From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DBB5FC76191 for ; Thu, 18 Jul 2019 12:42:18 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AE17421019 for ; Thu, 18 Jul 2019 12:42:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE17421019 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:37604 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho5jl-00014M-UA for qemu-devel@archiver.kernel.org; Thu, 18 Jul 2019 08:42:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46707) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1ho5jZ-0000Vl-L6 for qemu-devel@nongnu.org; Thu, 18 Jul 2019 08:42:07 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ho5jX-00050x-Sx for qemu-devel@nongnu.org; Thu, 18 Jul 2019 08:42:05 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38788) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ho5jR-0004rc-Vl; Thu, 18 Jul 2019 08:41:58 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3DEB030842A1; Thu, 18 Jul 2019 12:41:53 +0000 (UTC) Received: from localhost (unknown [10.43.2.182]) by smtp.corp.redhat.com (Postfix) with ESMTP id E14A85D9D5; Thu, 18 Jul 2019 12:41:47 +0000 (UTC) Date: Thu, 18 Jul 2019 14:41:46 +0200 From: Igor Mammedov To: Shameer Kolothum Message-ID: <20190718144146.0af95667@redhat.com> In-Reply-To: <20190716153816.17676-7-shameerali.kolothum.thodi@huawei.com> References: <20190716153816.17676-1-shameerali.kolothum.thodi@huawei.com> <20190716153816.17676-7-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.40]); Thu, 18 Jul 2019 12:41:53 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: Re: [Qemu-devel] [PATCH-for-4.2 v7 06/10] hw/arm/virt: Enable device memory cold/hot plug with ACPI boot X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org, sameo@linux.intel.com, ard.biesheuvel@linaro.org, shannon.zhaosl@gmail.com, qemu-devel@nongnu.org, xuwei5@hisilicon.com, linuxarm@huawei.com, eric.auger@redhat.com, qemu-arm@nongnu.org, sebastien.boeuf@intel.com, lersek@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Tue, 16 Jul 2019 16:38:12 +0100 Shameer Kolothum wrote: > This initializes the GED device with base memory and irq, configures > ged memory hotplug event and builds the corresponding aml code. With > this, both hot and cold plug of device memory is enabled now for Guest > with ACPI boot. > > Memory cold plug support with Guest DT boot is not yet supported. > > Signed-off-by: Shameer Kolothum > Reviewed-by: Eric Auger > --- > v6 --> v7 > Disabled ACPI GED dev creation for machine < 4.2. > > --- > hw/arm/Kconfig | 2 ++ > hw/arm/virt-acpi-build.c | 14 +++++++++++ > hw/arm/virt.c | 51 ++++++++++++++++++++++++++++++++++------ > include/hw/arm/virt.h | 4 ++++ > 4 files changed, 64 insertions(+), 7 deletions(-) > > diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig > index 84961c17ab..ad7f7c089b 100644 > --- a/hw/arm/Kconfig > +++ b/hw/arm/Kconfig > @@ -22,6 +22,8 @@ config ARM_VIRT > select ACPI_PCI > select MEM_DEVICE > select DIMM > + select ACPI_MEMORY_HOTPLUG > + select ACPI_HW_REDUCED > > config CHEETAH > bool > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c > index 0afb372769..018b1e326d 100644 > --- a/hw/arm/virt-acpi-build.c > +++ b/hw/arm/virt-acpi-build.c > @@ -40,6 +40,8 @@ > #include "hw/acpi/aml-build.h" > #include "hw/acpi/utils.h" > #include "hw/acpi/pci.h" > +#include "hw/acpi/memory_hotplug.h" > +#include "hw/acpi/generic_event_device.h" > #include "hw/pci/pcie_host.h" > #include "hw/pci/pci.h" > #include "hw/arm/virt.h" > @@ -705,6 +707,7 @@ static void > build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) > { > Aml *scope, *dsdt; > + MachineState *ms = MACHINE(vms); > const MemMapEntry *memmap = vms->memmap; > const int *irqmap = vms->irqmap; > > @@ -729,6 +732,17 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) > vms->highmem, vms->highmem_ecam); > acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO], > (irqmap[VIRT_GPIO] + ARM_SPI_BASE)); > + if (vms->acpi_dev) { > + build_ged_aml(scope, "\\_SB."GED_DEVICE, > + HOTPLUG_HANDLER(vms->acpi_dev), > + irqmap[VIRT_ACPI_GED] + ARM_SPI_BASE, AML_SYSTEM_MEMORY); > + } > + > + if (vms->acpi_dev && ms->ram_slots) { > + build_memory_hotplug_aml(scope, ms->ram_slots, "\\_SB", NULL, > + AML_SYSTEM_MEMORY); > + } > + > acpi_dsdt_add_power_button(scope); > > aml_append(dsdt, scope); > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > index bbe156dc35..ffcccc05ad 100644 > --- a/hw/arm/virt.c > +++ b/hw/arm/virt.c > @@ -66,6 +66,7 @@ > #include "target/arm/internals.h" > #include "hw/mem/pc-dimm.h" > #include "hw/mem/nvdimm.h" > +#include "hw/acpi/generic_event_device.h" > > #define DEFINE_VIRT_MACHINE_LATEST(major, minor, latest) \ > static void virt_##major##_##minor##_class_init(ObjectClass *oc, \ > @@ -136,6 +137,8 @@ static