diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/xen/platform-pci-unplug.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/x86/xen/platform-pci-unplug.c b/arch/x86/xen/platform-pci-unplug.c index 554c002a1e1..0f456386cce 100644 --- a/arch/x86/xen/platform-pci-unplug.c +++ b/arch/x86/xen/platform-pci-unplug.c @@ -72,13 +72,17 @@ void __init xen_unplug_emulated_devices(void) { int r; + /* user explicitly requested no unplug */ + if (xen_emul_unplug & XEN_UNPLUG_NEVER) + return; /* check the version of the xen platform PCI device */ r = check_platform_magic(); /* If the version matches enable the Xen platform PCI driver. - * Also enable the Xen platform PCI driver if the version is really old - * and the user told us to ignore it. */ + * Also enable the Xen platform PCI driver if the host does + * not support the unplug protocol (XEN_PLATFORM_ERR_MAGIC) + * but the user told us that unplugging is unnecessary. */ if (r && !(r == XEN_PLATFORM_ERR_MAGIC && - (xen_emul_unplug & XEN_UNPLUG_IGNORE))) + (xen_emul_unplug & XEN_UNPLUG_UNNECESSARY))) return; /* Set the default value of xen_emul_unplug depending on whether or * not the Xen PV frontends and the Xen platform PCI driver have @@ -99,7 +103,7 @@ void __init xen_unplug_emulated_devices(void) } } /* Now unplug the emulated devices */ - if (!(xen_emul_unplug & XEN_UNPLUG_IGNORE)) + if (!(xen_emul_unplug & XEN_UNPLUG_UNNECESSARY)) outw(xen_emul_unplug, XEN_IOPORT_UNPLUG); xen_platform_pci_unplug = xen_emul_unplug; } @@ -125,8 +129,10 @@ static int __init parse_xen_emul_unplug(char *arg) xen_emul_unplug |= XEN_UNPLUG_AUX_IDE_DISKS; else if (!strncmp(p, "nics", l)) xen_emul_unplug |= XEN_UNPLUG_ALL_NICS; - else if (!strncmp(p, "ignore", l)) - xen_emul_unplug |= XEN_UNPLUG_IGNORE; + else if (!strncmp(p, "unnecessary", l)) + xen_emul_unplug |= XEN_UNPLUG_UNNECESSARY; + else if (!strncmp(p, "never", l)) + xen_emul_unplug |= XEN_UNPLUG_NEVER; else printk(KERN_WARNING "unrecognised option '%s' " "in parameter 'xen_emul_unplug'\n", p); |