* Re: [Qemu-devel] [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices
2017-11-25 15:16 ` [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices Eduardo Habkost
@ 2017-11-25 17:08 ` Greg Kurz
2017-11-27 1:51 ` David Gibson
` (2 subsequent siblings)
3 siblings, 0 replies; 9+ messages in thread
From: Greg Kurz @ 2017-11-25 17:08 UTC (permalink / raw)
To: Eduardo Habkost
Cc: jgross, Peter Maydell, Thomas Huth, sstabellini,
Michael S. Tsirkin, qemu-devel, Alexander Graf, Marcel Apfelbaum,
qemu-arm, qemu-ppc, Anthony Perard, xen-devel, Laszlo Ersek,
David Gibson
On Sat, 25 Nov 2017 13:16:05 -0200
Eduardo Habkost <ehabkost@redhat.com> wrote:
> The existing has_dynamic_sysbus flag makes the machine accept
> every user-creatable sysbus device type on the command-line.
> Replace it with a list of allowed device types, so machines can
> easily accept some sysbus devices while rejecting others.
>
> To keep exactly the same behavior as before, the existing
> has_dynamic_sysbus=true assignments are replaced with a
> TYPE_SYS_BUS_DEVICE entry on the allowed list. Other patches
> will replace the TYPE_SYS_BUS_DEVICE entries with more specific
> lists of devices.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Marcel Apfelbaum <marcel@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Cc: xen-devel@lists.xenproject.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
Reviewed-by: Greg Kurz <groug@kaod.org>
> Changes v1 -> v2:
> * Replace "dynamic sysbus whitelist" with "allowed sysbus devices"
> * Simply add TYPE_SYS_BUS_DEVICE to the list on existing
> has_dynamic_sysbus=true machines, and make machine-types more
> strict in separate patches
> ---
> include/hw/boards.h | 5 ++++-
> hw/arm/virt.c | 3 ++-
> hw/core/machine.c | 43 +++++++++++++++++++++++++++++--------------
> hw/i386/pc_q35.c | 3 ++-
> hw/ppc/e500plat.c | 4 +++-
> hw/ppc/spapr.c | 3 ++-
> hw/xen/xen_backend.c | 7 ++++++-
> 7 files changed, 48 insertions(+), 20 deletions(-)
>
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 156b16f7a6..041bc08971 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -76,6 +76,9 @@ void machine_set_cpu_numa_node(MachineState *machine,
> const CpuInstanceProperties *props,
> Error **errp);
>
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
> +
> +
> /**
> * CPUArchId:
> * @arch_id - architecture-dependent CPU ID of present or possible CPU
> @@ -179,7 +182,6 @@ struct MachineClass {
> no_floppy:1,
> no_cdrom:1,
> no_sdcard:1,
> - has_dynamic_sysbus:1,
> pci_allow_0_address:1,
> legacy_fw_cfg_order:1;
> int is_default;
> @@ -197,6 +199,7 @@ struct MachineClass {
> bool ignore_memory_transaction_failures;
> int numa_mem_align_shift;
> const char **valid_cpu_types;
> + strList *allowed_dynamic_sysbus_devices;
> bool auto_enable_numa_with_memhp;
> void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
> int nb_nodes, ram_addr_t size);
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9e18b410d7..fa6dc15fcd 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1591,7 +1591,8 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
> * configuration of the particular instance.
> */
> mc->max_cpus = 255;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->block_default_type = IF_VIRTIO;
> mc->no_cdrom = 1;
> mc->pci_allow_0_address = true;
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 36c2fb069c..ab2ec292f3 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -335,29 +335,44 @@ static bool machine_get_enforce_config_section(Object *obj, Error **errp)
> return ms->enforce_config_section;
> }
>
> -static void error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
> {
> - error_report("Option '-device %s' cannot be handled by this machine",
> - object_class_get_name(object_get_class(OBJECT(sbdev))));
> - exit(1);
> + strList *item = g_new0(strList, 1);
> +
> + item->value = g_strdup(type);
> + item->next = mc->allowed_dynamic_sysbus_devices;
> + mc->allowed_dynamic_sysbus_devices = item;
> }
>
> -static void machine_init_notify(Notifier *notifier, void *data)
> +static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
> {
> - Object *machine = qdev_get_machine();
> - ObjectClass *oc = object_get_class(machine);
> - MachineClass *mc = MACHINE_CLASS(oc);
> + MachineState *machine = opaque;
> + MachineClass *mc = MACHINE_GET_CLASS(machine);
> + bool allowed = false;
> + strList *wl;
>
> - if (mc->has_dynamic_sysbus) {
> - /* Our machine can handle dynamic sysbus devices, we're all good */
> - return;
> + for (wl = mc->allowed_dynamic_sysbus_devices;
> + !allowed && wl;
> + wl = wl->next) {
> + allowed |= !!object_dynamic_cast(OBJECT(sbdev), wl->value);
> }
>
> + if (!allowed) {
> + error_report("Option '-device %s' cannot be handled by this machine",
> + object_class_get_name(object_get_class(OBJECT(sbdev))));
> + exit(1);
> + }
> +}
> +
> +static void machine_init_notify(Notifier *notifier, void *data)
> +{
> + MachineState *machine = MACHINE(qdev_get_machine());
> +
> /*
> - * Loop through all dynamically created devices and check whether there
> - * are sysbus devices among them. If there are, error out.
