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linux-stable/arch/s390
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Heiko Carstens 53980121e1 KVM: s390: fix sthyi error handling 
[ Upstream commit 0c02cc576e ]

Commit 9fb6c9b3fe ("s390/sthyi: add cache to store hypervisor info")
added cache handling for store hypervisor info. This also changed the
possible return code for sthyi_fill().

Instead of only returning a condition code like the sthyi instruction would
do, it can now also return a negative error value (-ENOMEM). handle_styhi()
was not changed accordingly. In case of an error, the negative error value
would incorrectly injected into the guest PSW.

Add proper error handling to prevent this, and update the comment which
describes the possible return values of sthyi_fill().

Fixes: 9fb6c9b3fe ("s390/sthyi: add cache to store hypervisor info")
Reviewed-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Link: https://lore.kernel.org/r/20230727182939.2050744-1-hca@linux.ibm.com
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-11 12:14:08 +02:00
..
appldata s390: simplify dynamic sysctl registration for appldata_register_ops 2023-03-20 10:56:49 +01:00
boot s390/mm: fix direct map accounting 2023-04-13 17:36:28 +02:00
configs s390/iommu: get rid of S390_CCW_IOMMU and S390_AP_IOMMU 2023-05-17 15:20:18 +02:00
crypto s390/crypto: use vector instructions only if available for ChaCha20 2023-05-15 14:20:13 +02:00
hypfs s390/hypfs: remove unused info_blk_hdr__pcpus() function 2022-11-23 16:24:07 +01:00
include s390/uapi: cover statfs padding by growing f_spare 2023-05-17 15:20:17 +02:00
kernel KVM: s390: fix sthyi error handling 2023-08-11 12:14:08 +02:00
kvm KVM: s390: fix sthyi error handling 2023-08-11 12:14:08 +02:00
lib s390/lib: use SYM* macros instead of ENTRY(), etc. 2023-04-19 17:24:16 +02:00
mm s390/vmem: split pages when debug pagealloc is enabled 2023-08-11 12:14:08 +02:00
net bpf-next-for-netdev 2023-04-21 20:32:37 -07:00
pci Merge branch 'uaccess-inline-asm-cleanup' into features 2023-04-04 18:29:28 +02:00
purgatory s390/purgatory: disable branch profiling 2023-06-01 16:59:43 +02:00
tools
Kbuild
Kconfig s390/iommu: get rid of S390_CCW_IOMMU and S390_AP_IOMMU 2023-05-17 15:20:18 +02:00
Kconfig.debug
Makefile s390/decompressor: fix misaligned symbol build error 2023-07-23 13:54:08 +02:00