s390 architecture · Supported

Maintainers

• M Heiko Carstens <hca@linux.ibm.com>
• M Vasily Gorbik <gor@linux.ibm.com>
• M Alexander Gordeev <agordeev@linux.ibm.com>
• R Christian Borntraeger <borntraeger@linux.ibm.com>
• R Sven Schnelle <svens@linux.ibm.com>

Paths

• F Documentation/driver-api/s390-drivers.rst
• F Documentation/arch/s390/
• F arch/s390/
• F drivers/s390/
• F drivers/watchdog/diag288_wdt.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH 00/22] Simplify special kernel page table handling
  2026-07-14 14:06 · 1 reply in 7d · Kevin Brodsky <hidden>

Active reviewers (last 30 days)

• Heiko Carstens <hca@linux.ibm.com>
  1 attestation (1 Acked-by) · last on 2026-06-30

Recent patches

Most-recent 30 patches in this subsystem on linux-arch (capped at 30), ordered by date desc.

• HOTtoday [PATCH 09/22] s390: mm: use mm_is_kernel() for kernel mm checks
  2026-07-14 · Kevin Brodsky <hidden>
• HOTtoday REVIEWED: 2 (2M) [PATCH v5 6/8] s390/runtime-const: Introduce runtime_const_mask_32()
  2026-06-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• COLD39d [PATCH v3 13/13] irq: Optimize reschedule check in local_interrupt_enable()
  2026-06-05 · Boqun Feng <boqun@kernel.org>
• COLD39d [PATCH v3 12/13] s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  2026-06-05 · Boqun Feng <boqun@kernel.org>
• COLD39d [PATCH v3 03/13] preempt: Introduce __preempt_count_{sub, add}_return()
  2026-06-05 · Boqun Feng <boqun@kernel.org>
• COLD40d [PATCH v2 12/12] s390/preempt: Enable HAS_SEPARATE_PREEMPT_RESCHED_BITS
  2026-05-26 · Boqun Feng <boqun@kernel.org>
• COLD40d [PATCH v2 03/12] preempt: Introduce __preempt_count_{sub, add}_return()
  2026-05-26 · Boqun Feng <boqun@kernel.org>
• COLD33d [PATCH 09/11] treewide: Convert custom kernel_param_ops .get callbacks to seq_buf via cocci
  2026-05-21 · Kees Cook <kees@kernel.org>
• COLD33d [PATCH 04/11] treewide: Convert struct kernel_param_ops initializers to DEFINE_KERNEL_PARAM_OPS
  2026-05-21 · Kees Cook <kees@kernel.org>
• STALE62d Re: [PATCH 00/11] Refcounted interrupt disable and SpinLockIrq for rust (Part 1)
  2026-05-09 · Heiko Carstens <hca@linux.ibm.com>
• STALE62d [PATCH 03/11] preempt: Introduce __preempt_count_{sub, add}_return()
  2026-05-08 · Boqun Feng <boqun@kernel.org>
• COLD21d REVIEWED: 2 (2M) [PATCH v4 6/8] s390/runtime-const: Introduce runtime_const_mask_32()
  2026-04-30 · K Prateek Nayak <kprateek.nayak@amd.com>
• STALE76d [RFC PATCH v1 5/9] uaccess: Switch to copy_{to/from}_user_partial() when relevant
  2026-04-27 · "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
• STALE76d [RFC PATCH v1 2/9] uaccess: Convert INLINE_COPY_{TO/FROM}_USER to kconfig and reduce ifdefery
  2026-04-27 · "Christophe Leroy (CS GROUP)" <chleroy@kernel.org>
• DORMANTno replies [PATCH v5 8/8] treewide: Stop defining __ASSEMBLY__ for assembler files
  2026-04-09 · Thomas Huth <hidden>
• STALE92d REVIEWED: 2 (2M) [PATCH v3 5/7] s390/runtime-const: Introduce runtime_const_mask_32()
  2026-04-02 · K Prateek Nayak <kprateek.nayak@amd.com>
• STALE75d REVIEWED: 2 (2M) [PATCH 18/28] s390: move the XOR code to lib/raid/
  2026-03-27 · Christoph Hellwig <hch@lst.de>
• STALE75d [PATCH 09/28] xor: remove macro abuse for XOR implementation registrations
  2026-03-27 · Christoph Hellwig <hch@lst.de>
• STALE75d [PATCH 08/28] xor: split xor.h
  2026-03-27 · Christoph Hellwig <hch@lst.de>
• STALE110d REVIEWED: 2 (2M) [PATCH 17/26] s390: move the XOR code to lib/raid/
  2026-03-24 · Christoph Hellwig <hch@lst.de>
• STALE110d [PATCH 08/26] xor: remove macro abuse for XOR implementation registrations
  2026-03-24 · Christoph Hellwig <hch@lst.de>
• STALE110d [PATCH 07/26] xor: split xor.h
  2026-03-24 · Christoph Hellwig <hch@lst.de>
• STALE95d REVIEWED: 33 (31M) [PATCH v14 2/4] asm-generic: Move TIF_SINGLESTEP to generic TIF bits
  2026-03-20 · Jinjie Ruan <hidden>
• STALE95d REVIEWED: 35 (33M) [PATCH v14 1/4] s390: Rename TIF_SINGLE_STEP to TIF_SINGLESTEP
  2026-03-20 · Jinjie Ruan <hidden>
• STALE105d [PATCH RESEND v2 2/4]IPC: Added system call number in all most common arch.
  2026-03-20 · Mathura_Kumar <hidden>
• STALE116d REVIEWED: 2 (2M) [PATCH v13 RESEND 11/14] s390: Rename TIF_SINGLE_STEP to TIF_SINGLESTEP
  2026-03-17 · Jinjie Ruan <hidden>
• STALE116d [PATCH v13 RESEND 12/14] asm-generic: Move TIF_SINGLESTEP to generic TIF bits
  2026-03-17 · Jinjie Ruan <hidden>
• STALE119d REVIEWED: 2 (2M) Re: [RFC PATCH v2 5/7] s390/runtime-const: Introduce runtime_const_mask_32()
  2026-03-16 · Heiko Carstens <hca@linux.ibm.com>
• STALE119d [RFC PATCH v2 5/7] s390/runtime-const: Introduce runtime_const_mask_32()
  2026-03-16 · K Prateek Nayak <kprateek.nayak@amd.com>
• STALE118d [PATCH v2 2/4]IPC: Added system call number in all most common arch.
  2026-03-15 · Mathura_Kumar <hidden>

