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| author | Takashi Iwai <tiwai@suse.de> | 2010-08-18 15:17:30 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2010-08-18 15:17:30 +0200 |
| commit | 6ab561c8aab2e4af535f09adbc6253f958536848 (patch) | |
| tree | 37846adb4ea106485720d113e252d71d615c23ed /drivers/block/xen-blkfront.c | |
| parent | 4f4e8f69895c8696a4bcc751817d4b186023ac44 (diff) | |
| parent | cbaa9f60d5d5c3af10f94e0d49789d5b82341a4a (diff) | |
Merge branch 'topic/isa' into topic/misc
Diffstat (limited to 'drivers/block/xen-blkfront.c')
| -rw-r--r-- | drivers/block/xen-blkfront.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c index 82ed403147c..f63ac3d1f8a 100644 --- a/drivers/block/xen-blkfront.c +++ b/drivers/block/xen-blkfront.c @@ -48,6 +48,7 @@ #include <xen/grant_table.h> #include <xen/events.h> #include <xen/page.h> +#include <xen/platform_pci.h> #include <xen/interface/grant_table.h> #include <xen/interface/io/blkif.h> @@ -737,6 +738,35 @@ static int blkfront_probe(struct xenbus_device *dev, } } + if (xen_hvm_domain()) { + char *type; + int len; + /* no unplug has been done: do not hook devices != xen vbds */ + if (xen_platform_pci_unplug & XEN_UNPLUG_IGNORE) { + int major; + + if (!VDEV_IS_EXTENDED(vdevice)) + major = BLKIF_MAJOR(vdevice); + else + major = XENVBD_MAJOR; + + if (major != XENVBD_MAJOR) { + printk(KERN_INFO + "%s: HVM does not support vbd %d as xen block device\n", + __FUNCTION__, vdevice); + return -ENODEV; + } + } + /* do not create a PV cdrom device if we are an HVM guest */ + type = xenbus_read(XBT_NIL, dev->nodename, "device-type", &len); + if (IS_ERR(type)) + return -ENODEV; + if (strncmp(type, "cdrom", 5) == 0) { + kfree(type); + return -ENODEV; + } + kfree(type); + } info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) { xenbus_dev_fatal(dev, -ENOMEM, "allocating info structure"); |