Date: Sat, 28 Apr 2007 17:03:16 +0000
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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