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Re: [Xen-devel] [PATCH] Automatically select 0xe9 as default debug port if configured for Xen

On Sun, Feb 05, 2012 at 12:46:58AM +0000, Julian Pidancet wrote:
> As per Ian comment on previous commit 7123d9834d58287d43514d7799ed1a7b34eea243
> Signed-off-by: Julian Pidancet <julian.pidancet@xxxxxxxxx>
> ---
>  src/Kconfig |    1 +
>  1 files changed, 1 insertions(+), 0 deletions(-)
> diff --git a/src/Kconfig b/src/Kconfig
> index cf0bff0..cee0005 100644
> --- a/src/Kconfig
> +++ b/src/Kconfig
> @@ -361,6 +361,7 @@ menu "Debugging"
>      config DEBUG_IO_PORT
>          depends on DEBUG_IO
>          hex "Debug IO port address"
> +        default 0x00e9 if XEN
>          default 0x0402
>          help
>              Bochs uses the 0x0402 address by default, whereas Xen

Setting of default values doesn't work well when done this way.  To
test, run "make menuconfig" select a build without xen, and run make.
You'll see out/autoconf.h has DEBUG_IO_PORT=0x402.  Then run "make
menuconfig" select xen, and run make.  You'll still see

You can look at VGA_VID in vgasrc/Kconfig for one possible solution to
the above.


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