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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH 13/16] xen: convert "-machine igd-passthru" to an accelerator property
On Wed, 13 Nov 2019 at 14:53, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> The first machine property to fall is Xen's Intel integrated graphics
> passthrough. The "-machine igd-passthru" option does not set anymore
> a property on the machine object, but desugars to a GlobalProperty on
> accelerator objects.
>
> The setter is very simple, since the value ends up in a
> global variable, so this patch also provides an example before the more
> complicated cases that follow it.
>
> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Did something go wrong with get_maintainers here? The Xen maintainers
ought to have been cc-ed. The Xen toolstack will require consequent
modification.
Cc-ing (rest of) Xen maintainers and xen-devel manually.
Paul
> ---
> hw/core/machine.c | 20 --------------------
> hw/xen/xen-common.c | 16 ++++++++++++++++
> include/hw/boards.h | 1 -
> qemu-options.hx | 9 +++++----
> vl.c | 14 ++++----------
> 5 files changed, 25 insertions(+), 35 deletions(-)
>
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index 45ddfb6..d7a0356 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -412,20 +412,6 @@ static void machine_set_graphics(Object *obj, bool
> value, Error **errp)
> ms->enable_graphics = value;
> }
>
> -static bool machine_get_igd_gfx_passthru(Object *obj, Error **errp)
> -{
> - MachineState *ms = MACHINE(obj);
> -
> - return ms->igd_gfx_passthru;
> -}
> -
> -static void machine_set_igd_gfx_passthru(Object *obj, bool value, Error
> **errp)
> -{
> - MachineState *ms = MACHINE(obj);
> -
> - ms->igd_gfx_passthru = value;
> -}
> -
> static char *machine_get_firmware(Object *obj, Error **errp)
> {
> MachineState *ms = MACHINE(obj);
> @@ -862,12 +848,6 @@ static void machine_class_init(ObjectClass *oc, void
> *data)
> object_class_property_set_description(oc, "graphics",
> "Set on/off to enable/disable graphics emulation", &error_abort);
>
> - object_class_property_add_bool(oc, "igd-passthru",
> - machine_get_igd_gfx_passthru, machine_set_igd_gfx_passthru,
> - &error_abort);
> - object_class_property_set_description(oc, "igd-passthru",
> - "Set on/off to enable/disable igd passthrou", &error_abort);
> -
> object_class_property_add_str(oc, "firmware",
> machine_get_firmware, machine_set_firmware,
> &error_abort);
> diff --git a/hw/xen/xen-common.c b/hw/xen/xen-common.c
> index 5284b0d..6cba30c 100644
> --- a/hw/xen/xen-common.c
> +++ b/hw/xen/xen-common.c
> @@ -124,6 +124,16 @@ static void xen_change_state_handler(void *opaque, int
> running,
> }
> }
>
> +static bool xen_get_igd_gfx_passthru(Object *obj, Error **errp)
> +{
> + return has_igd_gfx_passthru;
> +}
> +
> +static void xen_set_igd_gfx_passthru(Object *obj, bool value, Error **errp)
> +{
> + has_igd_gfx_passthru = value;
> +}
> +
> static void xen_setup_post(MachineState *ms, AccelState *accel)
> {
> int rc;
> @@ -177,6 +187,12 @@ static void xen_accel_class_init(ObjectClass *oc, void
> *data)
> ac->compat_props = g_ptr_array_new();
>
> compat_props_add(ac->compat_props, compat, G_N_ELEMENTS(compat));
> +
> + object_class_property_add_bool(oc, "igd-passthru",
> + xen_get_igd_gfx_passthru, xen_set_igd_gfx_passthru,
> + &error_abort);
> + object_class_property_set_description(oc, "igd-passthru",
> + "Set on/off to enable/disable igd passthrou", &error_abort);
> }
>
> #define TYPE_XEN_ACCEL ACCEL_CLASS_NAME("xen")
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 36fcbda..cdcf481 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -287,7 +287,6 @@ struct MachineState {
> bool mem_merge;
> bool usb;
> bool usb_disabled;
> - bool igd_gfx_passthru;
> char *firmware;
> bool iommu;
> bool suppress_vmdesc;
> diff --git a/qemu-options.hx b/qemu-options.hx
> index 3931f90..5b43a83 100644
> --- a/qemu-options.hx
> +++ b/qemu-options.hx
> @@ -37,7 +37,6 @@ DEF("machine", HAS_ARG, QEMU_OPTION_machine, \
> " kvm_shadow_mem=size of KVM shadow MMU in bytes\n"
> " dump-guest-core=on|off include guest memory in a core
> dump (default=on)\n"
> " mem-merge=on|off controls memory merge support
> (default: on)\n"
> - " igd-passthru=on|off controls IGD GFX passthrough
> support (default=off)\n"
> " aes-key-wrap=on|off controls support for AES key
> wrapping (default=on)\n"
> " dea-key-wrap=on|off controls support for DEA key
> wrapping (default=on)\n"
> " suppress-vmdesc=on|off disables self-describing
> migration (default=off)\n"
> @@ -71,8 +70,6 @@ more than one accelerator specified, the next one is used
> if the previous one
> fails to initialize.