> + * Loop through all dynamically created sysbus devices and check if they are
> + * all allowed. If a device is not allowed, error out.
> */
> - foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
> + foreach_dynamic_sysbus_device(validate_sysbus_device, machine);
> }
>
> HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index d6060043ac..d0b0e5b422 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -299,7 +299,8 @@ static void pc_q35_machine_options(MachineClass *m)
> m->default_machine_opts = "firmware=bios-256k.bin";
> m->default_display = "std";
> m->no_floppy = 1;
> - m->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(m, TYPE_SYS_BUS_DEVICE);
> m->max_cpus = 288;
> }
>
> diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
> index e59e80fb9e..438118c29b 100644
> --- a/hw/ppc/e500plat.c
> +++ b/hw/ppc/e500plat.c
> @@ -15,6 +15,7 @@
> #include "hw/boards.h"
> #include "sysemu/device_tree.h"
> #include "sysemu/kvm.h"
> +#include "hw/sysbus.h"
> #include "hw/pci/pci.h"
> #include "hw/ppc/openpic.h"
> #include "kvm_ppc.h"
> @@ -63,7 +64,8 @@ static void e500plat_machine_init(MachineClass *mc)
> mc->desc = "generic paravirt e500 platform";
> mc->init = e500plat_init;
> mc->max_cpus = 32;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
> }
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index d682f013d4..82040cc5d1 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -3603,7 +3603,8 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
> mc->default_boot_order = "";
> mc->default_ram_size = 512 * M_BYTE;
> mc->kvm_type = spapr_kvm_type;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->pci_allow_0_address = true;
> mc->get_hotplug_handler = spapr_get_hotplug_handler;
> hc->pre_plug = spapr_machine_device_pre_plug;
> diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
> index 0f849a26d2..82380ea9ee 100644
> --- a/hw/xen/xen_backend.c
> +++ b/hw/xen/xen_backend.c
> @@ -564,7 +564,12 @@ static void xen_set_dynamic_sysbus(void)
> ObjectClass *oc = object_get_class(machine);
> MachineClass *mc = MACHINE_CLASS(oc);
>
> - mc->has_dynamic_sysbus = true;
> + /*
> + * Emulate old mc->has_dynamic_sysbus=true assignment
> + *
> + *TODO: add only Xen devices to the list
> + */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> }
>
> int xen_be_register(const char *type, struct XenDevOps *ops)
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^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices
2017-11-25 15:16 ` [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices Eduardo Habkost
2017-11-25 17:08 ` [Qemu-devel] " Greg Kurz
@ 2017-11-27 1:51 ` David Gibson
2017-11-27 8:39 ` Marcel Apfelbaum
2017-11-28 16:55 ` [Qemu-devel] " Marc-André Lureau
3 siblings, 0 replies; 9+ messages in thread
From: David Gibson @ 2017-11-27 1:51 UTC (permalink / raw)
To: Eduardo Habkost
Cc: jgross, Peter Maydell, Thomas Huth, sstabellini,
Michael S. Tsirkin, qemu-devel, Alexander Graf, Anthony Perard,
qemu-arm, qemu-ppc, Marcel Apfelbaum, xen-devel, Laszlo Ersek
[-- Attachment #1.1: Type: text/plain, Size: 9054 bytes --]
On Sat, Nov 25, 2017 at 01:16:05PM -0200, Eduardo Habkost wrote:
> The existing has_dynamic_sysbus flag makes the machine accept
> every user-creatable sysbus device type on the command-line.
