On Wed, Mar 06, 2013 at 07:53:51PM -0500, Kevin O'Connor wrote:
On Thu, Mar 07, 2013 at 12:12:08AM +0100, Aurelien Jarno wrote:
On Wed, Mar 06, 2013 at 08:21:11AM +0000, Dietmar Maurer wrote:
Using qemu 1.4.0:
# qemu -hda test.raw -m 512 -cdrom pfSense-LiveCD-2.0.2-RELEASE-amd64-20121207-2239.iso
Results in:
trap 12: page fault while in kernel mode ... stopped at x86bios_emu_rdw+0x2f: movzwl (%rbx),%eax
Any ideas? Can somebody reproduce that?
To get the FreeBSD VM boot use the console, enter the boot loader, then: # set hint.atkbd.0.disabled="1" # boot
But that disables the keyboard.
I was actually digging about that problem. It is indeed present in version 1.4.0, but is fixed in the current git master. The problem is actually not directly in QEMU but in seabios, the update to version 1.7.2.1 commit 5c75fb10) fixes the issue. Maybe it is worth cherry-picking it into stable-1.4 (hence the Cc:). In the meantime using bios.bin from master with QEMU version 1.4.0 should also fix the issue.
What is strange is the seabios commit fixing the issue:
commit 4219149ad2b783abfa61e80e9e9f6910db0c76c9 Author: Kevin O'Connor <kevin@koconnor.net> Date: Sun Feb 17 10:56:10 2013 -0500 build: Don't require $(OUT) to be a sub-directory of the main directory.That change is definitely just build related - I don't see how it could impact the final SeaBIOS binary. How did you conclude that this commit is what fixes the issue?
I did a git bisect to find the commit fixing the issue. Then, as I was not believing the result, I tried the following sequence a dozen of times (for some unknown reasons the FreeBSD install CD doesn't exhibit the issue, so I used the Debian GNU/kFreeBSD installer):
| mkdir qemu-freebsd-bug | cd qemu-freebsd-bug | | wget http://ftp.debian.org/debian/dists/squeeze/main/installer-kfreebsd-amd64/cur... | | git clone git://git.qemu.org/qemu.git | cd qemu | git checkout -b stable-1.4 v1.4.0 | ./configure --target-list=x86_64-softmmu | make | cd .. | | git clone git://git.seabios.org/seabios.git | cd seabios | git checkout -b 1.7.2-stable origin/1.7.2-stable | git reset --hard 4219149ad2b783abfa61e80e9e9f6910db0c76c9 | make | cp out/bios.bin ../qemu/pc-bios | cd.. | | # debian-installer boots correctly | ./qemu/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -cdrom mini.iso | | cd seabios | git reset --hard d75c22fcb6521dad11428b65789d92f89675c600 | git clean -fdx | make | cp out/bios.bin ../qemu/pc-bios | cd .. | | # debian-installer fails to boot | ./qemu/x86_64-softmmu/qemu-system-x86_64 -enable-kvm -cdrom mini.iso
Maybe I am doing something wrong or there is a bug in my toolchain (Debian Sid). It would be nice if someone could try to reproduce that on another distro/system.