const MemMapEntry base_memmap[] = { > [VIRT_GPIO] = { 0x09030000, 0x00001000 }, > [VIRT_SECURE_UART] = { 0x09040000, 0x00001000 }, > [VIRT_SMMU] = { 0x09050000, 0x00020000 }, > + [VIRT_PCDIMM_ACPI] = { 0x09070000, MEMORY_HOTPLUG_IO_LEN }, > + [VIRT_ACPI_GED] = { 0x09080000, ACPI_GED_REG_LEN }, > [VIRT_MMIO] = { 0x0a000000, 0x00000200 }, > /* ...repeating for a total of NUM_VIRTIO_TRANSPORTS, each of that size */ > [VIRT_PLATFORM_BUS] = { 0x0c000000, 0x02000000 }, > @@ -171,6 +174,7 @@ static const int a15irqmap[] = { > [VIRT_PCIE] = 3, /* ... to 6 */ > [VIRT_GPIO] = 7, > [VIRT_SECURE_UART] = 8, > + [VIRT_ACPI_GED] = 9, > [VIRT_MMIO] = 16, /* ...to 16 + NUM_VIRTIO_TRANSPORTS - 1 */ > [VIRT_GIC_V2M] = 48, /* ...to 48 + NUM_GICV2M_SPIS - 1 */ > [VIRT_SMMU] = 74, /* ...to 74 + NUM_SMMU_IRQS - 1 */ > @@ -520,6 +524,25 @@ static void fdt_add_pmu_nodes(const VirtMachineState *vms) > } > } > > +static inline DeviceState *create_acpi_ged(VirtMachineState *vms, qemu_irq *pic) > +{ > + DeviceState *dev; > + int irq = vms->irqmap[VIRT_ACPI_GED]; > + uint32_t event = ACPI_GED_MEM_HOTPLUG_EVT; > + > + dev = DEVICE(object_new(TYPE_ACPI_GED)); > + qdev_prop_set_uint64(dev, "memhp-base", > + vms->memmap[VIRT_PCDIMM_ACPI].base); > + qdev_prop_set_uint64(dev, "ged-base", vms->memmap[VIRT_ACPI_GED].base); > + qdev_prop_set_uint32(dev, "ged-event", event); > + object_property_add_child(qdev_get_machine(), "acpi-ged", > + OBJECT(dev), NULL); > + qdev_init_nofail(dev); > + qdev_connect_gpio_out_named(dev, "ged-irq", 0, pic[irq]); leaking 'dev' reference created by object_new(), you need to unref it here. > + > + return dev; > +} > + > static void create_its(VirtMachineState *vms, DeviceState *gicdev) > { > const char *itsclass = its_class_name(); > @@ -1697,6 +1720,10 @@ static void machvirt_init(MachineState *machine) > > create_gpio(vms, pic); > > + if (!vmc->no_acpi_dev && aarch64 && firmware_loaded && acpi_enabled) { suggest s/no_acpi_dev/has_ged/ > + vms->acpi_dev = create_acpi_ged(vms, pic); > + } > + > /* Create mmio transports, so the user can create virtio backends > * (which will be automatically plugged in to the transports). If > * no backend is created the transport will just sit harmlessly idle. > @@ -1876,27 +1903,34 @@ static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms) > static void virt_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, > Error **errp) > { > + VirtMachineState *vms = VIRT_MACHINE(hotplug_dev); > + const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM); > > - /* > - * The device memory is not yet exposed to the Guest either through > - * DT or ACPI and hence both cold/hot plug of memory is explicitly > - * disabled for now. > - */ > - if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) { > - error_setg(errp, "memory cold/hot plug is not yet supported"); > + if (is_nvdimm) { > + error_setg(errp, "nvdimm is not yet supported"); > return; > } > > + if (!vms->acpi_dev) { > + error_setg(errp, "memory hotplug is not enabled: missing acpi device"); > + return; > + } > + > + hotplug_handler_pre_plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, errp); > + > pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp); > } > > static void virt_memory_plug(HotplugHandler *hotplug_dev, > DeviceState *dev, Error **errp) > { > + HotplugHandlerClass *hhc; > VirtMachineState *vms = VIRT_MACHINE(hotplug_dev); > > pc_dimm_plug(PC_DIMM(dev), MACHINE(vms), NULL); > > + hhc = HOTPLUG_HANDLER_GET_CLASS(vms->acpi_dev); > + hhc->plug(HOTPLUG_HANDLER(vms->acpi_dev), dev, NULL); > } > > static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, > @@ -2102,8 +2136,11 @@ DEFINE_VIRT_MACHINE_AS_LATEST(4, 2) > > static void virt_machine_4_1_options(MachineClass *mc) > { > + VirtMachineClass *vmc = VIRT_MACHINE_CLASS(OBJECT_CLASS(mc)); > + > virt_machine_4_2_options(mc); > compat_props_add(mc->compat_props, hw_compat_4_1, hw_compat_4_1_len); > + vmc->no_acpi_dev = true; > } > DEFINE_VIRT_MACHINE(4, 1) > > diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h > index a72094204e..32892af1dd 100644 > --- a/include/hw/arm/virt.h > +++ b/include/hw/arm/virt.h > @@ -77,6 +77,8 @@ enum { > VIRT_GPIO, > VIRT_SECURE_UART, > VIRT_SECURE_MEM, > + VIRT_PCDIMM_ACPI, > + VIRT_ACPI_GED, > VIRT_LOWMEMMAP_LAST, > }; > > @@ -106,6 +108,7 @@ typedef struct { > bool claim_edge_triggered_timers; > bool smbios_old_sys_ver; > bool no_highmem_ecam; > + bool no_acpi_dev; it deserved a comment or maybe be more specific and s/acpi_dev/ged/ + comment > } VirtMachineClass; > > typedef struct { > @@ -133,6 +136,7 @@ typedef struct { > uint32_t iommu_phandle; > int psci_conduit; > hwaddr highest_gpa; > + DeviceState *acpi_dev; > } VirtMachineState; > > #define VIRT_ECAM_ID(high) (high ? VIRT_HIGH_PCIE_ECAM : VIRT_PCIE_ECAM)