From: Oleksii Kurochko <oleksii.kurochko@gmail.com>
To: xen-devel@lists.xenproject.org
Cc: "Oleksii Kurochko" <oleksii.kurochko@gmail.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Julien Grall" <julien@xen.org>,
"Bertrand Marquis" <bertrand.marquis@arm.com>,
"Michal Orzel" <michal.orzel@amd.com>,
"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Jan Beulich" <jbeulich@suse.com>,
"Shawn Anastasio" <sanastasio@raptorengineering.com>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"Alistair Francis" <alistair.francis@wdc.com>,
"Bob Eshleman" <bobbyeshleman@gmail.com>,
"Connor Davis" <connojdavis@gmail.com>
Subject: [PATCH v2 0/2] Move percpu code to common
Date: Tue, 24 Sep 2024 18:42:26 +0200 [thread overview]
Message-ID: <cover.1727185495.git.oleksii.kurochko@gmail.com> (raw)
The per-CPU area management code, which is largely common across architectures,
is a strong candidate for consolidation into common code.
Currently, there is only one architectural-specific aspect:
1. INVALID_PERCPU_AREA:
ARM:
#define INVALID_PERCPU_AREA (-(long)__per_cpu_start)
x86:
#define INVALID_PERCPU_AREA (0x8000000000000000UL - (unsigned long)__per_cpu_start)
These changes do not affect the functional behavior for x86.
For Arm add support of CPU_RESUME_FAILED, CPU_REMOVE and freeing of percpu
in the case when system_state != SYS_STATE_suspend.
---
Changes in V2:
- update the cover letter message.
- move CPU_RESUME_FAILED, CPU_REMOVE handling to common code.
- rename PERCPU_SECTION to PERCPU_BSS.
- drop ARCH_PERCPU_AREA_CHECK and ARCH_CPU_PERCPU_CALLBACK and connected
functions.
- All other changes look at specific patch.
---
Oleksii Kurochko (2):
xen: introduce common macros for per-CPU sections defintion
xen: move per-cpu area management into common code
xen/arch/arm/Makefile | 1 -
xen/arch/arm/include/asm/smp.h | 7 +-
xen/arch/arm/percpu.c | 85 -----------------------
xen/arch/arm/xen.lds.S | 9 +--
xen/arch/ppc/include/asm/smp.h | 6 --
xen/arch/ppc/stubs.c | 1 -
xen/arch/ppc/xen.lds.S | 9 +--
xen/arch/riscv/include/asm/smp.h | 6 --
xen/arch/riscv/stubs.c | 1 -
xen/arch/x86/Makefile | 1 -
xen/arch/x86/include/asm/Makefile | 1 -
xen/arch/x86/include/asm/percpu.h | 16 +++++
xen/arch/x86/percpu.c | 112 ------------------------------
xen/arch/x86/xen.lds.S | 9 +--
xen/common/Makefile | 1 +
xen/common/percpu.c | 110 +++++++++++++++++++++++++++++
xen/include/asm-generic/percpu.h | 9 ++-
xen/include/xen/percpu.h | 4 ++
xen/include/xen/xen.lds.h | 10 +++
19 files changed, 153 insertions(+), 245 deletions(-)
delete mode 100644 xen/arch/arm/percpu.c
create mode 100644 xen/arch/x86/include/asm/percpu.h
delete mode 100644 xen/arch/x86/percpu.c
create mode 100644 xen/common/percpu.c
--
2.46.1
next reply other threads:[~2024-09-24 16:42 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-24 16:42 Oleksii Kurochko [this message]
2024-09-24 16:42 ` [PATCH v2 1/2] xen: introduce common macros for per-CPU sections defintion Oleksii Kurochko
2024-09-24 17:01 ` Andrew Cooper
2024-09-25 9:23 ` oleksii.kurochko
2024-09-25 9:56 ` Jan Beulich
2024-09-25 9:58 ` Andrew Cooper
2024-09-25 10:11 ` oleksii.kurochko
2024-09-24 16:42 ` [PATCH v2 2/2] xen: move per-cpu area management into common code Oleksii Kurochko
2024-09-25 15:12 ` Jan Beulich
2024-09-26 8:28 ` oleksii.kurochko
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