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From: Salil Mehta via <qemu-devel@nongnu.org>
To: <qemu-devel@nongnu.org>, <qemu-arm@nongnu.org>
Cc: <salil.mehta@huawei.com>, <maz@kernel.org>,
	<jean-philippe@linaro.org>, <jonathan.cameron@huawei.com>,
	<lpieralisi@kernel.org>, <peter.maydell@linaro.org>,
	<richard.henderson@linaro.org>, <imammedo@redhat.com>,
	<andrew.jones@linux.dev>, <david@redhat.com>, <philmd@linaro.org>,
	<eric.auger@redhat.com>, <will@kernel.org>, <ardb@kernel.org>,
	<oliver.upton@linux.dev>, <pbonzini@redhat.com>, <mst@redhat.com>,
	<gshan@redhat.com>, <rafael@kernel.org>,
	<borntraeger@linux.ibm.com>, <alex.bennee@linaro.org>,
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	<ilkka@os.amperecomputing.com>, <vishnu@os.amperecomputing.com>,
	<karl.heubaum@oracle.com>, <miguel.luis@oracle.com>,
	<salil.mehta@opnsrc.net>, <zhukeqian1@huawei.com>,
	<wangxiongfeng2@huawei.com>, <wangyanan55@huawei.com>,
	<jiakernel2@gmail.com>, <maobibo@loongson.cn>,
	<lixianglai@loongson.cn>
Subject: [PATCH RFC V2 10/37] arm/acpi: Enable ACPI support for vcpu hotplug
Date: Tue, 26 Sep 2023 11:04:09 +0100	[thread overview]
Message-ID: <20230926100436.28284-11-salil.mehta@huawei.com> (raw)
In-Reply-To: <20230926100436.28284-1-salil.mehta@huawei.com>

ACPI is required to interface QEMU with the guest. Roughly falls into below
cases,

1. Convey the possible vcpus config at the machine init time to the guest
   using various DSDT tables like MADT etc.
2. Convey vcpu hotplug events to guest(using GED)
3. Assist in evaluation of various ACPI methods(like _EVT, _STA, _OST, _EJ0,
   _MAT etc.)
4. Provides ACPI cpu hotplug state and 12 Byte memory mapped cpu hotplug
   control register interface to the OSPM/guest corresponding to each possible
   vcpu. The register interface consists of various R/W fields and their
   handling operations. These are called when ever register fields or memory
   regions are accessed(i.e. read or written) by OSPM when ever it evaluates
   various ACPI methods.

Note: lot of this framework code is inherited from the changes already done for
      x86 but still some minor changes are required to make it compatible with
      ARM64.)

This patch enables the ACPI support for virtual cpu hotplug. ACPI changes
required will follow in subsequent patches.

Co-developed-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Co-developed-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
---
 hw/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig
index 7e68348440..dae06158cd 100644
--- a/hw/arm/Kconfig
+++ b/hw/arm/Kconfig
@@ -29,6 +29,7 @@ config ARM_VIRT
     select ACPI_HW_REDUCED
     select ACPI_APEI
     select ACPI_VIOT
+    select ACPI_CPU_HOTPLUG
     select VIRTIO_MEM_SUPPORTED
     select ACPI_CXL
     select ACPI_HMAT
-- 
2.34.1



  parent reply	other threads:[~2023-09-26 10:09 UTC|newest]

Thread overview: 146+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-26 10:03 [PATCH RFC V2 00/37] Support of Virtual CPU Hotplug for ARMv8 Arch Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 01/37] arm/virt, target/arm: Add new ARMCPU {socket, cluster, core, thread}-id property Salil Mehta via
2023-09-26 23:57   ` [PATCH RFC V2 01/37] arm/virt,target/arm: Add new ARMCPU {socket,cluster,core,thread}-id property Gavin Shan
2023-10-02  9:53     ` Salil Mehta via
2023-10-02  9:53       ` Salil Mehta
2023-10-03  5:05       ` Gavin Shan
2023-09-26 10:04 ` [PATCH RFC V2 02/37] cpus-common: Add common CPU utility for possible vCPUs Salil Mehta via
2023-09-27  3:54   ` Gavin Shan
2023-10-02 10:21     ` Salil Mehta via
2023-10-02 10:21       ` Salil Mehta
2023-10-03  5:34       ` Gavin Shan
2023-09-26 10:04 ` [PATCH RFC V2 03/37] hw/arm/virt: Move setting of common CPU properties in a function Salil Mehta via
2023-09-27  5:16   ` Gavin Shan
2023-10-02 10:24     ` Salil Mehta via
2023-10-02 10:24       ` Salil Mehta
2023-10-10  6:46   ` Shaoqin Huang
2023-10-10  9:47     ` Salil Mehta via
2023-10-10  9:47       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 04/37] arm/virt, target/arm: Machine init time change common to vCPU {cold|hot}-plug Salil Mehta via
2023-09-27  6:28   ` [PATCH RFC V2 04/37] arm/virt,target/arm: " Gavin Shan
2023-10-02 16:12     ` Salil Mehta via
2023-10-02 16:12       ` Salil Mehta
2024-01-16 15:59       ` Jonathan Cameron via
2023-09-27  6:30   ` Gavin Shan
2023-10-02 10:27     ` Salil Mehta via
2023-10-02 10:27       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 05/37] accel/kvm: Extract common KVM vCPU {creation, parking} code Salil Mehta via
2023-09-27  6:51   ` [PATCH RFC V2 05/37] accel/kvm: Extract common KVM vCPU {creation,parking} code Gavin Shan
2023-10-02 16:20     ` Salil Mehta via
2023-10-02 16:20       ` Salil Mehta
2023-10-03  5:39       ` Gavin Shan
2023-09-26 10:04 ` [PATCH RFC V2 06/37] arm/virt, kvm: Pre-create disabled possible vCPUs @machine init Salil Mehta via
2023-09-27 10:04   ` [PATCH RFC V2 06/37] arm/virt,kvm: " Gavin Shan
2023-10-02 16:39     ` Salil Mehta via
2023-10-02 16:39       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 07/37] arm/virt, gicv3: Changes to pre-size GIC with possible vcpus " Salil Mehta via
2023-09-28  0:14   ` Gavin Shan
2023-10-16 16:15     ` Salil Mehta via
2023-10-16 16:15       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 08/37] arm/virt: Init PMU at host for all possible vcpus Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 09/37] hw/acpi: Move CPU ctrl-dev MMIO region len macro to common header file Salil Mehta via
2023-09-28  0:19   ` Gavin Shan
2023-10-16 16:20     ` Salil Mehta via
2023-10-16 16:20       ` Salil Mehta
2023-09-26 10:04 ` Salil Mehta via [this message]
2023-09-28  0:25   ` [PATCH RFC V2 10/37] arm/acpi: Enable ACPI support for vcpu hotplug Gavin Shan
2023-10-16 21:23     ` Salil Mehta via
2023-10-16 21:23       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 11/37] hw/acpi: Add ACPI CPU hotplug init stub Salil Mehta via
2023-09-28  0:28   ` Gavin Shan
2023-10-16 21:27     ` Salil Mehta via
2023-10-16 21:27       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 12/37] hw/acpi: Use qemu_present_cpu() API in ACPI CPU hotplug init Salil Mehta via
2023-09-28  0:40   ` Gavin Shan
2023-10-16 21:41     ` Salil Mehta via
2023-10-16 21:41       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 13/37] hw/acpi: Init GED framework with cpu hotplug events Salil Mehta via
2023-09-28  0:56   ` Gavin Shan
2023-10-16 21:44     ` Salil Mehta via
2023-10-16 21:44       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 14/37] arm/virt: Add cpu hotplug events to GED during creation Salil Mehta via
2023-09-28  1:03   ` Gavin Shan
2023-10-16 21:46     ` Salil Mehta via
2023-10-16 21:46       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 15/37] arm/virt: Create GED dev before *disabled* CPU Objs are destroyed Salil Mehta via
2023-09-28  1:08   ` Gavin Shan
2023-10-16 21:54     ` Salil Mehta via
2023-10-16 21:54       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 16/37] hw/acpi: Update CPUs AML with cpu-(ctrl)dev change Salil Mehta via
2023-09-28  1:26   ` Gavin Shan
2023-10-16 21:57     ` Salil Mehta via
2023-10-16 21:57       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 17/37] arm/virt/acpi: Build CPUs AML with CPU Hotplug support Salil Mehta via
2023-09-28  1:36   ` Gavin Shan
2023-10-16 22:05     ` Salil Mehta via
