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linux/arch/s390/kernel
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Alexander Gordeev 8d96bba75a s390/smp: enforce lowcore protection on CPU restart 
As result of commit 915fea04f932 ("s390/smp: enable DAT before
CPU restart callback is called") the low-address protection bit
gets mistakenly unset in control register 0 save area of the
absolute zero memory. That area is used when manual PSW restart
happened to hit an offline CPU. In this case the low-address
protection for that CPU will be dropped.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Fixes: 915fea04f932 ("s390/smp: enable DAT before CPU restart callback is called")
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2022-09-07 14:04:01 +02:00
..
syscalls
arch: syscalls: simplify uapi/kapi directory creation
2022-03-31 12:03:46 +09:00
vdso32
s390/vdso: remove -nostdlib compiler flag
2021-11-16 12:29:19 +01:00
vdso64
s390/vdso: filter out -mstack-guard and -mstack-size
2021-11-16 12:29:19 +01:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
alternative.c
s390/alternatives: remove padding generation code
2022-05-17 15:16:28 +02:00
asm-offsets.c
s390/stack: add union to reflect kvm stack slot usages
2022-06-01 12:03:17 +02:00
audit.c
audit: add support for the openat2 syscall
2021-10-01 16:52:48 -04:00
audit.h
…
cache.c
s390: raise minimum supported machine generation to z10
2022-03-10 15:58:17 +01:00
compat_audit.c
audit: add support for the openat2 syscall
2021-10-01 16:52:48 -04:00
compat_linux.c
s390: use generic UID16 implementation
2019-01-18 09:33:18 +01:00
compat_linux.h
s390/compat: cleanup compat_linux.h header file
2022-05-06 20:45:16 +02:00
compat_ptrace.h
…
compat_signal.c
s390/signal: fix typo in comments
2022-03-08 00:33:01 +01:00
cpcmd.c
s390/cpcmd: use physical address for command and response
2021-10-26 15:21:28 +02:00
cpufeature.c
s390/uvdevice: autoload module based on CPU facility
2022-07-19 16:18:49 +02:00
crash_dump.c
s390/crash: support multi-segment iterators
2022-07-20 17:21:41 +02:00
debug.c
s390/sclp: add tracing of SCLP interactions
2021-08-25 11:03:35 +02:00
diag.c
s390/extable: move EX_TABLE define to asm-extable.h
2022-03-08 00:33:00 +01:00
dis.c
s390/disassembler: update opcode table
2021-12-16 19:58:07 +01:00
dumpstack.c
exit: Add and use make_task_dead.
2021-12-13 12:04:45 -06:00
early_printk.c
s390/sclp: remove unused sclp_early_printk_forced
2020-09-21 08:08:44 +02:00
early.c
s390: simplify early program check handler
2022-05-25 11:46:02 +02:00
earlypgm.S
s390: generate register offsets into pt_regs automatically
2022-05-25 11:46:02 +02:00
ebcdic.c
s390: ebcdic: convert comments to UTF-8
2018-08-23 18:48:43 -07:00
entry.h
s390: simplify early program check handler
2022-05-25 11:46:02 +02:00
entry.S
s390/mcck: isolate SIE instruction when setting CIF_MCCK_GUEST flag
2022-06-01 12:03:16 +02:00
fpu.c
s390: convert to generic entry
2021-01-19 12:29:26 +01:00
ftrace.c
ftrace: Remove return value of ftrace_arch_modify_*()
2022-05-26 21:13:00 -04:00
ftrace.h
s390: raise minimum supported machine generation to z10
2022-03-10 15:58:17 +01:00
guarded_storage.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
2017-11-13 11:47:01 -08:00
head64.S
s390: remove invalid email address of Heiko Carstens
2022-02-06 23:31:29 +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/cio: remove unused include linux/spinlock.h from cio.h
2021-07-27 09:39:13 +02:00
ipl.c
Revert "s390/smp: rework absolute lowcore access"
2022-08-06 09:24:07 +02:00
irq.c
s390/irq: utilize RCU instead of irq_lock_sparse() in show_msi_interrupt()
2022-04-27 12:53:34 +02:00
jump_label.c
jump_label: make initial NOP patching the special case
2022-06-24 09:48:55 +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: enable kretprobes framepointer verification
