4.14-stable review patch. If anyone has any objections, please let me know.
------------------ From: Juergen Gross <[email protected]> commit e6111161c0a02d58919d776eec94b313bb57911f upstream. 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: <[email protected]> # 4.11 Signed-off-by: Juergen Gross <[email protected]> Reviewed-by: Boris Ostrovsky <[email protected]> Signed-off-by: Juergen Gross <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- arch/x86/xen/platform-pci-unplug.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/arch/x86/xen/platform-pci-unplug.c +++ b/arch/x86/xen/platform-pci-unplug.c @@ -146,6 +146,10 @@ 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;
