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authorHeiko Carstens <hca@linux.ibm.com>2023-03-17 10:31:40 +0100
committerVasily Gorbik <gor@linux.ibm.com>2023-03-27 17:19:52 +0200
commite7615c9225d7c7562d1cd95ba8cc2cbf38c3d29e (patch)
tree1139568d37aa4e2815ea4e7ea5d7cd5ceab46cc5 /Documentation/features/sched
parents390/cpum_sf: remove flag PERF_CPUM_SF_FULL_BLOCKS (diff)
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linux-e7615c9225d7c7562d1cd95ba8cc2cbf38c3d29e.zip
s390: enable ARCH_HAS_MEMBARRIER_SYNC_CORE
s390 trivially supports the ARCH_HAS_MEMBARRIER_SYNC_CORE requirements since the used lpswe(y) instruction to return from any kernel context to user space performs CPU serialization. This is very similar to arm, arm64 and powerpc. See commit 70216e18e519 ("membarrier: Provide core serializing command, *_SYNC_CORE") for further details. Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'Documentation/features/sched')
-rw-r--r--Documentation/features/sched/membarrier-sync-core/arch-support.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/features/sched/membarrier-sync-core/arch-support.txt b/Documentation/features/sched/membarrier-sync-core/arch-support.txt
index 1e51614c136e..23260ca44946 100644
--- a/Documentation/features/sched/membarrier-sync-core/arch-support.txt
+++ b/Documentation/features/sched/membarrier-sync-core/arch-support.txt
@@ -5,7 +5,7 @@
#
# Architecture requirements
#
-# * arm/arm64/powerpc
+# * arm/arm64/powerpc/s390
#
# Rely on implicit context synchronization as a result of exception return
# when returning from IPI handler, and when returning to user-space.
@@ -45,7 +45,7 @@
| parisc: | TODO |
| powerpc: | ok |
| riscv: | TODO |
- | s390: | TODO |
+ | s390: | ok |
| sh: | TODO |
| sparc: | TODO |
| um: | TODO |