Alexander GordeevandGreg Kroah-Hartman 66e2bf4b2c s390/mcck: isolate SIE instruction when setting CIF_MCCK_GUEST flag ...

[ Upstream commit 29ccaa4b35 ]

Commit d768bd892f ("s390: add options to change branch prediction
behaviour for the kernel") introduced .Lsie_exit label - supposedly
to fence off SIE instruction. However, the corresponding address
range length .Lsie_crit_mcck_length was not updated, which led to
BPON code potentionally marked with CIF_MCCK_GUEST flag.

Both .Lsie_exit and .Lsie_crit_mcck_length were removed with commit
0b0ed657fe ("s390: remove critical section cleanup from entry.S"),
but the issue persisted - currently BPOFF and BPENTER macros might
get wrongly considered by the machine check handler as a guest.

Fixes: d768bd892f ("s390: add options to change branch prediction behaviour for the kernel")
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-06-14 18:36:13 +02:00

..

syscalls

compat: remove some compat entry points

2021-09-08 15:32:35 -07:00

vdso32

Merge tag 's390-5.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2021-08-30 13:07:15 -07:00

vdso64

s390/vdso: filter out -mstack-guard and -mstack-size

2021-11-25 09:48:45 +01:00

.gitignore

…

alternative.c

s390/facilities: move stfl information from lowcore to global data

2021-06-07 17:06:58 +02:00

asm-offsets.c

s390/smp: enable DAT before CPU restart callback is called

2021-08-26 20:22:12 +02:00

audit.c

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audit.h

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base.S

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cache.c

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compat_audit.c

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compat_linux.c

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compat_linux.h

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compat_ptrace.h

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compat_signal.c

s390/signal: switch to using vdso for sigreturn and syscall restart

2021-07-08 22:09:47 +02:00

cpcmd.c

s390/cpcmd: use register pair instead of register asm

2021-06-18 16:41:22 +02:00

crash_dump.c

s390/dump: fix copying to user-space of swapped kdump oldmem

2021-11-25 09:48:45 +01:00

debug.c

s390/sclp: add tracing of SCLP interactions

2021-08-25 11:03:35 +02:00

diag.c

s390: rename dma section to amode31

2021-08-05 14:10:53 +02:00

dis.c

s390/disassembler: add instructions

2021-07-27 09:39:19 +02:00

dumpstack.c

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early_printk.c

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early.c

s390: make PCI mio support a machine flag

2021-07-27 09:39:19 +02:00

ebcdic.c

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entry.h

s390: remove do_signal() prototype and do_notify_resume() function

2021-08-25 11:03:34 +02:00

entry.S

s390/mcck: isolate SIE instruction when setting CIF_MCCK_GUEST flag

2022-06-14 18:36:13 +02:00

fpu.c

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ftrace.c

s390/ftrace: remove incorrect __va usage

2021-09-08 14:23:31 +02:00

ftrace.h

s390/ftrace: implement hotpatching

2021-08-03 14:31:40 +02:00

guarded_storage.c

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head64.S

s390/boot: move dma sections from decompressor to decompressed kernel

2021-07-27 09:39:17 +02:00

idle.c

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ima_arch.c

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ipl_vmparm.c

s390/cio: remove unused include linux/spinlock.h from cio.h

2021-07-27 09:39:13 +02:00

ipl.c

s390/kexec: fix return code handling

2021-11-25 09:48:41 +01:00

irq.c

s390/entry: fix duplicate tracking of irq nesting level

2021-12-22 09:32:36 +01:00

jump_label.c

s390/jump_label: print real address in a case of a jump label bug

2021-07-27 09:39:13 +02:00

kdebugfs.c

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kexec_elf.c

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kexec_image.c

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kprobes_insn_page.S

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kprobes.c

s390/kprobes: use is_kernel() helper

2021-07-05 12:44:23 +02:00

lgr.c

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machine_kexec_file.c

s390/kexec: handle R_390_PLT32DBL rela in arch_kexec_apply_relocations_add()

2022-01-16 09:12:41 +01:00

machine_kexec_reloc.c

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machine_kexec.c

s390/smp: enable DAT before CPU restart callback is called

2021-08-26 20:22:12 +02:00

Makefile

s390: rename dma section to amode31

2021-08-05 14:10:53 +02:00

mcount.S

s390/ftrace: fix ftrace_update_ftrace_func implementation

2021-07-15 12:54:58 +02:00

module.c

mm: defer kmemleak object creation of module_alloc()

2022-03-08 19:12:38 +01:00

nmi.c

s390/nmi: handle vector validity failures for KVM guests

2022-02-01 17:26:59 +01:00

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

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os_info.c

s390/dump: introduce boot data 'oldmem_data'

2021-07-27 09:39:16 +02:00

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

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perf_cpum_cf.c

s390/cpumf: cpum_cf PMU displays invalid value after hotplug remove

2021-11-18 19:17:17 +01:00

perf_cpum_sf.c

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perf_event.c

s390/perf: obtain sie_block from the right address

2022-06-09 10:23:21 +02:00

perf_regs.c

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process.c

s390/signal: switch to using vdso for sigreturn and syscall restart

2021-07-08 22:09:47 +02:00

processor.c

s390: replace deprecated CPU-hotplug functions

2021-08-05 14:10:53 +02:00

ptrace.c

s390/traps: add struct to access transactional diagnostic block

2021-06-07 17:06:58 +02:00

reipl.S

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relocate_kernel.S

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runtime_instr.c

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setup.c

s390/setup: avoid using memblock_enforce_memory_limit

2021-12-08 09:04:39 +01:00

signal.c

s390: remove do_signal() prototype and do_notify_resume() function

2021-08-25 11:03:34 +02:00

smp.c

s390/topology: fix topology information when calling cpu hotplug notifiers

2021-09-07 13:38:41 +02:00

stacktrace.c

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sthyi.c

s390/sthyi: use register pair instead of register asm

2021-06-18 16:41:22 +02:00

syscall.c

s390: rename PIF_SYSCALL_RESTART to PIF_EXECVE_PGSTE_RESTART

2021-07-08 22:12:17 +02:00

sysinfo.c

s390/sysinfo: get rid of register asm

2021-06-18 16:41:23 +02:00

text_amode31.S

s390/diag: make restart_part2 a local label

2021-08-25 11:03:34 +02:00

time.c

s390/stp: clock_delta should be signed

2022-06-09 10:23:21 +02:00

topology.c

s390/topology: fix topology information when calling cpu hotplug notifiers

2021-09-07 13:38:41 +02:00

trace.c

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traps.c

s390/traps: improve panic message for translation-specification exception

2022-05-25 09:57:25 +02:00

unwind_bc.c

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uprobes.c

s390: Fix fall-through warnings for Clang

2021-07-13 14:43:09 -05:00

uv.c

s390/uv: fully validate the VMA before calling follow_page()

2021-11-18 19:16:40 +01:00

vdso.c

s390/vdso: add minimal compat vdso

2021-07-08 15:37:28 +02:00

vmlinux.lds.S

s390: fix typo in linker script

2021-08-25 11:03:34 +02:00

vtime.c

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