2022-03-27 22:18:39 +02:00
lgr.c
s390/lgr: use simple assignment instead of memcpy
2022-02-06 23:31:29 +01:00
machine_kexec_file.c
kexec, KEYS, s390: Make use of built-in and secondary keyring for signature verification
2022-07-15 12:21:16 -04:00
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
Revert "s390/smp: rework absolute lowcore access"
2022-08-06 09:24:07 +02:00
Makefile
Revert "s390/smp: rework absolute lowcore access"
2022-08-06 09:24:07 +02:00
mcount.S
s390/kprobes: Avoid additional kprobe in kretprobe handling
2022-03-10 15:58:17 +01:00
module.c
jump_label: mips: move module NOP patching into arch code
2022-06-24 09:48:55 +02:00
nmi.c
s390/boot: fix absolute zero lowcore corruption on boot
2022-09-07 14:04:01 +02:00
nospec-branch.c
s390: raise minimum supported machine generation to z10
2022-03-10 15:58:17 +01:00
nospec-sysfs.c
s390: introduce nospec_uses_trampoline()
2021-10-26 15:21:29 +02:00
numa.c
drivers/base/node: consolidate node device subsystem initialization in node_dev_init()
2022-03-22 15:57:10 -07:00
os_info.c
Revert "s390/smp: rework absolute lowcore access"
2022-08-06 09:24:07 +02:00
perf_cpum_cf_common.c
s390/cpumf: Support for CPU Measurement Facility CSVN 7
2022-01-17 14:13:08 +01:00
perf_cpum_cf_events.c
s390/cpumf: add new extended counter set for IBM z16
2022-05-16 10:58:33 +02:00
perf_cpum_cf.c
s390/cpumf: Handle events cycles and instructions identical
2022-06-23 17:23:59 +02:00
perf_cpum_sf.c
s390/cpumf: Support for CPU Measurement Sampling Facility LS bit
2022-01-17 14:13:08 +01:00
perf_event.c
s390/stack: add union to reflect kvm stack slot usages
2022-06-01 12:03:17 +02:00
perf_pai_crypto.c
s390/pai: Fix multiple concurrent event installation
2022-06-23 17:24:00 +02:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
process.c
s390: fix double free of GS and RI CBs on fork() failure
2022-08-25 15:12:32 +02:00
processor.c
s390/cpufeature: rework to allow more than only hwcap bits
2022-07-19 16:18:49 +02:00
ptrace.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
reipl.S
s390: add missing ENDPROC statements to assembler functions
2019-05-02 13:54:11 +02:00
relocate_kernel.S
s390/kexec: set end-of-ipl flag in last diag308 call
2022-04-25 13:54:12 +02:00
runtime_instr.c
s390/runtime_instrumentation: fix storage key handling
2020-08-17 13:17:10 +02:00
setup.c
s390/smp: enforce lowcore protection on CPU restart
2022-09-07 14:04:01 +02:00
signal.c
ptrace: Cleanups for v5.18
2022-03-28 17:29:53 -07:00
smp.c
Revert "s390/smp: rework absolute lowcore access"
2022-08-06 09:24:07 +02:00
stacktrace.c
s390: remove invalid email address of Heiko Carstens
2022-02-06 23:31:29 +01:00
sthyi.c
s390/sthyi: use register pair instead of register asm
2021-06-18 16:41:22 +02:00
syscall.c
s390: add support for BEAR enhancement facility
2021-10-26 15:21:29 +02:00
sysinfo.c
s390/extable: move EX_TABLE define to asm-extable.h
2022-03-08 00:33:00 +01:00
text_amode31.S
s390/extable: move EX_TABLE define to asm-extable.h
2022-03-08 00:33:00 +01:00
time.c
s390/stp: clock_delta should be signed
2022-05-11 14:40:57 +02:00
topology.c
s390: remove invalid email address of Heiko Carstens
2022-02-06 23:31:29 +01:00
trace.c
s390/ftrace: fix potential crashes when switching tracers
2020-04-22 16:20:55 +02:00
traps.c
s390/traps: improve panic message for translation-specification exception
2022-03-27 22:18:38 +02:00
unwind_bc.c
s390/unwind: avoid duplicated unwinding entries for kretprobes
2022-03-27 22:18:39 +02:00
uprobes.c
s390: raise minimum supported machine generation to z10
2022-03-10 15:58:17 +01:00
uv.c
KVM: s390: pv: add export before import
2022-07-13 14:42:11 +00:00
vdso.c
s390/vdso: add vdso randomization
2022-04-25 13:54:15 +02:00
vmlinux.lds.S
s390: fix nospec table alignments
2022-08-30 21:57:07 +02:00
vtime.c
s390: assume stckf is always present
2022-03-10 15:58:17 +01:00