> Replace it with a list of allowed device types, so machines can
> easily accept some sysbus devices while rejecting others.
>
> To keep exactly the same behavior as before, the existing
> has_dynamic_sysbus=true assignments are replaced with a
> TYPE_SYS_BUS_DEVICE entry on the allowed list. Other patches
> will replace the TYPE_SYS_BUS_DEVICE entries with more specific
> lists of devices.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Marcel Apfelbaum <marcel@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Cc: xen-devel@lists.xenproject.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
> ---
> Changes v1 -> v2:
> * Replace "dynamic sysbus whitelist" with "allowed sysbus devices"
> * Simply add TYPE_SYS_BUS_DEVICE to the list on existing
> has_dynamic_sysbus=true machines, and make machine-types more
> strict in separate patches
> ---
> include/hw/boards.h | 5 ++++-
> hw/arm/virt.c | 3 ++-
> hw/core/machine.c | 43 +++++++++++++++++++++++++++++--------------
> hw/i386/pc_q35.c | 3 ++-
> hw/ppc/e500plat.c | 4 +++-
> hw/ppc/spapr.c | 3 ++-
> hw/xen/xen_backend.c | 7 ++++++-
> 7 files changed, 48 insertions(+), 20 deletions(-)
>
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 156b16f7a6..041bc08971 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -76,6 +76,9 @@ void machine_set_cpu_numa_node(MachineState *machine,
> const CpuInstanceProperties *props,
> Error **errp);
>
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
> +
> +
> /**
> * CPUArchId:
> * @arch_id - architecture-dependent CPU ID of present or possible CPU
> @@ -179,7 +182,6 @@ struct MachineClass {
> no_floppy:1,
> no_cdrom:1,
> no_sdcard:1,
> - has_dynamic_sysbus:1,
> pci_allow_0_address:1,
> legacy_fw_cfg_order:1;
> int is_default;
> @@ -197,6 +199,7 @@ struct MachineClass {
> bool ignore_memory_transaction_failures;
> int numa_mem_align_shift;
> const char **valid_cpu_types;
> + strList *allowed_dynamic_sysbus_devices;
> bool auto_enable_numa_with_memhp;
> void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
> int nb_nodes, ram_addr_t size);
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9e18b410d7..fa6dc15fcd 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1591,7 +1591,8 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
> * configuration of the particular instance.
> */
> mc->max_cpus = 255;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->block_default_type = IF_VIRTIO;
> mc->no_cdrom = 1;
> mc->pci_allow_0_address = true;
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 36c2fb069c..ab2ec292f3 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -335,29 +335,44 @@ static bool machine_get_enforce_config_section(Object *obj, Error **errp)
> return ms->enforce_config_section;
> }
>
> -static void error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
> {
> - error_report("Option '-device %s' cannot be handled by this machine",
> - object_class_get_name(object_get_class(OBJECT(sbdev))));
> - exit(1);
> + strList *item = g_new0(strList, 1);
> +
> + item->value = g_strdup(type);
> + item->next = mc->allowed_dynamic_sysbus_devices;
> + mc->allowed_dynamic_sysbus_devices = item;
> }
>
> -static void machine_init_notify(Notifier *notifier, void *data)
> +static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
> {
> - Object *machine = qdev_get_machine();
> - ObjectClass *oc = object_get_class(machine);
> - MachineClass *mc = MACHINE_CLASS(oc);
> + MachineState *machine = opaque;
> + MachineClass *mc = MACHINE_GET_CLASS(machine);
> + bool allowed = false;
> + strList *wl;
>
> - if (mc->has_dynamic_sysbus) {
> - /* Our machine can handle dynamic sysbus devices, we're all good */
> - return;
> + for (wl = mc->allowed_dynamic_sysbus_devices;
> + !allowed && wl;
> + wl = wl->next) {
> + allowed |= !!object_dynamic_cast(OBJECT(sbdev), wl->value);
> }
>
> + if (!allowed) {
> + error_report("Option '-device %s' cannot be handled by this machine",
> + object_class_get_name(object_get_class(OBJECT(sbdev))));
> + exit(1);
> + }
> +}
> +
> +static void machine_init_notify(Notifier *notifier, void *data)
> +{
> + MachineState *machine = MACHINE(qdev_get_machine());
> +
> /*
> - * Loop through all dynamically created devices and check whether there
> - * are sysbus devices among them. If there are, error out.
