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i440fx: print an error message if user tries to enable iommu 

There's no indication of any sort that i440fx doesn't support
"iommu=on"

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Bandan Das <bsd@redhat.com>
This commit is contained in:
Bandan Das 2015-11-13 01:55:48 -05:00 committed by Michael S. Tsirkin
parent 1f8431f42d
commit 8d211f622b
1 changed files with 5 additions and 0 deletions
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5
hw/pci-host/piix.c
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@ -34,6 +34,7 @@
#include "sysemu/sysemu.h"
#include "hw/i386/ioapic.h"
#include "qapi/visitor.h"
#include "qemu/error-report.h"
/*
* I440FX chipset data sheet.
@ -301,6 +302,10 @@ static void i440fx_pcihost_realize(DeviceState *dev, Error **errp)
static void i440fx_realize(PCIDevice *dev, Error **errp)
{
dev->config[I440FX_SMRAM] = 0x02;
if (object_property_get_bool(qdev_get_machine(), "iommu", NULL)) {
error_report("warning: i440fx doesn't support emulated iommu");
}
}
PCIBus *i440fx_init(const char *host_type, const char *pci_type,