From: "Michael S. Tsirkin" <mst@redhat.com>
To: Salil Mehta <salil.mehta@huawei.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"qemu-arm@nongnu.org" <qemu-arm@nongnu.org>,
"maz@kernel.org" <maz@kernel.org>,
"jean-philippe@linaro.org" <jean-philippe@linaro.org>,
Jonathan Cameron <jonathan.cameron@huawei.com>,
"lpieralisi@kernel.org" <lpieralisi@kernel.org>,
"peter.maydell@linaro.org" <peter.maydell@linaro.org>,
"richard.henderson@linaro.org" <richard.henderson@linaro.org>,
"imammedo@redhat.com" <imammedo@redhat.com>,
"andrew.jones@linux.dev" <andrew.jones@linux.dev>,
"david@redhat.com" <david@redhat.com>,
"philmd@linaro.org" <philmd@linaro.org>,
"eric.auger@redhat.com" <eric.auger@redhat.com>,
"will@kernel.org" <will@kernel.org>,
"ardb@kernel.org" <ardb@kernel.org>,
"oliver.upton@linux.dev" <oliver.upton@linux.dev>,
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"gshan@redhat.com" <gshan@redhat.com>,
"rafael@kernel.org" <rafael@kernel.org>,
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"alex.bennee@linaro.org" <alex.bennee@linaro.org>,
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"karl.heubaum@oracle.com" <karl.heubaum@oracle.com>,
"miguel.luis@oracle.com" <miguel.luis@oracle.com>,
"salil.mehta@opnsrc.net" <salil.mehta@opnsrc.net>,
zhukeqian <zhukeqian1@huawei.com>,
"wangxiongfeng (C)" <wangxiongfeng2@huawei.com>,
"wangyanan (Y)" <wangyanan55@huawei.com>,
"jiakernel2@gmail.com" <jiakernel2@gmail.com>,
"maobibo@loongson.cn" <maobibo@loongson.cn>,
"lixianglai@loongson.cn" <lixianglai@loongson.cn>
Subject: Re: [PATCH RFC V2 24/37] hw/acpi: Update ACPI GED framework to support vCPU Hotplug
Date: Tue, 26 Sep 2023 08:00:08 -0400 [thread overview]
Message-ID: <20230926075838-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <f68a5ccc153f4971b5fbe681095a7624@huawei.com>
On Tue, Sep 26, 2023 at 11:37:38AM +0000, Salil Mehta wrote:
> > From: Michael S. Tsirkin <mst@redhat.com>
> > Sent: Tuesday, September 26, 2023 12:02 PM
> > To: Salil Mehta <salil.mehta@huawei.com>
> > Cc: qemu-devel@nongnu.org; qemu-arm@nongnu.org; maz@kernel.org; jean-
> > philippe@linaro.org; Jonathan Cameron <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; gshan@redhat.com; rafael@kernel.org;
> > borntraeger@linux.ibm.com; alex.bennee@linaro.org; linux@armlinux.org.uk;
> > darren@os.amperecomputing.com; ilkka@os.amperecomputing.com;
> > vishnu@os.amperecomputing.com; karl.heubaum@oracle.com;
> > miguel.luis@oracle.com; salil.mehta@opnsrc.net; zhukeqian
> > <zhukeqian1@huawei.com>; wangxiongfeng (C) <wangxiongfeng2@huawei.com>;
> > wangyanan (Y) <wangyanan55@huawei.com>; jiakernel2@gmail.com;
> > maobibo@loongson.cn; lixianglai@loongson.cn
> > Subject: Re: [PATCH RFC V2 24/37] hw/acpi: Update ACPI GED framework to
> > support vCPU Hotplug
> >
> > On Tue, Sep 26, 2023 at 11:04:23AM +0100, Salil Mehta wrote:
> > > ACPI GED shall be used to convey to the guest kernel about any CPU hot-
> > (un)plug
> > > events. Therefore, existing ACPI GED framework inside QEMU needs to be
> > enhanced
> > > to support CPU hotplug state and events.
> > >
> > > Co-developed-by: Salil Mehta <salil.mehta@huawei.com>
> >
> > Co-developed with yourself?
> >
> > didn't you co-develop this with xianglai li?
>
> No, our effort is quite old ARM patch-set existed since the year 2020
> without any change. Please check the original patch-set here:
>
> https://lore.kernel.org/qemu-devel/20200613213629.21984-11-salil.mehta@huawei.com/
>
>
> To be fair to the authors, it will not be right to add another SOB here.
>
I see. And what's the difference with patches that xianglai li posted?
Are they both rebases of the same old patch then?
>
> >
> > Just include his S.O.B then, and drop the non-standard Co-developed-by.
>
> Co-developed-by Tag has been added to ensure main authors of the patch
> get highlighted clearly.
I think I don't know the patch provenance at this point.
>
> >
> >
> >
> > > 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/acpi/generic_event_device.c | 10 ++++++++++
> > > 1 file changed, 10 insertions(+)
> > >
> > > diff --git a/hw/acpi/generic_event_device.c
> > b/hw/acpi/generic_event_device.c
> > > index ad252e6a91..0266733a54 100644
> > > --- a/hw/acpi/generic_event_device.c
> > > +++ b/hw/acpi/generic_event_device.c
> > > @@ -12,6 +12,7 @@
> > > #include "qemu/osdep.h"
> > > #include "qapi/error.h"
> > > #include "hw/acpi/acpi.h"
> > > +#include "hw/acpi/cpu.h"
> > > #include "hw/acpi/generic_event_device.h"
> > > #include "hw/irq.h"
> > > #include "hw/mem/pc-dimm.h"
> > > @@ -239,6 +240,8 @@ static void acpi_ged_device_plug_cb(HotplugHandler
> > *hotplug_dev,
> > > } else {
> > > acpi_memory_plug_cb(hotplug_dev, &s->memhp_state, dev,
> > errp);
> > > }
> > > + } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
> > > + acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
> > > } else {
> > > error_setg(errp, "virt: device plug request for unsupported
> > device"
> > > " type: %s", object_get_typename(OBJECT(dev)));
> > > @@ -253,6 +256,8 @@ static void acpi_ged_unplug_request_cb(HotplugHandler
> > *hotplug_dev,
> > > if ((object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
> > > !(object_dynamic_cast(OBJECT(dev),
> > TYPE_NVDIMM)))) {
> > > acpi_memory_unplug_request_cb(hotplug_dev, &s->memhp_state, dev,
> > errp);
> > > + } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
> > > + acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev,
> > errp);
> > > } else {
> > > error_setg(errp, "acpi: device unplug request for unsupported
> > device"
> > > " type: %s", object_get_typename(OBJECT(dev)));
> > > @@ -266,6 +271,8 @@ static void acpi_ged_unplug_cb(HotplugHandler
> > *hotplug_dev,
> > >
> > > if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > > acpi_memory_unplug_cb(&s->memhp_state, dev, errp);
> > > + } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
> > > + acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
> > > } else {
> > > error_setg(errp, "acpi: device unplug for unsupported device"
> > > " type: %s", object_get_typename(OBJECT(dev)));
> > > @@ -277,6 +284,7 @@ static void acpi_ged_ospm_status(AcpiDeviceIf *adev,
> > ACPIOSTInfoList ***list)
> > > AcpiGedState *s = ACPI_GED(adev);
> > >
> > > acpi_memory_ospm_status(&s->memhp_state, list);
> > > + acpi_cpu_ospm_status(&s->cpuhp_state, list);
> > > }
> > >
> > > static void acpi_ged_send_event(AcpiDeviceIf *adev, AcpiEventStatusBits
> > ev)
> > > @@ -291,6 +299,8 @@ static void acpi_ged_send_event(AcpiDeviceIf *adev,
> > AcpiEventStatusBits ev)
> > > sel = ACPI_GED_PWR_DOWN_EVT;
> > > } else if (ev & ACPI_NVDIMM_HOTPLUG_STATUS) {
> > > sel = ACPI_GED_NVDIMM_HOTPLUG_EVT;
> > > + } else if (ev & ACPI_CPU_HOTPLUG_STATUS) {
> > > + sel = ACPI_GED_CPU_HOTPLUG_EVT;
> > > } else {
> > > /* Unknown event. Return without generating interrupt. */
> > > warn_report("GED: Unsupported event %d. No irq injected", ev);
> > > --
> > > 2.34.1
next prev parent reply other threads:[~2023-09-26 12:00 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 ` [PATCH RFC V2 10/37] arm/acpi: Enable ACPI support for vcpu hotplug Salil Mehta via
2023-09-28 0:25 ` 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 [this message]
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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