> + * Loop through all dynamically created sysbus devices and check if they are
> + * all allowed. If a device is not allowed, error out.
> */
> - foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
> + foreach_dynamic_sysbus_device(validate_sysbus_device, machine);
> }
>
> HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index d6060043ac..d0b0e5b422 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -299,7 +299,8 @@ static void pc_q35_machine_options(MachineClass *m)
> m->default_machine_opts = "firmware=bios-256k.bin";
> m->default_display = "std";
> m->no_floppy = 1;
> - m->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(m, TYPE_SYS_BUS_DEVICE);
> m->max_cpus = 288;
> }
>
> diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
> index e59e80fb9e..438118c29b 100644
> --- a/hw/ppc/e500plat.c
> +++ b/hw/ppc/e500plat.c
> @@ -15,6 +15,7 @@
> #include "hw/boards.h"
> #include "sysemu/device_tree.h"
> #include "sysemu/kvm.h"
> +#include "hw/sysbus.h"
> #include "hw/pci/pci.h"
> #include "hw/ppc/openpic.h"
> #include "kvm_ppc.h"
> @@ -63,7 +64,8 @@ static void e500plat_machine_init(MachineClass *mc)
> mc->desc = "generic paravirt e500 platform";
> mc->init = e500plat_init;
> mc->max_cpus = 32;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
> }
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index d682f013d4..82040cc5d1 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -3603,7 +3603,8 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
> mc->default_boot_order = "";
> mc->default_ram_size = 512 * M_BYTE;
> mc->kvm_type = spapr_kvm_type;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->pci_allow_0_address = true;
> mc->get_hotplug_handler = spapr_get_hotplug_handler;
> hc->pre_plug = spapr_machine_device_pre_plug;
> diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
> index 0f849a26d2..82380ea9ee 100644
> --- a/hw/xen/xen_backend.c
> +++ b/hw/xen/xen_backend.c
> @@ -564,7 +564,12 @@ static void xen_set_dynamic_sysbus(void)
> ObjectClass *oc = object_get_class(machine);
> MachineClass *mc = MACHINE_CLASS(oc);
>
> - mc->has_dynamic_sysbus = true;
> + /*
> + * Emulate old mc->has_dynamic_sysbus=true assignment
> + *
> + *TODO: add only Xen devices to the list
> + */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> }
>
> int xen_be_register(const char *type, struct XenDevOps *ops)
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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_______________________________________________
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https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices
2017-11-25 15:16 ` [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices Eduardo Habkost
2017-11-25 17:08 ` [Qemu-devel] " Greg Kurz
2017-11-27 1:51 ` David Gibson
@ 2017-11-27 8:39 ` Marcel Apfelbaum
2017-11-28 16:55 ` [Qemu-devel] " Marc-André Lureau
3 siblings, 0 replies; 9+ messages in thread
From: Marcel Apfelbaum @ 2017-11-27 8:39 UTC (permalink / raw)
To: Eduardo Habkost, qemu-devel
Cc: jgross, Peter Maydell, Thomas Huth, sstabellini,
Michael S. Tsirkin, Alexander Graf, qemu-arm, qemu-ppc,
Anthony Perard, xen-devel, Laszlo Ersek, David Gibson
On 25/11/2017 17:16, Eduardo Habkost wrote:
> The existing has_dynamic_sysbus flag makes the machine accept
> every user-creatable sysbus device type on the command-line.
> Replace it with a list of allowed device types, so machines can
> easily accept some sysbus devices while rejecting others.
