RE: [Qemu-devel] question in linux's printk in qemu and vga console err

[tang peilei]

> From: "tang peilei" <address@hidden>
> Reply-To: address@hidden
> To: address@hidden
> Subject: [Qemu-devel] question in linux's printk in qemu and vga console 
err
> Date: Sat, 28 Apr 2007 12:19:02 +0000
>
> i build a linux 2-6.16 kernel image, and use it to run in qemu.
> but it have some problems when it runs.
>
> 1:the console's config(kernel config) can only be dummy console , 
> can not be vga console ,if i choose vga console ,it will fails in 
> console_init function.
>
> 2:it can print message like putstr("Uncompressing Linux...");
> but when it run in start_kernel, it use printk to print message, the 
> message can not be found in qemu.
> my kernel config did not choose vga console ,but choosed dummy 
> console, is this made printk did not work ???

i found that dummy console can not display printk messages.
but in qemu, there is also some serial port , it should also useful for 
"printk".
i found there is some serial drivers in linux2.6
i do not konw what should be compiled for qemu's serial, who konws?
if i compiled them all , qemu will crash when this kernel image runs.


> who konws what is wrong ?? and how to deal with it ???
>
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