[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH v6 0/5] Implement CPU hotplug on Arm
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- Date: Thu, 12 Mar 2026 09:39:29 +0000
- Accept-language: en-US
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=epam.com; dmarc=pass action=none header.from=epam.com; dkim=pass header.d=epam.com; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=9h1bJ1/tUn7joR6dHEgZAHXjj+b/8RL4Td4YS9QK0Eg=; b=NV2xCkIqILWbjr2ivSLTwC7mf6AZxsU1KPk+3/0foci24hniPfrmKwK8797SXmq23o+lYh+H4SY9zO5X46qA903MjPnYeJ4M8PDRH+GiimYaYGnr3Sl/8tEw2mK4CYGX8BXnkdDnALw/tmypgdbI22H7PcLlODi9XOCdxRg2zNLLXXgnGIVuzXVN45peesS5i7Ye9FW2HM2NxZ69qOAedwcEhD0lt02FN8Pc4H1aaOjjnaWal5eBeCru/4fWjelMpnYli8ib+A2B/5wCN3dZyw7lV6JXE9Aiuf4fLICHDZZKWN+7AybfqOjLll1mgk42sOEbvLnGBgrKvf0f8EskIg==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=qbkA9KjVziARf69ofAqkwQiX3ZbRjhzNi67pgsBQJrjkq8TS4bjqyCcO47/GefOYv0pncXHK/W+Gi438OodLA+i3d5lQlzB6lbTZ5drGaa0grPCY7cv10d9ar05lCy05Z6rFls23B+JuKkVbLyglKFsjbZnErd5bdu1i15PBp3hKz61vykdhcYVzoxMEu6jJThoD9+8h8s2m1CBBkIXt24vR51Gqsxo/Y4qQGtxTP9HL/ofWvSrDBtzS7rri8tD+ToixJYLhKk1hpKTtzFJaHfo6f/FKRL+NYCzCOpvn7hxbno2DsW/9D3W2lrWnbP9SrxaTAc63EtALEYQrZ+1XGQ==
- Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=epam.com;
- Cc: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>
- Delivery-date: Thu, 12 Mar 2026 09:39:40 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcsgQf1/22PGqzSUaxhkScWwfAyw==
- Thread-topic: [PATCH v6 0/5] Implement CPU hotplug on Arm
This series implements support for CPU hotplug/unplug on Arm. To achieve this,
several things need to be done:
1. XEN_SYSCTL_CPU_HOTPLUG_* calls implemented on Arm64.
2. Enabled building of xen-hptool.
3. Migration of irqs from dying CPUs implemented.
Tested on QEMU.
v5->v6:
* see individual patches
v4->v5:
* drop merged patches
* combine "smp: Move cpu_up/down helpers to common code" with
"arm/sysctl: Implement cpu hotplug ops"
* see individual patches
v3->v4:
* add irq migration patches
* see individual patches
v2->v3:
* add docs
v1->v2:
* see individual patches
Mykyta Poturai (5):
arm/irq: Keep track of irq affinities
arm/irq: Migrate IRQs during CPU up/down operations
arm/sysctl: Implement cpu hotplug ops
tools: Allow building xen-hptool without CONFIG_MIGRATE
docs: Document CPU hotplug
SUPPORT.md | 1 +
docs/misc/cpu-hotplug.txt | 50 ++++++++++++++++++++++
tools/libs/guest/Makefile.common | 2 +-
tools/misc/Makefile | 2 +-
xen/arch/arm/gic-vgic.c | 2 +
xen/arch/arm/include/asm/irq.h | 4 ++
xen/arch/arm/irq.c | 69 ++++++++++++++++++++++++++++++-
xen/arch/arm/smp.c | 9 ++++
xen/arch/arm/smpboot.c | 8 ++++
xen/arch/arm/vgic.c | 14 ++++++-
xen/arch/arm/vgic/vgic-mmio-v2.c | 11 +++--
xen/arch/arm/vgic/vgic.c | 15 +++----
xen/arch/ppc/stubs.c | 4 ++
xen/arch/riscv/stubs.c | 5 +++
xen/arch/x86/include/asm/smp.h | 3 --
xen/arch/x86/platform_hypercall.c | 12 ++++++
xen/arch/x86/smp.c | 33 ++-------------
xen/arch/x86/sysctl.c | 21 ++++++----
xen/common/Kconfig | 6 +++
xen/common/smp.c | 35 ++++++++++++++++
xen/common/sysctl.c | 46 +++++++++++++++++++++
xen/include/xen/smp.h | 4 ++
xen/xsm/flask/hooks.c | 2 +-
23 files changed, 296 insertions(+), 62 deletions(-)
create mode 100644 docs/misc/cpu-hotplug.txt
--
2.51.2
|
