From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>, <linux-pm@vger.kernel.org>,
<loongarch@lists.linux.dev>, <linux-acpi@vger.kernel.org>,
<linux-arch@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>, <kvmarm@lists.linux.dev>,
<x86@kernel.org>, Russell King <linux@armlinux.org.uk>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Miguel Luis <miguel.luis@oracle.com>,
James Morse <james.morse@arm.com>,
Salil Mehta <salil.mehta@huawei.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>, <linuxarm@huawei.com>,
<justin.he@arm.com>, <jianyong.wu@arm.com>
Subject: [PATCH v7 14/16] arm64: Kconfig: Enable hotplug CPU on arm64 if ACPI_PROCESSOR is enabled.
Date: Thu, 18 Apr 2024 14:54:10 +0100 [thread overview]
Message-ID: <20240418135412.14730-15-Jonathan.Cameron@huawei.com> (raw)
In-Reply-To: <20240418135412.14730-1-Jonathan.Cameron@huawei.com>
In order to move arch_register_cpu() to be called via the same path
for initially present CPUs described by ACPI and hotplugged CPUs
ACPI_HOTPLUG_CPU needs to be enabled.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
v7: No change.
---
arch/arm64/Kconfig | 1 +
arch/arm64/kernel/acpi.c | 16 ++++++++++++++++
2 files changed, 17 insertions(+)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 7b11c98b3e84..fed7d0d54179 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -5,6 +5,7 @@ config ARM64
select ACPI_CCA_REQUIRED if ACPI
select ACPI_GENERIC_GSI if ACPI
select ACPI_GTDT if ACPI
+ select ACPI_HOTPLUG_CPU if ACPI_PROCESSOR
select ACPI_IORT if ACPI
select ACPI_REDUCED_HARDWARE_ONLY if ACPI
select ACPI_MCFG if (ACPI && PCI)
diff --git a/arch/arm64/kernel/acpi.c b/arch/arm64/kernel/acpi.c
index dba8fcec7f33..a74e80d58df3 100644
--- a/arch/arm64/kernel/acpi.c
+++ b/arch/arm64/kernel/acpi.c
@@ -29,6 +29,7 @@
#include <linux/pgtable.h>
#include <acpi/ghes.h>
+#include <acpi/processor.h>
#include <asm/cputype.h>
#include <asm/cpu_ops.h>
#include <asm/daifflags.h>
@@ -413,6 +414,21 @@ void arch_reserve_mem_area(acpi_physical_address addr, size_t size)
memblock_mark_nomap(addr, size);
}
+#ifdef CONFIG_ACPI_HOTPLUG_CPU
+int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, u32 apci_id,
+ int *pcpu)
+{
+ return 0;
+}
+EXPORT_SYMBOL(acpi_map_cpu); /* check why */
+
+int acpi_unmap_cpu(int cpu)
+{
+ return 0;
+}
+EXPORT_SYMBOL(acpi_unmap_cpu);
+#endif /* CONFIG_ACPI_HOTPLUG_CPU */
+
#ifdef CONFIG_ACPI_FFH
/*
* Implements ARM64 specific callbacks to support ACPI FFH Operation Region as
--
2.39.2
next prev parent reply other threads:[~2024-04-18 14:01 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-18 13:53 [PATCH v7 00/16] ACPI/arm64: add support for virtual cpu hotplug Jonathan Cameron
2024-04-18 13:53 ` [PATCH v7 01/16] ACPI: processor: Simplify initial onlining to use same path for cold and hotplug Jonathan Cameron
2024-04-22 18:46 ` Rafael J. Wysocki
2024-04-23 6:18 ` Hanjun Guo
2024-04-26 9:23 ` Gavin Shan
2024-04-18 13:53 ` [PATCH v7 02/16] cpu: Do not warn on arch_register_cpu() returning -EPROBE_DEFER Jonathan Cameron
2024-04-23 6:22 ` Hanjun Guo
2024-04-26 9:20 ` Gavin Shan
2024-04-18 13:53 ` [PATCH v7 03/16] ACPI: processor: Drop duplicated check on _STA (enabled + present) Jonathan Cameron
2024-04-22 18:48 ` Rafael J. Wysocki
2024-04-23 6:49 ` Hanjun Guo
2024-04-23 9:31 ` Rafael J. Wysocki
2024-04-23 11:13 ` Hanjun Guo
2024-04-26 9:24 ` Gavin Shan
2024-04-18 13:54 ` [PATCH v7 04/16] ACPI: processor: Move checks and availability of acpi_processor earlier Jonathan Cameron
2024-04-22 18:56 ` Rafael J. Wysocki
2024-04-24 16:53 ` Jonathan Cameron
