Commit e6111161 authored Oct 25, 2018 by Juergen Gross

xen/pvh: don't try to unplug emulated devices



A Xen PVH guest has no associated qemu device model, so trying to
unplug any emulated devices is making no sense at all.

Bail out early from xen_unplug_emulated_devices() when running as PVH
guest. This will avoid issuing the boot message:

[    0.000000] Xen Platform PCI: unrecognised magic value

Cc: <stable@vger.kernel.org> # 4.11
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>

parent 769d6bfc

arch/x86/xen/platform-pci-unplug.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -134,6 +134,10 @@ void xen_unplug_emulated_devices(void)
		{
		int r;

		/* PVH guests don't have emulated devices. */
		if (xen_pvh_domain())
		return;

		/* user explicitly requested no unplug */
		if (xen_emul_unplug & XEN_UNPLUG_NEVER)
		return;