020-09-16 15:18:56 +02:00
stackleak.c stackleak: let stack_erasing_sysctl take a kernel pointer buffer 2020-09-19 13:13:39 -07:00
stacktrace.c stacktrace: Remove reliable argument from arch_stack_walk() callback 2020-09-18 14:24:16 +01:00
static_call.c static_call: Fix return type of static_call_init 2020-10-02 21:18:25 +02:00
stop_machine.c stop_machine, rcu: Mark functions as notrace 2020-10-26 12:12:27 +01:00
sys_ni.c mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
sys.c kernel/sys.c: fix prototype of prctl_get_tid_address() 2020-10-25 11:44:16 -07:00
sysctl-test.c
sysctl.c mm: allow a controlled amount of unfairness in the page lock 2020-09-17 10:26:41 -07:00
task_work.c task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
taskstats.c taskstats: move specifying netlink policy back to ops 2020-10-02 19:11:12 -07:00
test_kprobes.c
torture.c
tracepoint.c tracepoint: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
tsacct.c
ucount.c
uid16.c
uid16.h
umh.c usermodehelper: reset umask to default before executing user process 2020-10-06 10:31:52 -07:00
up.c
user_namespace.c kernel/: fix repeated words in comments 2020-10-16 11:11:19 -07:00
user-return-notifier.c
user.c
usermode_driver.c
utsname_sysctl.c
utsname.c
watch_queue.c
watchdog_hld.c
watchdog.c
workqueue_internal.h
workqueue.c workqueue: fix a kernel-doc warning 2020-10-16 07:28:20 +02:00