On Wed, Jan 04, 2012 at 05:19:59PM +0000, Julian Pidancet wrote:
On Sat, Nov 5, 2011 at 2:43 AM, Julian Pidancet julian.pidancet@gmail.com wrote:
When running on Xen, use Xen debug io port as debug output instead of Bochs one.
I'm leery of having multiple "magic" debug ports. Is it possible for Xen to pick up port 0x0402 (or use the qemu style -device isa-debugcon,iobase=0x402 command line option)?
-Kevin
On Thu, Jan 5, 2012 at 12:05 AM, Kevin O'Connor kevin@koconnor.net wrote:
On Wed, Jan 04, 2012 at 05:19:59PM +0000, Julian Pidancet wrote:
On Sat, Nov 5, 2011 at 2:43 AM, Julian Pidancet julian.pidancet@gmail.com wrote:
When running on Xen, use Xen debug io port as debug output instead of Bochs one.
I'm leery of having multiple "magic" debug ports. Is it possible for Xen to pick up port 0x0402 (or use the qemu style -device isa-debugcon,iobase=0x402 command line option)?
Well, I initially thought that 0x402 was a bochs specific debug port. Now I'm not too sure about this any longuer, because I just found in the bochs documentation that 0xe9 can be used as well: http://bochs.sourceforge.net/doc/docbook/user/bochsrc.html (port_e9_hack)
Can you enlighten me as to the origin of the 0x402 port ?
I really doubt picking up a new debug port in xen would be acceptable because 0xe9 has been around for a long time and it would certainly break legacy code.
-
Julian Pidancet -
Kevin O'Connor