linux/arch/x86/lguest
Rusty Russell 55c2d7884e 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>
2015-02-13 17:15:51 +10:30
..
boot.c lguest: don't look in console features to find emerg_wr. 2015-02-13 17:15:51 +10:30
head_32.S lguest: rename i386_head.S 2013-05-20 12:09:40 +09:30
Kconfig x86: Make Linux guest support optional 2013-03-04 13:14:25 -08:00
Makefile lguest: rename i386_head.S 2013-05-20 12:09:40 +09:30