>
> To keep exactly the same behavior as before, the existing
> has_dynamic_sysbus=true assignments are replaced with a
> TYPE_SYS_BUS_DEVICE entry on the allowed list. Other patches
> will replace the TYPE_SYS_BUS_DEVICE entries with more specific
> lists of devices.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Marcel Apfelbaum <marcel@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Cc: xen-devel@lists.xenproject.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
> ---
> Changes v1 -> v2:
> * Replace "dynamic sysbus whitelist" with "allowed sysbus devices"
> * Simply add TYPE_SYS_BUS_DEVICE to the list on existing
> has_dynamic_sysbus=true machines, and make machine-types more
> strict in separate patches
> ---
> include/hw/boards.h | 5 ++++-
> hw/arm/virt.c | 3 ++-
> hw/core/machine.c | 43 +++++++++++++++++++++++++++++--------------
> hw/i386/pc_q35.c | 3 ++-
> hw/ppc/e500plat.c | 4 +++-
> hw/ppc/spapr.c | 3 ++-
> hw/xen/xen_backend.c | 7 ++++++-
> 7 files changed, 48 insertions(+), 20 deletions(-)
>
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 156b16f7a6..041bc08971 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -76,6 +76,9 @@ void machine_set_cpu_numa_node(MachineState *machine,
> const CpuInstanceProperties *props,
> Error **errp);
>
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
> +
> +
> /**
> * CPUArchId:
> * @arch_id - architecture-dependent CPU ID of present or possible CPU
> @@ -179,7 +182,6 @@ struct MachineClass {
> no_floppy:1,
> no_cdrom:1,
> no_sdcard:1,
> - has_dynamic_sysbus:1,
> pci_allow_0_address:1,
> legacy_fw_cfg_order:1;
> int is_default;
> @@ -197,6 +199,7 @@ struct MachineClass {
> bool ignore_memory_transaction_failures;
> int numa_mem_align_shift;
> const char **valid_cpu_types;
> + strList *allowed_dynamic_sysbus_devices;
> bool auto_enable_numa_with_memhp;
> void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
> int nb_nodes, ram_addr_t size);
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9e18b410d7..fa6dc15fcd 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1591,7 +1591,8 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
> * configuration of the particular instance.
> */
> mc->max_cpus = 255;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->block_default_type = IF_VIRTIO;
> mc->no_cdrom = 1;
> mc->pci_allow_0_address = true;
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 36c2fb069c..ab2ec292f3 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -335,29 +335,44 @@ static bool machine_get_enforce_config_section(Object *obj, Error **errp)
> return ms->enforce_config_section;
> }
>
> -static void error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
> {
> - error_report("Option '-device %s' cannot be handled by this machine",
> - object_class_get_name(object_get_class(OBJECT(sbdev))));
> - exit(1);
> + strList *item = g_new0(strList, 1);
> +
> + item->value = g_strdup(type);
> + item->next = mc->allowed_dynamic_sysbus_devices;
> + mc->allowed_dynamic_sysbus_devices = item;
> }
>
> -static void machine_init_notify(Notifier *notifier, void *data)
> +static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
> {
> - Object *machine = qdev_get_machine();
> - ObjectClass *oc = object_get_class(machine);
> - MachineClass *mc = MACHINE_CLASS(oc);
> + MachineState *machine = opaque;
> + MachineClass *mc = MACHINE_GET_CLASS(machine);
> + bool allowed = false;
> + strList *wl;
>
> - if (mc->has_dynamic_sysbus) {
> - /* Our machine can handle dynamic sysbus devices, we're all good */
> - return;
> + for (wl = mc->allowed_dynamic_sysbus_devices;
> + !allowed && wl;
> + wl = wl->next) {
> + allowed |= !!object_dynamic_cast(OBJECT(sbdev), wl->value);
> }
>
> + if (!allowed) {
> + error_report("Option '-device %s' cannot be handled by this machine",
> + object_class_get_name(object_get_class(OBJECT(sbdev))));
> + exit(1);
> + }
> +}
> +
> +static void machine_init_notify(Notifier *notifier, void *data)
> +{
> + MachineState *machine = MACHINE(qdev_get_machine());
> +
> /*
> - * Loop through all dynamically created devices and check whether there
> - * are sysbus devices among them. If there are, error out.
> + * Loop through all dynamically created sysbus devices and check if they are
> + * all allowed. If a device is not allowed, error out.
