From: Xiongfeng Wang <wangxiongfeng2@huawei.com>
To: <rjw@rjwysocki.net>, <catalin.marinas@arm.com>, <james.morse@arm.com>
Cc: xiexiuqi@huawei.com, jonathan.cameron@huawei.com,
john.garry@huawei.com, linux-kernel@vger.kernel.org,
linux-acpi@vger.kernel.org, huawei.libin@huawei.com,
guohanjun@huawei.com, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH RFC 0/3] Support CPU hotplug for ARM64
Date: Sat, 29 Jun 2019 10:07:10 +0800 [thread overview]
Message-ID: <74bda3c2-e706-aa3b-441a-fb85e2a5c778@huawei.com> (raw)
In-Reply-To: <1561720392-45907-1-git-send-email-wangxiongfeng2@huawei.com>
Sorry, the third patch can't be applied to the lastest kernel. I will send another
version and attach the method to test this patchset.
On 2019/6/28 19:13, Xiongfeng Wang wrote:
> This patchset mark all the GICC node in MADT as possible CPUs even though it
> is disabled. But only those enabled GICC node are marked as present CPUs.
> So that kernel will initialize some CPU related data structure in advance before
> the CPU is actually hot added into the system. This patchset also implement
> 'acpi_(un)map_cpu()' and 'arch_(un)register_cpu()' for ARM64. These functions are
> needed to enable CPU hotplug.
>
> To support CPU hotplug, we need to add all the possible GICC node in MADT
> including those CPUs that are not present but may be hot added later. Those
> CPUs are marked as disabled in GICC nodes.
>
> Xiongfeng Wang (3):
> ACPI / scan: evaluate _STA for processors declared via ASL Device
> statement
> arm64: mark all the GICC nodes in MADT as possible cpu
> arm64: Add CPU hotplug support
>
> arch/arm64/kernel/acpi.c | 22 ++++++++++++++++++++++
> arch/arm64/kernel/setup.c | 19 ++++++++++++++++++-
> arch/arm64/kernel/smp.c | 11 +++++------
> drivers/acpi/scan.c | 12 ++++++++++++
> 4 files changed, 57 insertions(+), 7 deletions(-)
>
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next prev parent reply other threads:[~2019-06-29 2:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-28 11:13 [PATCH RFC 0/3] Support CPU hotplug for ARM64 Xiongfeng Wang
2019-06-28 11:13 ` [PATCH RFC 1/3] ACPI / scan: evaluate _STA for processors declared via ASL Device statement Xiongfeng Wang
2019-06-28 11:13 ` [PATCH RFC 2/3] arm64: mark all the GICC nodes in MADT as possible cpu Xiongfeng Wang
2019-06-28 11:13 ` [PATCH RFC 3/3] arm64: Add CPU hotplug support Xiongfeng Wang
2019-06-29 2:07 ` Xiongfeng Wang [this message]
2019-07-04 3:00 ` [PATCH RFC 0/3] Support CPU hotplug for ARM64 Jia He
2019-07-04 3:26 ` Xiongfeng Wang
2019-07-04 5:55 ` Jia He
2019-07-04 6:04 ` Jia He
2019-07-04 6:17 ` Xiongfeng Wang
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