path: root/tools
diff options
authorRusty Russell <rusty@rustcorp.com.au>2015-02-13 17:13:43 +1030
committerRusty Russell <rusty@rustcorp.com.au>2015-02-13 17:15:51 +1030
commit55c2d7884e9a97c2f2d46d5818f783bf3dcc5314 (patch)
tree6291c81f9c5456dff1a1c284f8aa14a851f7e5b1 /tools
parenttools/lguest: don't start devices until DRIVER_OK status set. (diff)
lguest: don't look in console features to find emerg_wr.
The 1.0 spec clearly states that you must set the ACKNOWLEDGE and DRIVER status bits before accessing the feature bits. This is a problem for the early console code, which doesn't really want to acknowledge the device (the spec specifically excepts writing to the console's emerg_wr from the usual ordering constrains). Instead, we check that the *size* of the device configuration is sufficient to hold emerg_wr: at worst (if the device doesn't support the VIRTIO_CONSOLE_F_EMERG_WRITE feature), it will ignore the writes. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions