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Add virtio-blk support

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Virtio-blk is a paravirtual block device based on VirtIO.  It can be used by
specifying the if=virtio parameter to the -drive parameter.

When using -enable-kvm, it can achieve very good performance compared to IDE or
SCSI.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5870 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-12-04 19:52:44 +00:00
parent 967f97fa00
commit 6e02c38dad
7 changed files with 346 additions and 5 deletions
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6
vl.c
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@ -2267,7 +2267,10 @@ static int drive_init(struct drive_opt *arg, int snapshot,
} else if (!strcmp(buf, "sd")) {
type = IF_SD;
max_devs = 0;
} else {
} else if (!strcmp(buf, "virtio")) {
type = IF_VIRTIO;
max_devs = 0;
} else {
fprintf(stderr, "qemu: '%s' unsupported bus type '%s'\n", str, buf);
return -1;
}
@ -2474,6 +2477,7 @@ static int drive_init(struct drive_opt *arg, int snapshot,
break;
case IF_PFLASH:
case IF_MTD:
case IF_VIRTIO:
break;
}
if (!file[0])