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2e83e0eb85
linux_dsm_epyc7002/arch/s390/kernel
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Vasily Gorbik 2e83e0eb85 s390: clean .bss before running uncompressed kernel 
Clean uncompressed kernel .bss section in the startup code before
the uncompressed kernel is executed. At this point of time initrd and
certificates have been already rescued. Uncompressed kernel .bss size
is known from vmlinux_info. It is also taken into consideration during
uncompressed kernel positioning by kaslr (so it is safe to clean it).

With that uncompressed kernel is starting with .bss section zeroed and
no .bss section usage restrictions apply. Which makes chkbss checks for
uncompressed kernel objects obsolete and they can be removed.

early_nobss.c is also not needed anymore. Parts of it which are still
relevant are moved to early.c. Kasan initialization code is now called
directly from head64 (early.c is instrumented and should not be
executed before kasan shadow memory is set up).

Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-08-21 12:58:52 +02:00
..
syscalls s390: wire up clone3 system call 2019-07-23 10:45:53 +02:00
vdso32 s390/vdso: drop unnecessary cc-ldoption 2019-05-03 17:17:58 +02:00
vdso64 s390/vdso: drop unnecessary cc-ldoption 2019-05-03 17:17:58 +02:00
.gitignore
alternative.c
asm-offsets.c s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +02:00
audit.c
audit.h
base.S s390: add missing ENDPROC statements to assembler functions 2019-05-02 13:54:11 +02:00
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 signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
cpcmd.c
crash_dump.c memblock: memblock_phys_alloc(): don't panic 2019-03-12 10:04:01 -07:00
debug.c docs: s390: unify and update s390dbf kdocs at debug.c 2019-07-05 13:42:22 +02:00
diag.c s390/kernel: introduce .dma sections 2019-04-29 10:47:10 +02:00
dis.c s390/disassembler: update opcode table 2019-06-04 15:03:58 +02:00
dumpstack.c s390: enforce CONFIG_SMP 2019-06-07 10:09:37 +02:00
early_printk.c
early.c s390: clean .bss before running uncompressed kernel 2019-08-21 12:58:52 +02:00
ebcdic.c
entry.h PM: hibernate: powerpc: Expose pfn_is_nosave() prototype 2019-06-14 10:48:56 +02:00
entry.S s390: enforce CONFIG_SMP 2019-06-07 10:09:37 +02:00
fpu.c s390: correct some inline assembly constraints 2019-04-17 10:40:57 +02:00
ftrace.c s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR 2019-05-02 13:54:11 +02:00
guarded_storage.c
head64.S s390: clean .bss before running uncompressed kernel 2019-08-21 12:58:52 +02:00
idle.c
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/ipl: Fix detection of has_secure attribute 2019-07-11 20:40:02 +02:00
irq.c s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +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 s390/kexec_file: Create ipl report and pass to next kernel 2019-04-29 10:44:02 +02:00
kexec_image.c s390/kexec_file: Create ipl report and pass to next kernel 2019-04-29 10:44:02 +02:00
kprobes.c s390/kernel: introduce .dma sections 2019-04-29 10:47:10 +02:00
lgr.c
machine_kexec_file.c s390/sclp: do not use static sccbs 2019-04-29 10:47:10 +02:00
machine_kexec_reloc.c s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
machine_kexec.c s390/kdump: get rid of compile warning 2019-06-11 09:48:39 +02:00
Makefile s390: clean .bss before running uncompressed kernel 2019-08-21 12:58:52 +02:00
mcount.S s390/ftrace: use HAVE_FUNCTION_GRAPH_RET_ADDR_PTR 2019-05-02 13:54:11 +02:00
module.c
nmi.c s390: simplify disabled_wait 2019-05-02 13:54:11 +02:00
nospec-branch.c s390 updates for the 5.2 merge window 2019-05-06 16:42:54 -07:00
nospec-sysfs.c s390: Convert IS_ENABLED uses to __is_defined 2019-04-11 13:36:53 +02:00
os_info.c
perf_cpum_cf_common.c s390/cpum_cf: move common functions into a separate file 2019-02-22 09:19:55 +01:00
perf_cpum_cf_diag.c s390/cpum_cf_diag: Add support for CPU-MF SVN 6 2019-04-23 16:30:06 +02:00
perf_cpum_cf_events.c s390/cpumf: Add extended counter set definitions for model 8561 and 8562 2019-07-11 20:40:01 +02:00
perf_cpum_cf.c s390/cpum_cf: Add support for CPU-MF SVN 6 2019-03-29 07:23:50 +01:00
perf_cpum_sf.c perf/aux: Make perf_event accessible to setup_aux() 2019-02-06 10:00:39 -03:00
perf_event.c s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +02:00
perf_regs.c
pgm_check.S s390/kernel: convert SYSCALL and PGM_CHECK handlers to .quad 2019-04-29 10:47:10 +02:00
process.c s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +02:00
processor.c processor: get rid of cpu_relax_yield 2019-06-15 12:25:55 +02:00
ptrace.c arch: mostly remove <asm/segment.h> 2019-04-23 21:51:40 +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
setup.c s390: move vmalloc option parsing to startup code 2019-08-21 12:41:43 +02:00
signal.c signal: Remove task parameter from force_sig 2019-05-27 09:36:28 -05:00
smp.c s390: improve wait logic of stop_machine 2019-06-15 12:25:52 +02:00
stacktrace.c s390 updates for the 5.2 merge window 2019-05-06 16:42:54 -07:00
sthyi.c
suspend.c
swsusp.S s390: enforce CONFIG_SMP 2019-06-07 10:09:37 +02:00
sys_s390.c s390: autogenerate compat syscall wrappers 2019-01-18 09:33:19 +01:00
sysinfo.c s390: no need to check return value of debugfs_create functions 2019-01-28 15:58:55 +01:00
time.c
topology.c proc/sysctl: add shared variables for range check 2019-07-18 17:08:07 -07:00
trace.c
traps.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
unwind_bc.c s390/unwind: avoid int overflow in outside_of_stack 2019-07-11 20:40:02 +02:00
uprobes.c
vdso.c s390: don't build vdso32 with clang 2019-04-11 13:36:49 +02:00
vmlinux.lds.S s390/kernel: build a relocatable kernel 2019-04-29 10:47:10 +02:00
vtime.c s390: correct some inline assembly constraints 2019-04-17 10:40:57 +02:00