2024-04-23 11:53 ` Hanjun Guo
2024-04-24 17:18 ` Jonathan Cameron
2024-04-25 1:20 ` Hanjun Guo
2024-04-18 13:54 ` [PATCH v7 05/16] ACPI: processor: Add acpi_get_processor_handle() helper Jonathan Cameron
2024-04-22 18:59 ` Rafael J. Wysocki
2024-04-26 9:15 ` Gavin Shan
2024-04-18 13:54 ` [PATCH v7 06/16] ACPI: processor: Register deferred CPUs from acpi_processor_get_info() Jonathan Cameron
2024-04-22 19:02 ` Rafael J. Wysocki
2024-04-23 11:58 ` Hanjun Guo
2024-04-26 9:18 ` Gavin Shan
2024-04-18 13:54 ` [PATCH v7 07/16] ACPI: scan: switch to flags for acpi_scan_check_and_detach() Jonathan Cameron
2024-04-22 19:05 ` Rafael J. Wysocki
2024-04-23 12:02 ` Hanjun Guo
2024-04-26 9:25 ` Gavin Shan
2024-04-18 13:54 ` [PATCH v7 08/16] ACPI: Add post_eject to struct acpi_scan_handler for cpu hotplug Jonathan Cameron
2024-04-22 19:10 ` Rafael J. Wysocki
2024-04-23 12:06 ` Hanjun Guo
2024-04-26 11:48 ` Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 09/16] arm64: acpi: Move get_cpu_for_acpi_id() to a header Jonathan Cameron
2024-04-22 10:46 ` Jonathan Cameron
2024-04-23 12:10 ` Hanjun Guo
2024-04-18 13:54 ` [PATCH v7 10/16] irqchip/gic-v3: Don't return errors from gic_acpi_match_gicc() Jonathan Cameron
2024-04-22 10:39 ` Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 11/16] irqchip/gic-v3: Add support for ACPI's disabled but 'online capable' CPUs Jonathan Cameron
2024-04-22 10:40 ` Jonathan Cameron
2024-04-23 12:01 ` Marc Zyngier
2024-04-24 12:54 ` Jonathan Cameron
2024-04-24 15:33 ` Marc Zyngier
2024-04-24 16:35 ` Salil Mehta
2024-04-24 17:08 ` Jonathan Cameron
2024-04-25 10:23 ` Jonathan Cameron
2024-04-25 12:31 ` Jonathan Cameron
2024-04-25 15:00 ` Jonathan Cameron
2024-04-25 16:55 ` Jonathan Cameron
2024-04-26 12:41 ` Marc Zyngier
2024-04-25 9:28 ` Jonathan Cameron
2024-04-25 9:56 ` Jonathan Cameron
2024-04-25 10:13 ` Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 12/16] arm64: psci: Ignore DENIED CPUs Jonathan Cameron
2024-04-22 10:44 ` Jonathan Cameron
2024-04-26 9:36 ` Gavin Shan
2024-04-26 9:57 ` Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 13/16] arm64: arch_register_cpu() variant to check if an ACPI handle is now available Jonathan Cameron
2024-04-18 13:54 ` Jonathan Cameron [this message]
2024-04-24 17:24 ` [PATCH v7 14/16] arm64: Kconfig: Enable hotplug CPU on arm64 if ACPI_PROCESSOR is enabled Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 15/16] arm64: document virtual CPU hotplug's expectations Jonathan Cameron
2024-04-18 13:54 ` [PATCH v7 16/16] cpumask: Add enabled cpumask for present CPUs that can be brought online Jonathan Cameron
2024-04-18 19:50 ` [PATCH v7 00/16] ACPI/arm64: add support for virtual cpu hotplug Rafael J. Wysocki
2024-04-22 19:16 ` Rafael J. Wysocki
2024-04-19 15:39 ` Miguel Luis
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240418135412.14730-15-Jonathan.Cameron@huawei.com \
--to=jonathan.cameron@huawei.com \
--cc=bp@alien8.de \
--cc=catalin.marinas@arm.com \
--cc=dave.hansen@linux.intel.com \
--cc=james.morse@arm.com \
--cc=jean-philippe@linaro.org \
--cc=jianyong.wu@arm.com \
--cc=justin.he@arm.com \
--cc=kvmarm@lists.linux.dev \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arch@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=linux@armlinux.org.uk \
--cc=linuxarm@huawei.com \
--cc=loongarch@lists.linux.dev \
--cc=miguel.luis@oracle.com \
--cc=mingo@redhat.com \
--cc=peterz@infradead.org \
--cc=rafael@kernel.org \
--cc=salil.mehta@huawei.com \
--cc=tglx@linutronix.de \
--cc=will@kernel.org \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).