On Thu Aug 09, 2012 at 13:50:25 +0000, Markus Pfeiffer wrote:
Dear Adam,
On Thu, Aug 09, 2012 at 03:33:16PM +0200, Adam Lackorzynski wrote:
Hi,
On Wed Aug 08, 2012 at 11:35:20 +0000, Markus Pfeiffer wrote:
I tried building the Fiasco kernel (x86_64, from svn) together with the hello demo inside a qemu as it is shown on the website under "Getting started".
Unfortunately the kernel traps while booting (Unexpected trap while booting Fiasco). The trap number seems to be invalid (-8029759185026510704). Any pointers towards where to look for a fix?
Works for me. The website uses 32 bit Qemu ('qemu'), did you use qemu-system-x86_64?
Yes, I am running on archlinux 64 bit, I also tried qemu alone and different options for -cpu and -machine. GCC version is 4.7.1 and qemu version is 1.1.1.
I tried narrowing the problem down and found that the problem seems to be that Cpu::boot_cpu() returns NULL in kernel_main in main-ia32-64.cpp, So I would suspect that this is due to some weird thing in the build toolchain going wrong and not calling the constructors of Cpu or Per_cpu correctly.
I just tried it with a recent post 4.7.1 build (4.7.2) and it worked. Could you try a different gcc to check this possiblity (e.g. some other distribution in a chroot)?
Adam