[Qemu-devel] Re: [PATCH] fix qruncom compilation problems

[Paolo Bonzini <pbonzini@redhat.com>]

On 12/08/2010 10:43 PM, Stefano Bonifazi wrote:
> I've linked qemu-malloc.o and cutils.o together with qruncom.c and I
> managed to succesfully make it!
> here the make line:
>> #$(MAKE) -C ../i386-linux-user libqemu.a
>> $(CC) $(CFLAGS) -fomit-frame-pointer $(LDFLAGS) -I../target-i386 -I..
>> -I../linux-user -I../i386-linux-user -I../fpu \
>> -o $@ ../qemu-malloc.o ../cutils.o $(filter %.c, $^)
>> -L../i386-linux-user -lqemu -lm
>
> Anyway running it with a com file as argument gave the error:
>> mmap: Operation not permitted
> I think the problem is with "MAP_FIXED" parameter in mmap
> (http://opengroup.org/onlinepubs/007908799/xsh/mmap.html) having chosen
> 0x00000000 as starting address.. but it is pretty difficult for me atm
> to understand it, I've never used this function before and I am a
> beginner in these topics
> Removing that parameter mmap succeeds, but then I get "segmentation
> fault" in cpu_init

You have to run it as root I think.

Paolo