> */
> - foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
> + foreach_dynamic_sysbus_device(validate_sysbus_device, machine);
> }
>
> HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index d6060043ac..d0b0e5b422 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -299,7 +299,8 @@ static void pc_q35_machine_options(MachineClass *m)
> m->default_machine_opts = "firmware=bios-256k.bin";
> m->default_display = "std";
> m->no_floppy = 1;
> - m->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(m, TYPE_SYS_BUS_DEVICE);
> m->max_cpus = 288;
> }
>
> diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
> index e59e80fb9e..438118c29b 100644
> --- a/hw/ppc/e500plat.c
> +++ b/hw/ppc/e500plat.c
> @@ -15,6 +15,7 @@
> #include "hw/boards.h"
> #include "sysemu/device_tree.h"
> #include "sysemu/kvm.h"
> +#include "hw/sysbus.h"
> #include "hw/pci/pci.h"
> #include "hw/ppc/openpic.h"
> #include "kvm_ppc.h"
> @@ -63,7 +64,8 @@ static void e500plat_machine_init(MachineClass *mc)
> mc->desc = "generic paravirt e500 platform";
> mc->init = e500plat_init;
> mc->max_cpus = 32;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
> }
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index d682f013d4..82040cc5d1 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -3603,7 +3603,8 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
> mc->default_boot_order = "";
> mc->default_ram_size = 512 * M_BYTE;
> mc->kvm_type = spapr_kvm_type;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->pci_allow_0_address = true;
> mc->get_hotplug_handler = spapr_get_hotplug_handler;
> hc->pre_plug = spapr_machine_device_pre_plug;
> diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
> index 0f849a26d2..82380ea9ee 100644
> --- a/hw/xen/xen_backend.c
> +++ b/hw/xen/xen_backend.c
> @@ -564,7 +564,12 @@ static void xen_set_dynamic_sysbus(void)
> ObjectClass *oc = object_get_class(machine);
> MachineClass *mc = MACHINE_CLASS(oc);
>
> - mc->has_dynamic_sysbus = true;
> + /*
> + * Emulate old mc->has_dynamic_sysbus=true assignment
> + *
> + *TODO: add only Xen devices to the list
> + */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> }
>
> int xen_be_register(const char *type, struct XenDevOps *ops)
>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Thanks,
Marcel
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [Qemu-devel] [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices
2017-11-25 15:16 ` [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices Eduardo Habkost
` (2 preceding siblings ...)
2017-11-27 8:39 ` Marcel Apfelbaum
@ 2017-11-28 16:55 ` Marc-André Lureau
2017-11-28 18:34 ` Eduardo Habkost
3 siblings, 1 reply; 9+ messages in thread
From: Marc-André Lureau @ 2017-11-28 16:55 UTC (permalink / raw)
To: Eduardo Habkost
Cc: jgross, Peter Maydell, Thomas Huth, Stefano Stabellini,
Michael S. Tsirkin, QEMU, Alexander Graf, Marcel Apfelbaum,
open list:ARM, open list:sPAPR pseries, Anthony Perard, xen-devel,
Laszlo Ersek, David Gibson
Hi
On Sat, Nov 25, 2017 at 4:16 PM, Eduardo Habkost <ehabkost@redhat.com> wrote:
> The existing has_dynamic_sysbus flag makes the machine accept
> every user-creatable sysbus device type on the command-line.
> Replace it with a list of allowed device types, so machines can
> easily accept some sysbus devices while rejecting others.
>
> To keep exactly the same behavior as before, the existing
> has_dynamic_sysbus=true assignments are replaced with a
> TYPE_SYS_BUS_DEVICE entry on the allowed list. Other patches
> will replace the TYPE_SYS_BUS_DEVICE entries with more specific
> lists of devices.
>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Marcel Apfelbaum <marcel@redhat.com>
> Cc: "Michael S. Tsirkin" <mst@redhat.com>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: David Gibson <david@gibson.dropbear.id.au>
> Cc: Stefano Stabellini <sstabellini@kernel.org>
> Cc: Anthony Perard <anthony.perard@citrix.com>
> Cc: qemu-arm@nongnu.org
> Cc: qemu-ppc@nongnu.org
> Cc: xen-devel@lists.xenproject.org
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
> Changes v1 -> v2:
> * Replace "dynamic sysbus whitelist" with "allowed sysbus devices"
> * Simply add TYPE_SYS_BUS_DEVICE to the list on existing
> has_dynamic_sysbus=true machines, and make machine-types more
> strict in separate patches
> ---
> include/hw/boards.h | 5 ++++-
> hw/arm/virt.c | 3 ++-
> hw/core/machine.c | 43 +++++++++++++++++++++++++++++--------------
> hw/i386/pc_q35.c | 3 ++-
> hw/ppc/e500plat.c | 4 +++-
> hw/ppc/spapr.c | 3 ++-
> hw/xen/xen_backend.c | 7 ++++++-
> 7 files changed, 48 insertions(+), 20 deletions(-)
>
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 156b16f7a6..041bc08971 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -76,6 +76,9 @@ void machine_set_cpu_numa_node(MachineState *machine,
> const CpuInstanceProperties *props,
> Error **errp);
>
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
> +
> +
> /**
> * CPUArchId:
> * @arch_id - architecture-dependent CPU ID of present or possible CPU
> @@ -179,7 +182,6 @@ struct MachineClass {
> no_floppy:1,
> no_cdrom:1,
> no_sdcard:1,
> - has_dynamic_sysbus:1,
> pci_allow_0_address:1,
> legacy_fw_cfg_order:1;
> int is_default;
> @@ -197,6 +199,7 @@ struct MachineClass {
> bool ignore_memory_transaction_failures;
> int numa_mem_align_shift;
> const char **valid_cpu_types;
> + strList *allowed_dynamic_sysbus_devices;
> bool auto_enable_numa_with_memhp;
> void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
> int nb_nodes, ram_addr_t size);
> diff --git a/hw/arm/virt.c b/hw/arm/virt.c
> index 9e18b410d7..fa6dc15fcd 100644
> --- a/hw/arm/virt.c
> +++ b/hw/arm/virt.c
> @@ -1591,7 +1591,8 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
> * configuration of the particular instance.
> */
> mc->max_cpus = 255;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
cosmetic: why do you not leave a space between * and TODO ? (you did
that repeatedly)
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->block_default_type = IF_VIRTIO;
> mc->no_cdrom = 1;
> mc->pci_allow_0_address = true;
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 36c2fb069c..ab2ec292f3 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -335,29 +335,44 @@ static bool machine_get_enforce_config_section(Object *obj, Error **errp)
> return ms->enforce_config_section;
> }
>
> -static void error_on_sysbus_device(SysBusDevice *sbdev, void *opaque)
> +void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type)
> {
> - error_report("Option '-device %s' cannot be handled by this machine",
> - object_class_get_name(object_get_class(OBJECT(sbdev))));
> - exit(1);
> + strList *item = g_new0(strList, 1);
> +
> + item->value = g_strdup(type);
> + item->next = mc->allowed_dynamic_sysbus_devices;
> + mc->allowed_dynamic_sysbus_devices = item;
> }
>
> -static void machine_init_notify(Notifier *notifier, void *data)
> +static void validate_sysbus_device(SysBusDevice *sbdev, void *opaque)
> {
> - Object *machine = qdev_get_machine();
> - ObjectClass *oc = object_get_class(machine);
> - MachineClass *mc = MACHINE_CLASS(oc);
> + MachineState *machine = opaque;
> + MachineClass *mc = MACHINE_GET_CLASS(machine);
> + bool allowed = false;
> + strList *wl;
>
> - if (mc->has_dynamic_sysbus) {
> - /* Our machine can handle dynamic sysbus devices, we're all good */
> - return;
> + for (wl = mc->allowed_dynamic_sysbus_devices;
> + !allowed && wl;
> + wl = wl->next) {
> + allowed |= !!object_dynamic_cast(OBJECT(sbdev), wl->value);
> }
>
> + if (!allowed) {
> + error_report("Option '-device %s' cannot be handled by this machine",
> + object_class_get_name(object_get_class(OBJECT(sbdev))));
> + exit(1);
> + }
> +}
> +
> +static void machine_init_notify(Notifier *notifier, void *data)
> +{
> + MachineState *machine = MACHINE(qdev_get_machine());
> +
> /*
> - * Loop through all dynamically created devices and check whether there
> - * are sysbus devices among them. If there are, error out.
> + * Loop through all dynamically created sysbus devices and check if they are
> + * all allowed. If a device is not allowed, error out.
