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authorJohn Snow <jsnow@redhat.com>2016-01-22 15:51:05 -0500
committerJohn Snow <jsnow@redhat.com>2016-01-25 14:36:01 -0500
commit4812fa27fa75bce89738a82a191755853dd88408 (patch)
tree6e26639d54ebf2ceadb8b60a889f5f87a3a42307 /include/hw
parent62c762504e5d77400e2fefb12e5a9711f8619f3b (diff)
fdc: change auto fallback drive for ISA FDC to 288
The 2.88 drive is more suitable as a default because it can still read 1.44 images correctly, but the reverse is not true. Since there exist virtio-win drivers that are shipped on 2.88 floppy images, this patch will allow VMs booted without a floppy disk inserted to later insert a 2.88MB floppy and have that work. This patch has been tested with msdos, freedos, fedora, windows 8 and windows 10 without issue: if problems do arise for certain guests being unable to cope with 2.88MB drives as the default, they are in the minority and can use type=144 as needed (or insert a proper boot medium and omit type=144/288 or use type=auto) to obtain different drive types. As icing, the default will remain auto/144 for any pre-2.6 machine types, hopefully minimizing the impact of this change in legacy hw to basically zero. Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: John Snow <jsnow@redhat.com> Message-id: 1453495865-9649-13-git-send-email-jsnow@redhat.com
Diffstat (limited to 'include/hw')
-rw-r--r--include/hw/compat.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/hw/compat.h b/include/hw/compat.h
index 491884ba49..2ebe739fcb 100644
--- a/include/hw/compat.h
+++ b/include/hw/compat.h
@@ -3,6 +3,10 @@
#define HW_COMPAT_2_5 \
{\
+ .driver = "isa-fdc",\
+ .property = "fallback",\
+ .value = "144",\
+ },{\
.driver = "pvscsi",\
.property = "x-old-pci-configuration",\
.value = "on",\