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779df22487
linux/arch/s390/kernel
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Sven Schnelle 779df22487 s390/vdso: add minimal compat vdso 
Add a small vdso for 31 bit compat application that provides
trampolines for calls to sigreturn,rt_sigreturn,syscall_restart.
This is requird for moving these syscalls away from the signal
frame to the vdso. Note that this patch effectively disables
CONFIG_COMPAT when using clang to compile the kernel. clang
doesn't support 31 bit mode.

We want to redirect sigreturn and restart_syscall to the vdso. However,
the kernel cannot parse the ELF vdso file, so we need to generate header
files which contain the offsets of the syscall instructions in the vdso
page.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2021-07-08 15:37:28 +02:00
..
syscalls quota: Wire up quotactl_fd syscall 2021-06-07 12:11:24 +02:00
vdso32 s390/vdso: add minimal compat vdso 2021-07-08 15:37:28 +02:00
vdso64 s390/vdso: add minimal compat vdso 2021-07-08 15:37:28 +02:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
alternative.c s390/facilities: move stfl information from lowcore to global data 2021-06-07 17:06:58 +02:00
asm-offsets.c s390/mcck: move register validation to C code 2021-07-05 12:44:23 +02:00
audit.c
audit.h
base.S s390: remove unused s390_base_ext_handler 2020-11-09 11:20:58 +01:00
cache.c
compat_audit.c
compat_linux.c s390: use generic UID16 implementation 2019-01-18 09:33:18 +01:00
compat_linux.h
compat_ptrace.h
compat_signal.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
cpcmd.c s390/cpcmd: use register pair instead of register asm 2021-06-18 16:41:22 +02:00
crash_dump.c elf_prstatus: collect the common part (everything before pr_reg) into a struct 2021-01-06 08:38:29 -05:00
debug.c s390/debug: Remove pointer obfuscation 2021-06-18 16:41:19 +02:00
diag.c s390/diag: use register pair instead of register asm 2021-06-18 16:41:21 +02:00
dis.c s390/disassembler: increase ebpf disasm buffer size 2021-04-21 12:32:12 +02:00
dumpstack.c s390/unwind: add machine check handler stack 2021-04-05 11:30:07 +02:00
early_printk.c s390/sclp: remove unused sclp_early_printk_forced 2020-09-21 08:08:44 +02:00
early.c s390/boot: replace magic string check with a bootdata flag 2021-07-05 12:44:23 +02:00
ebcdic.c s390: ebcdic: convert comments to UTF-8 2018-08-23 18:48:43 -07:00
entry.h s390/smp: fix do_restart() prototype 2021-04-18 21:32:02 +02:00
entry.S s390/mcck: move register validation to C code 2021-07-05 12:44:23 +02:00
fpu.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
ftrace.c Tracing updates for 5.11 2020-12-17 13:22:17 -08:00
guarded_storage.c
head64.S s390/early: rewrite program parameter setup in C 2020-11-09 11:21:00 +01:00
idle.c s390/time,idle: get rid of unsigned long long 2021-03-08 10:46:27 +01:00
ima_arch.c s390/kexec_file: Disable kexec_load when IPLed secure 2019-04-29 10:44:03 +02:00
ipl_vmparm.c s390/ipl: provide uapi header for list directed IPL 2019-04-26 12:34:05 +02:00
ipl.c s390 updates for the 5.14 merge window 2021-07-04 12:17:38 -07:00
irq.c s390: use struct tpi_info in lowcore.h 2021-06-07 17:07:01 +02:00
jump_label.c s390/jump_label: remove unused structure definition 2019-06-07 10:10:10 +02:00
kdebugfs.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
kexec_elf.c kexec: Fix file verification on S390 2019-09-10 13:27:51 +01:00
kexec_image.c kexec_file: split KEXEC_VERIFY_SIG into KEXEC_SIG and KEXEC_SIG_FORCE 2019-08-19 21:54:15 -07:00
kprobes_insn_page.S s390/kprobes: move insn_page to text segment 2020-10-09 23:45:30 +02:00
kprobes.c s390/kprobes: use is_kernel() helper 2021-07-05 12:44:23 +02:00