2023-10-16 22:05       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 18/37] arm/virt: Make ARM vCPU *present* status ACPI *persistent* Salil Mehta via
2023-09-28 23:18   ` Gavin Shan
2023-10-16 22:33     ` Salil Mehta via
2023-10-16 22:33       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 19/37] hw/acpi: ACPI/AML Changes to reflect the correct _STA.{PRES, ENA} Bits to Guest Salil Mehta via
2023-09-28 23:33   ` [PATCH RFC V2 19/37] hw/acpi: ACPI/AML Changes to reflect the correct _STA.{PRES,ENA} " Gavin Shan
2023-10-16 22:59     ` Salil Mehta via
2023-10-16 22:59       ` Salil Mehta
2024-01-17 21:46   ` [PATCH RFC V2 19/37] hw/acpi: ACPI/AML Changes to reflect the correct _STA.{PRES, ENA} " Jonathan Cameron via
2023-09-26 10:04 ` [PATCH RFC V2 20/37] hw/acpi: Update GED _EVT method AML with cpu scan Salil Mehta via
2023-09-28 23:35   ` Gavin Shan
2023-10-16 23:01     ` Salil Mehta via
2023-10-16 23:01       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 21/37] hw/arm: MADT Tbl change to size the guest with possible vCPUs Salil Mehta via
2023-09-28 23:43   ` Gavin Shan
2023-10-16 23:15     ` Salil Mehta via
2023-10-16 23:15       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 22/37] hw/acpi: Make _MAT method optional Salil Mehta via
2023-09-28 23:50   ` Gavin Shan
2023-10-16 23:17     ` Salil Mehta via
2023-10-16 23:17       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 23/37] arm/virt: Release objects for *disabled* possible vCPUs after init Salil Mehta via
2023-09-28 23:57   ` Gavin Shan
2023-10-16 23:28     ` Salil Mehta via
2023-10-16 23:28       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 24/37] hw/acpi: Update ACPI GED framework to support vCPU Hotplug Salil Mehta via
2023-09-26 11:02   ` Michael S. Tsirkin
2023-09-26 11:37     ` Salil Mehta via
2023-09-26 12:00       ` Michael S. Tsirkin
2023-09-26 12:27         ` Salil Mehta via
2023-09-26 13:02         ` lixianglai
2023-09-26 10:04 ` [PATCH RFC V2 25/37] arm/virt: Add/update basic hot-(un)plug framework Salil Mehta via
2023-09-29  0:20   ` Gavin Shan
2023-10-16 23:40     ` Salil Mehta via
2023-10-16 23:40       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 26/37] arm/virt: Changes to (un)wire GICC<->vCPU IRQs during hot-(un)plug Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 27/37] hw/arm, gicv3: Changes to update GIC with vCPU hot-plug notification Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 28/37] hw/intc/arm-gicv3*: Changes required to (re)init the vCPU register info Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 29/37] arm/virt: Update the guest(via GED) about CPU hot-(un)plug events Salil Mehta via
2023-09-29  0:30   ` Gavin Shan
2023-10-16 23:48     ` Salil Mehta via
2023-10-16 23:48       ` Salil Mehta
2023-09-26 10:04 ` [PATCH RFC V2 30/37] hw/arm: Changes required for reset and to support next boot Salil Mehta via
2023-09-26 10:04 ` [PATCH RFC V2 31/37] physmem, gdbstub: Common helping funcs/changes to *unrealize* vCPU Salil Mehta via
2023-10-03  6:33   ` [PATCH RFC V2 31/37] physmem,gdbstub: " Philippe Mathieu-Daudé
2023-10-03 10:22     ` Salil Mehta via
2023-10-03 10:22       ` Salil Mehta
2023-10-04  9:17       ` Salil Mehta via
2023-10-04  9:17         ` Salil Mehta
2023-09-26 10:36 ` [PATCH RFC V2 32/37] target/arm: Add support of *unrealize* ARMCPU during vCPU Hot-unplug Salil Mehta via
2023-09-26 10:36   ` [PATCH RFC V2 33/37] target/arm/kvm: Write CPU state back to KVM on reset Salil Mehta via
2023-09-26 10:36   ` [PATCH RFC V2 34/37] target/arm/kvm, tcg: Register/Handle SMCCC hypercall exits to VMM/Qemu Salil Mehta via
2023-09-29  4:15     ` [PATCH RFC V2 34/37] target/arm/kvm,tcg: " Gavin Shan
2023-10-17  0:03       ` Salil Mehta via
2023-10-17  0:03         ` Salil Mehta
2023-09-26 10:36   ` [PATCH RFC V2 35/37] hw/arm: Support hotplug capability check using _OSC method Salil Mehta via
2023-09-29  4:23     ` Gavin Shan
2023-10-17  0:13       ` Salil Mehta via
2023-10-17  0:13         ` Salil Mehta
2023-09-26 10:36   ` [PATCH RFC V2 36/37] tcg/mttcg: enable threads to unregister in tcg_ctxs[] Salil Mehta via
2023-09-26 10:36   ` [PATCH RFC V2 37/37] hw/arm/virt: Expose cold-booted CPUs as MADT GICC Enabled Salil Mehta via
2023-10-11 10:23 ` [PATCH RFC V2 00/37] Support of Virtual CPU Hotplug for ARMv8 Arch Vishnu Pajjuri
2023-10-11 10:32   ` Salil Mehta via
2023-10-11 10:32     ` Salil Mehta
2023-10-11 11:08     ` Vishnu Pajjuri
2023-10-11 20:15       ` Salil Mehta
2023-10-12 17:02 ` Miguel Luis
2023-10-12 17:54   ` Salil Mehta via
2023-10-12 17:54     ` Salil Mehta
2023-10-13 10:43     ` Miguel Luis

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