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xen_machine_pv: do not create a dummy CPU in machine->init 

This fixes a regression introduced by:

commit 62fc403f11
Author: Igor Mammedov <imammedo@redhat.com>
Date:   Mon Apr 29 18:54:13 2013 +0200

    target-i386: Attach ICC bus to CPU on its creation

    X86CPU should have parent bus so it could provide bus for child APIC.

The commit makes it mandatory to pass a valid ICC bus to cpu_x86_create,
but cpu_x86_init just passes NULL to it.
xen_machine_pv uses cpu_x86_init, therefore it has been broken.

This patch fixes the problem by removing the dummy CPU creation
altogether from xen_init_pv, relying on the fact that QEMU can now cope
with a machine without an emulated CPU.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
CC: imammedo@redhat.com
CC: qemu-stable@nongnu.org
This commit is contained in:
Stefano Stabellini 2013-06-03 15:38:31 +00:00
parent a7d4207d37
commit 58ee9b0ae0
1 changed files with 0 additions and 16 deletions
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16
hw/i386/xen_machine_pv.c
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@ -23,7 +23,6 @@
*/
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "hw/boards.h"
#include "hw/xen/xen_backend.h"
#include "xen_domainbuild.h"
@ -31,27 +30,12 @@
static void xen_init_pv(QEMUMachineInitArgs *args)
{
const char *cpu_model = args->cpu_model;
const char *kernel_filename = args->kernel_filename;
const char *kernel_cmdline = args->kernel_cmdline;
const char *initrd_filename = args->initrd_filename;
X86CPU *cpu;
CPUState *cs;
DriveInfo *dinfo;
int i;
/* Initialize a dummy CPU */
if (cpu_model == NULL) {
#ifdef TARGET_X86_64
cpu_model = "qemu64";
#else
cpu_model = "qemu32";
#endif
}
cpu = cpu_x86_init(cpu_model);
cs = CPU(cpu);
cs->halted = 1;
/* Initialize backend core & drivers */
if (xen_be_init() != 0) {
fprintf(stderr, "%s: xen backend core setup failed\n", __FUNCTION__);