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machine: replace qemu opts with iommu property 

Fixes a QEMU crash when passing iommu parameter in command line.
Running
    x86_64-softmmu/qemu-system-x86_64 -machine pc,iommu=on -enable-kvm
leads to crash:
    qemu-system-x86_64: qemu/util/qemu-option.c:387: qemu_opt_get_bool_helper:
    Assertion `opt->desc && opt->desc->type == QEMU_OPT_BOOL' failed.
    Aborted (core dumped)

This happens because commit e79d5a6 ("machine: remove qemu_machine_opts global
list") removed the global option descriptions and moved them to MachineState's
QOM properties.

Fix this by querying machine properties through designated wrappers.

Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marcel Apfelbaum 2015-02-04 17:43:48 +02:00 committed by Michael S. Tsirkin
parent 5820945946
commit 8caff63699
3 changed files with 7 additions and 1 deletions
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5
hw/core/machine.c
View File

@ -403,6 +403,11 @@ bool machine_usb(MachineState *machine)
return machine->usb;
}
bool machine_iommu(MachineState *machine)
{
return machine->iommu;
}
static const TypeInfo machine_info = {
.name = TYPE_MACHINE,
.parent = TYPE_OBJECT,

2
hw/pci-host/q35.c
View File

@ -415,7 +415,7 @@ static void mch_realize(PCIDevice *d, Error **errp)
PAM_EXPAN_BASE + i * PAM_EXPAN_SIZE, PAM_EXPAN_SIZE);
}
/* Intel IOMMU (VT-d) */
if (qemu_opt_get_bool(qemu_get_machine_opts(), "iommu", false)) {
if (machine_iommu(current_machine)) {
mch_init_dmar(mch);
}
}

1
include/hw/boards.h
View File

@ -66,6 +66,7 @@ MachineClass *find_default_machine(void);
extern MachineState *current_machine;
bool machine_usb(MachineState *machine);
bool machine_iommu(MachineState *machine);
/**
* MachineClass: