On Thu, May 28, 2020 at 01:05:59AM -0600, Jason A. Donenfeld wrote:
> On Thu, May 28, 2020 at 12:15 AM Otto Moerbeek <o...@drijf.net> wrote:
> >
> > On Wed, May 27, 2020 at 11:28:09PM -0600, Jason A. Donenfeld wrote:
> >
> > > Hi Otto,
> > >
> > > On Wed, May 27, 2020 at 4:07 AM Otto Moerbeek <o...@drijf.net> wrote:
> > > > Although I'm not terribly interested in bugs that are only seen (s0
> > > > far) using emulation, please send me the details on how you set up
> > > > qemu.
> > >
> > > Right, it could very well be a TCG bug. But maybe not. Here's how to
> > > get things [not-]working:
> > >
> > > $ qemu-system-sparc64 --version
> > > QEMU emulator version 5.0.0
> > > $ qemu-img convert -O qcow2 miniroot66.fs disk.qcow2
> > > $ qemu-img resize disk.qcow2 20G
> > > $ qemu-system-sparc64 \
> > > -machine sun4u \
> > > -m 1024 \
> > > -drive file=disk.qcow2,if=ide \
> > > -net nic,model=ne2k_pci -net user \
> > > -nographic -serial stdio -monitor none \
> > > -boot c
> > >
> > > OpenBIOS for Sparc64
> > > [...]
> > > Loading FCode image...
> > > Loaded 5840 bytes
> > > entry point is 0x4000
> > > Evaluating FCode...
> > > OpenBSD IEEE 1275 Bootblock 1.4
> > > ..>> OpenBSD BOOT 1.14
> > > Trying bsd...
> > > [...]
> > > OpenBSD 6.6 (RAMDISK) #84: Sat Oct 12 10:42:12 MDT 2019
> > > dera...@sparc64.openbsd.org:/usr/src/sys/arch/sparc64/compile/RAMDISK
> > > [...]
> > > Welcome to the OpenBSD/sparc64 6.6 installation program.
> > > (I)nstall, (U)pgrade, (A)utoinstall or (S)hell?
> > >
> > > If you swap out miniroot66.fs for miniroot67.fs, you'll get the error
> > > I sent prior.
> > >
> > > Jason
> > >
> >
> > Does not work for me, error message on OpenBSD/amd64:
> >
> > Could not allocate dynamic translator buffer
> >
> > ktrace snippet:
> >
> > 74960 qemu-system-spar CALL
> > mmap(0,0x40000000,0x7<PROT_READ|PROT_WRITE|PROT_EX
> > EC>,0x1002<MAP_PRIVATE|MAP_ANON>,-1,0)
> > 74960 qemu-system-spar RET mmap -1 errno 91 Not supported
> >
> > It's doing a RWX mapping, won't fly on OpenBSD.
> >
> > -Otto
>
> This sequence worked fine on my OpenBSD box for reproducing the maybe-bug.
> (See: mount option.) YMMV:
>
> bart ~ # pkg_add git gmake glib2 bison sdl2 gsed bash xz
> [...]
> bart ~ # ftp -o - https://download.qemu.org/qemu-5.0.0.tar.xz | unxz | tar xf
> -
> bart ~ # cd qemu-5.0.0/
> bart ~/qemu-5.0.0 # mkdir build && cd build
> bart ~/qemu-5.0.0/build # ../configure && gmake -j$(sysctl -n hw.ncpu)
> [...]
> bart ~/qemu-5.0.0/build # ftp
> https://cdn.openbsd.org/pub/OpenBSD/6.7/sparc64/miniroot67.fs
> [...]
> bart ~/qemu-5.0.0/build # ./qemu-img convert -O qcow2 miniroot67.fs disk.qcow2
> bart ~/qemu-5.0.0/build # ./qemu-img resize disk.qcow2 20G
> Image resized.
> bart ~/qemu-5.0.0/build # mount
> /dev/sd0a on / type ffs (local, wxallowed)
> bart ~/qemu-5.0.0/build # ./sparc64-softmmu/qemu-system-sparc64 -machine
> sun4u -m 1024 -drive file=disk.qcow2,if=ide -net nic,model=ne2k_pci -net user
> -nographic -serial stdio -monitor none -boot c
> OpenBIOS for Sparc64
> Configuration device id QEMU version 1 machine id 0
> kernel cmdline
> CPUs: 1 x SUNW,UltraSPARC-IIi
> UUID: 00000000-0000-0000-0000-000000000000
> Welcome to OpenBIOS v1.1 built on Oct 28 2019 17:08
> Type 'help' for detailed information
> Trying disk:a...
> Not a bootable ELF image
> Not a bootable a.out image
> Loading FCode image...
> Loaded 6882 bytes
> entry point is 0x4000
> Evaluating FCode...
> OpenBSD IEEE 1275 Bootblock 2.0
> ..reserved fcode word.
> Unhandled Exception 0x0000000000000030
> PC = 0x00000000ffd0f3ac NPC = 0x00000000ffd0f3b0
> Stopping execution
>
> Jason
>
Of course.., I was running it from a !wxallowed mount. BTW, qemu is in
packages, no need to build it yourself.
-Otto