lgr.c s390: convert to msecs_to_jiffies() 2020-06-29 16:31:46 +02:00
machine_kexec_file.c s390/kexec_file: fix initrd location for kdump kernel 2020-05-14 23:21:37 +02:00
machine_kexec_reloc.c s390/kaslr: add support for R_390_JMP_SLOT relocation type 2020-05-20 10:13:27 +02:00
machine_kexec.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
Makefile s390/vdso: add minimal compat vdso 2021-07-08 15:37:28 +02:00
mcount.S s390/ftrace: assume -mhotpatch or -mrecord-mcount always available 2020-11-20 19:19:11 +01:00
module.c s390/module: Use s390_kernel_write() for late relocations 2020-05-08 00:12:43 +02:00
nmi.c s390/mcck: move register validation to C code 2021-07-05 12:44:23 +02:00
nospec-branch.c s390/speculation: Use statically initialized const for instructions 2021-06-28 11:18:28 +02:00
nospec-sysfs.c s390/facilities: move stfl information from lowcore to global data 2021-06-07 17:06:58 +02:00
numa.c s390/numa: move code to arch/s390/kernel 2020-08-11 18:16:55 +02:00
os_info.c s390/kernel: fix a typo 2021-03-22 11:36:05 +01:00
perf_cpum_cf_common.c s390/cpumf: Allow concurrent access for CPU Measurement Counter Facility 2021-07-05 12:44:23 +02:00
perf_cpum_cf_events.c s390/cpum_cf,perf: change DFLT_CCERROR counter name 2020-07-21 13:53:56 +02:00
perf_cpum_cf.c s390/cpumf: Allow concurrent access for CPU Measurement Counter Facility 2021-07-05 12:44:23 +02:00
perf_cpum_sf.c s390/time: convert tod_clock_base to union 2021-02-13 17:17:54 +01:00
perf_event.c s390: Get rid of oprofile leftovers 2021-04-22 13:32:39 +01:00
perf_regs.c perf/arch: Remove perf_sample_data::regs_user_copy 2020-11-09 18:12:34 +01:00
process.c sched: Introduce task_is_running() 2021-06-18 11:43:07 +02:00
processor.c s390/facilities: move stfl information from lowcore to global data 2021-06-07 17:06:58 +02:00
ptrace.c s390/traps: add struct to access transactional diagnostic block 2021-06-07 17:06:58 +02:00
reipl.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
relocate_kernel.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
runtime_instr.c s390/runtime_instrumentation: fix storage key handling 2020-08-17 13:17:10 +02:00
setup.c s390/setup: cleanup reserve/remove_oldmem 2021-06-18 16:41:19 +02:00
signal.c s390: fix system call restart with multiple signals 2021-06-21 11:19:18 +02:00
smp.c s390 updates for the 5.14 merge window 2021-07-04 12:17:38 -07:00
stacktrace.c stacktrace: Move documentation for arch_stack_walk_reliable() to header 2021-03-10 15:52:31 +01:00
sthyi.c s390/sthyi: use register pair instead of register asm 2021-06-18 16:41:22 +02:00
syscall.c s390/entry: use assignment to read intcode / asm to copy gprs 2021-06-07 17:06:58 +02:00
sysinfo.c s390/sysinfo: get rid of register asm 2021-06-18 16:41:23 +02:00
time.c s390/vdso: fix initializing and updating of vdso_data 2021-03-25 21:57:26 +01:00
topology.c s390/topology: clear thread/group maps for offline cpus 2021-06-21 11:19:18 +02:00
trace.c s390/ftrace: fix potential crashes when switching tracers 2020-04-22 16:20:55 +02:00
traps.c s390/traps: do not test MONITOR CALL without CONFIG_BUG 2021-07-08 15:37:27 +02:00
unwind_bc.c s390/unwind: stop gracefully at user mode pt_regs in irq stack 2019-12-18 23:29:26 +01:00
uprobes.c s390: convert to generic entry 2021-01-19 12:29:26 +01:00
uv.c s390: mm: Fix secure storage access exception handling 2021-07-05 12:44:23 +02:00
vdso.c s390/vdso: add minimal compat vdso 2021-07-08 15:37:28 +02:00
vmlinux.lds.S s390/mm: use invalid asce instead of kernel asce 2020-11-23 12:01:12 +01:00
vtime.c s390/vtime: fix increased steal time accounting 2021-03-15 19:09:25 +01:00