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xen-platform: Replace assert() with appropriate error reporting

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Commit dbb7405d8caad0814ceddd568cb49f163a847561 made it possible to
trigger an assert using "-device xen-platform". Replace it with
appropriate error reporting.

Before:

  $ qemu-system-x86_64 -device xen-platform
  qemu-system-x86_64: hw/i386/xen/xen_platform.c:391: xen_platform_initfn: Assertion `xen_enabled()' failed.
  Aborted (core dumped)
  $

After:

  $ qemu-system-x86_64 -device xen-platform
  qemu-system-x86_64: -device xen-platform: xen-platform device requires the Xen accelerator
  $

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This commit is contained in:
Eduardo Habkost 2015-10-21 13:46:50 -02:00 committed by Stefano Stabellini
parent 4098d49db5
commit b1ecd51bdb
1 changed files with 5 additions and 1 deletions
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6
hw/i386/xen/xen_platform.c
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@ -33,6 +33,7 @@
#include "trace.h"
#include "exec/address-spaces.h"
#include "sysemu/block-backend.h"
#include "qemu/error-report.h"
#include <xenguest.h>
@ -388,7 +389,10 @@ static void xen_platform_realize(PCIDevice *dev, Error **errp)
uint8_t *pci_conf;
/* Device will crash on reset if xen is not initialized */
assert(xen_enabled());
if (!xen_enabled()) {
error_setg(errp, "xen-platform device requires the Xen accelerator");
return;
}
pci_conf = dev->config;