> @item kernel_irqchip=on|off
> Controls in-kernel irqchip support for the chosen accelerator when available.
> -@item gfx_passthru=on|off
> -Enables IGD GFX passthrough support for the chosen machine when available.
> @item vmport=on|off|auto
> Enables emulation of VMWare IO port, for vmmouse etc. auto says to select the
> value based on accel. For accel=xen the default is off otherwise the default
> @@ -118,8 +115,9 @@ Select CPU model (@code{-cpu help} for list and
> additional feature selection)
> ETEXI
>
> DEF("accel", HAS_ARG, QEMU_OPTION_accel,
> - "-accel [accel=]accelerator[,thread=single|multi]\n"
> + "-accel [accel=]accelerator[,prop[=value][,...]]\n"
> " select accelerator (kvm, xen, hax, hvf, whpx or tcg;
> use 'help' for a list)\n"
> + " igd-passthru=on|off (enable Xen integrated Intel
> graphics passthrough, default=off)\n"
> " tb-size=n (TCG translation block cache size)\n"
> " thread=single|multi (enable multi-threaded TCG)\n",
> QEMU_ARCH_ALL)
> STEXI
> @@ -130,6 +128,9 @@ kvm, xen, hax, hvf, whpx or tcg can be available. By
> default, tcg is used. If th
> more than one accelerator specified, the next one is used if the previous one
> fails to initialize.
> @table @option
> +@item igd-passthru=on|off
> +When Xen is in use, this option controls whether Intel integrated graphics
> +devices can be passed through to the guest (default=off)
> @item tb-size=@var{n}
> Controls the size (in MiB) of the TCG translation block cache.
> @item thread=single|multi
> diff --git a/vl.c b/vl.c
> index 06c6ad9..7d8fed1 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -1256,13 +1256,6 @@ static void configure_msg(QemuOpts *opts)
> }
>
>
> -/* Now we still need this for compatibility with XEN. */
> -bool has_igd_gfx_passthru;
> -static void igd_gfx_passthru(void)
> -{
> - has_igd_gfx_passthru = current_machine->igd_gfx_passthru;
> -}
> -
> /***********************************************************/
> /* USB devices */
>
> @@ -2645,6 +2638,10 @@ static int machine_set_property(void *opaque,
> if (g_str_equal(qom_name, "accel")) {
> return 0;
> }
> + if (g_str_equal(qom_name, "igd-passthru")) {
> + object_register_sugar_prop(ACCEL_CLASS_NAME("xen"), qom_name, value);
> + return 0;
> + }
>
> r = object_parse_property_opt(opaque, name, value, "type", errp);
> g_free(qom_name);
> @@ -4449,9 +4446,6 @@ int main(int argc, char **argv, char **envp)
> exit(1);
> }
>
> - /* Check if IGD GFX passthrough. */
> - igd_gfx_passthru();
> -
> /* init generic devices */
> rom_set_order_override(FW_CFG_ORDER_OVERRIDE_DEVICE);
> qemu_opts_foreach(qemu_find_opts("device"),
> --
> 1.8.3.1
>
>
>
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