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE126d [PATCH 08/25] xor: remove macro abuse for XOR implementation registrations
  2026-02-26 · Christoph Hellwig <hch@lst.de>
• STALE117d [PATCH 09/15] s390: Remove AT_VECTOR_SIZE_ARCH from UAPI
  2026-03-02 · Thomas Weißschuh <hidden>
• STALE119d [PATCH 07/27] xor: split xor.h
  2026-03-11 · Christoph Hellwig <hch@lst.de>
• STALE119d [PATCH 08/27] xor: remove macro abuse for XOR implementation registrations
  2026-03-11 · Christoph Hellwig <hch@lst.de>
• STALE119d [PATCH 17/27] s390: move the XOR code to lib/raid/
  2026-03-11 · Christoph Hellwig <hch@lst.de>
• STALE119d [PATCH 20/27] xor: make xor.ko self-contained in lib/raid/
  2026-03-11 · Christoph Hellwig <hch@lst.de>
• STALE102d [PATCH v1 2/4] IPC: Added system call number in all most common arch.
  2026-03-15 · Mathura_Kumar <hidden>
• STALE118d [PATCH v2 2/4]IPC: Added system call number in all most common arch.
  2026-03-15 · Mathura_Kumar <hidden>
• STALE105d [PATCH RESEND v2 2/4]IPC: Added system call number in all most common arch.
  2026-03-20 · Mathura_Kumar <hidden>
• STALE110d [PATCH 07/26] xor: split xor.h
  2026-03-24 · Christoph Hellwig <hch@lst.de>