* [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO
@ 2026-10-14 11:50 Heiko Carstens
2026-10-14 11:52 ` sashiko-bot
2026-10-14 12:20 ` Ilya Leoshkevich
0 siblings, 2 replies; 3+ messages in thread
From: Heiko Carstens @ 2026-10-14 11:50 UTC (permalink / raw)
To: Alexander Gordeev, Sven Schnelle, Vasily Gorbik,
Christian Borntraeger
Cc: linux-kernel, linux-s390
s390 is a Total Store Order (TSO) architecture. Therefore select
ARCH_MEMORY_ORDER_TSO which was introduced with [1]. As of now this has
only a small effect on futex_robust_unlock(), but that might change in
the future.
[1] commit 6149fc36c09b ("uaccess: Provide unsafe_atomic_store_release_user()")
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 4b51bc6e8948..ebdf9c8049af 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -145,6 +145,7 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_BH
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
+ select ARCH_MEMORY_ORDER_TSO
select ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
--
2.53.0
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO
2026-10-14 11:50 [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO Heiko Carstens
@ 2026-10-14 11:52 ` sashiko-bot
2026-10-14 12:20 ` Ilya Leoshkevich
1 sibling, 0 replies; 3+ messages in thread
From: sashiko-bot @ 2026-10-14 11:52 UTC (permalink / raw)
To: Heiko Carstens
Cc: linux-s390, Vasily Gorbik, Alexander Gordeev,
Christian Borntraeger
> s390 is a Total Store Order (TSO) architecture. Therefore select
> ARCH_MEMORY_ORDER_TSO which was introduced with [1]. As of now this has
> only a small effect on futex_robust_unlock(), but that might change in
> the future.
>
> [1] commit 6149fc36c09b ("uaccess: Provide unsafe_atomic_store_release_user()")
>
> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261014115006.537790-1-hca@linux.ibm.com?part=1
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO
2026-10-14 11:50 [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO Heiko Carstens
2026-10-14 11:52 ` sashiko-bot
@ 2026-10-14 12:20 ` Ilya Leoshkevich
1 sibling, 0 replies; 3+ messages in thread
From: Ilya Leoshkevich @ 2026-10-14 12:20 UTC (permalink / raw)
To: Heiko Carstens, Alexander Gordeev, Sven Schnelle, Vasily Gorbik,
Christian Borntraeger
Cc: linux-kernel, linux-s390
On 10/14/26 13:50, Heiko Carstens wrote:
> s390 is a Total Store Order (TSO) architecture. Therefore select
> ARCH_MEMORY_ORDER_TSO which was introduced with [1]. As of now this has
> only a small effect on futex_robust_unlock(), but that might change in
> the future.
>
> [1] commit 6149fc36c09b ("uaccess: Provide unsafe_atomic_store_release_user()")
>
> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
> ---
> arch/s390/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
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2026-10-14 11:50 [PATCH] s390: Select ARCH_MEMORY_ORDER_TSO Heiko Carstens
2026-10-14 11:52 ` sashiko-bot
2026-10-14 12:20 ` Ilya Leoshkevich
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