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linux-stable/arch/s390
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Philipp Rudo 3038bbd1bb s390/kexec_file: fix diag308 subcode when loading crash kernel 
commit 613775d62e upstream.

diag308 subcode 0 performes a clear reset which inlcudes the reset of
all registers in the system. While this is the preferred behavior when
loading a normal kernel via kexec it prevents the crash kernel to store
the register values in the dump. To prevent this use subcode 1 when
loading a crash kernel instead.

Fixes: ee337f5469 ("s390/kexec_file: Add crash support to image loader")
Cc: <stable@vger.kernel.org> # 4.17
Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Reported-by: Xiaoying Yan <yiyan@redhat.com>
Tested-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-30 11:51:34 +01:00
..
appldata
boot s390/startup: avoid save_area_sync overflow 2020-11-05 11:43:14 +01:00
configs s390: update defconfigs 2019-10-04 16:37:33 +02:00
crypto s390/crypto: Fix unsigned variable compared with zero 2019-12-31 16:45:41 +01:00
hypfs Merge branch 'work.mount3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-09-24 12:33:34 -07:00
include mm/gup: fix gup_fast with dynamic page table folding 2020-10-01 13:18:24 +02:00
kernel s390/smp: perform initial CPU reset also for SMT siblings 2020-12-30 11:51:34 +01:00
kvm KVM: s390: Remove false WARN_ON_ONCE for the PQAP instruction 2020-05-14 07:58:25 +02:00
lib s390/mm: fix page table upgrade vs 2ndary address mode accesses 2020-04-29 16:33:25 +02:00
mm s390/gmap: improve THP splitting 2020-08-19 08:16:29 +02:00
net s390/bpf: Use kvcalloc for addrs array 2019-12-31 16:45:06 +01:00
numa s390/numa: set node distance to LOCAL_DISTANCE 2020-09-03 11:26:50 +02:00
oprofile
pci s390/pci: Log new handle in clp_disable_fh() 2020-06-17 16:40:23 +02:00
purgatory s390/kexec_file: fix diag308 subcode when loading crash kernel 2020-12-30 11:51:34 +01:00
scripts
tools
Kbuild
Kconfig Merge branch 'next-lockdown' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2019-09-28 08:14:15 -07:00
Kconfig.debug
Makefile s390: make 'install' not depend on vmlinux 2020-03-12 13:00:13 +01:00