> */
> - foreach_dynamic_sysbus_device(error_on_sysbus_device, NULL);
> + foreach_dynamic_sysbus_device(validate_sysbus_device, machine);
> }
>
> HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine)
> diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
> index d6060043ac..d0b0e5b422 100644
> --- a/hw/i386/pc_q35.c
> +++ b/hw/i386/pc_q35.c
> @@ -299,7 +299,8 @@ static void pc_q35_machine_options(MachineClass *m)
> m->default_machine_opts = "firmware=bios-256k.bin";
> m->default_display = "std";
> m->no_floppy = 1;
> - m->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(m, TYPE_SYS_BUS_DEVICE);
> m->max_cpus = 288;
> }
>
> diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
> index e59e80fb9e..438118c29b 100644
> --- a/hw/ppc/e500plat.c
> +++ b/hw/ppc/e500plat.c
> @@ -15,6 +15,7 @@
> #include "hw/boards.h"
> #include "sysemu/device_tree.h"
> #include "sysemu/kvm.h"
> +#include "hw/sysbus.h"
> #include "hw/pci/pci.h"
> #include "hw/ppc/openpic.h"
> #include "kvm_ppc.h"
> @@ -63,7 +64,8 @@ static void e500plat_machine_init(MachineClass *mc)
> mc->desc = "generic paravirt e500 platform";
> mc->init = e500plat_init;
> mc->max_cpus = 32;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("e500v2_v30");
> }
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index d682f013d4..82040cc5d1 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -3603,7 +3603,8 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
> mc->default_boot_order = "";
> mc->default_ram_size = 512 * M_BYTE;
> mc->kvm_type = spapr_kvm_type;
> - mc->has_dynamic_sysbus = true;
> + /*TODO: allow only sysbus devices that really work with this machine */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> mc->pci_allow_0_address = true;
> mc->get_hotplug_handler = spapr_get_hotplug_handler;
> hc->pre_plug = spapr_machine_device_pre_plug;
> diff --git a/hw/xen/xen_backend.c b/hw/xen/xen_backend.c
> index 0f849a26d2..82380ea9ee 100644
> --- a/hw/xen/xen_backend.c
> +++ b/hw/xen/xen_backend.c
> @@ -564,7 +564,12 @@ static void xen_set_dynamic_sysbus(void)
> ObjectClass *oc = object_get_class(machine);
> MachineClass *mc = MACHINE_CLASS(oc);
>
> - mc->has_dynamic_sysbus = true;
> + /*
> + * Emulate old mc->has_dynamic_sysbus=true assignment
> + *
> + *TODO: add only Xen devices to the list
> + */
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_SYS_BUS_DEVICE);
> }
>
> int xen_be_register(const char *type, struct XenDevOps *ops)
> --
> 2.13.6
>
>
--
Marc-André Lureau
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Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [Qemu-devel] [PATCH v2 1/6] machine: Replace has_dynamic_sysbus with list of allowed devices
2017-11-28 16:55 ` [Qemu-devel] " Marc-André Lureau
@ 2017-11-28 18:34 ` Eduardo Habkost
0 siblings, 0 replies; 9+ messages in thread
From: Eduardo Habkost @ 2017-11-28 18:34 UTC (permalink / raw)
To: Marc-André Lureau
Cc: jgross, Peter Maydell, Thomas Huth, Stefano Stabellini,
Michael S. Tsirkin, QEMU, Alexander Graf, Marcel Apfelbaum,
open list:ARM, open list:sPAPR pseries, Anthony Perard, xen-devel,
Laszlo Ersek, David Gibson
On Tue, Nov 28, 2017 at 05:55:15PM +0100, Marc-André Lureau wrote:
[...]
> Hi
>
> On Sat, Nov 25, 2017 at 4:16 PM, Eduardo Habkost <ehabkost@redhat.com> wrote:
> > The existing has_dynamic_sysbus flag makes the machine accept
> > every user-creatable sysbus device type on the command-line.
> > Replace it with a list of allowed device types, so machines can
> > easily accept some sysbus devices while rejecting others.
> >
> > To keep exactly the same behavior as before, the existing
> > has_dynamic_sysbus=true assignments are replaced with a
> > TYPE_SYS_BUS_DEVICE entry on the allowed list. Other patches
> > will replace the TYPE_SYS_BUS_DEVICE entries with more specific
> > lists of devices.
> >
> > Cc: Peter Maydell <peter.maydell@linaro.org>
> > Cc: Marcel Apfelbaum <marcel@redhat.com>
> > Cc: "Michael S. Tsirkin" <mst@redhat.com>
> > Cc: Alexander Graf <agraf@suse.de>
> > Cc: David Gibson <david@gibson.dropbear.id.au>
> > Cc: Stefano Stabellini <sstabellini@kernel.org>
> > Cc: Anthony Perard <anthony.perard@citrix.com>
> > Cc: qemu-arm@nongnu.org
> > Cc: qemu-ppc@nongnu.org
> > Cc: xen-devel@lists.xenproject.org
> > Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
>
> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Thanks!
[...]
> > - mc->has_dynamic_sysbus = true;
> > + /*TODO: allow only sysbus devices that really work with this machine */
>
> cosmetic: why do you not leave a space between * and TODO ? (you did
> that repeatedly)
Good question. :)
For reasons I can't explain, I thought "/*TODO:" was more common
than "/* TODO:", but I was mistaken. I will change this to
"/* TODO:" when committing the patches.
--
Eduardo
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^ permalink raw reply [flat|nested] 9+ messages in thread