On 01/08/16 16:06, Artyom Tarasenko wrote:
Good job, Mark! So, now it's possible to boot the PPC and SPARC64 systems from virtio drives, right?
Artyom
That's correct, with one caveat - it seems that the drivers in some of the test Debian 9.0 images don't like QEMU advertising both modern and legacy modes:
./qemu-system-sparc64 -drive file=/home/build/src/qemu/image/sparc64/debian-9.0-sparc64-NETINST-1.iso,if=virtio,media=cdrom,index=0 -nographic -bios /home/build/src/openbios/openbios.git/openbios/obj-sparc64/openbios-builtin.elf.nostrip -m 256
OpenBIOS for Sparc64 open isn't unique. close isn't unique. 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 Aug 1 2016 18:06 Type 'help' for detailed information Trying disk:a... No valid state has been set by load or init-program
0 > boot virtio0:d
(cut)
[ 22.223263] ffe2f1d0: ttyS0 at MMIO 0x1fe020043f8 (irq = 5, base_baud = 115387) is a 16550A [ 22.223905] Console: ttyS0 (SU) [ 22.277730] console [ttyS0] enabled [ 22.297898] mousedev: PS/2 mouse device common for all mice [ 22.321023] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0 [ 22.323433] ledtrig-cpu: registered to indicate activity on CPUs [ 22.332493] NET: Registered protocol family 10 [ 22.356833] mip6: Mobile IPv6 [ 22.357582] NET: Registered protocol family 17 [ 22.358693] mpls_gso: MPLS GSO support [ 22.364318] registered taskstats version 1 [ 22.367031] zswap: loaded using pool lzo/zbud [ 22.378680] rtc-m48t59 rtc-m48t59.0: setting system clock to 2016-08-01 20:14:14 UTC (1470082454) [ 23.527600] random: systemd-udevd urandom read with 0 bits of entropy available [ 26.788885] ne2k-pci.c:v1.03 9/22/2003 D. Becker/P. Gortmaker [ 26.901425] ne2k-pci 0000:00:04.0 eth0: RealTek RTL-8029 found at 0x1fe02008000, IRQ 6, 52:54:00:12:34:56. [ 48.346114] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [systemd-udevd:57] [ 48.347490] Modules linked in: virtio_pci(+) virtio_ring ne2k_pci(+) virtio 8390 [ 48.349833] CPU: 0 PID: 57 Comm: systemd-udevd Not tainted 4.3.0-1-sparc64 #1 Debian 4.3.3-2 [ 48.351288] task: fffff8000f4275e0 ti: fffff8000f55c000 task.ti: fffff8000f55c000 [ 48.352552] TSTATE: 0000009911001600 TPC: 0000000010024274 TNPC: 0000000010024278 Y: 00000000 Not tainted [ 48.355228] TPC: <vp_reset+0x14/0x40 [virtio_pci]> [ 48.356043] g0: 0000000000b04400 g1: 000001ff04800014 g2: fffffffffffb0000 g3: 0000000000000000 [ 48.357446] g4: fffff8000f4275e0 g5: 0000000000332ed0 g6: fffff8000f55c000 g7: 0000000000000001 [ 48.358836] o0: 0000000000000000 o1: 000000001000ad08 o2: fffff8000f55f380 o3: fffff8000f41a880 [ 48.360203] o4: fffff8000f41a888 o5: fffff8000f5ad2c0 sp: fffff8000f55ea41 ret_pc: 0000000000764384 [ 48.361666] RPC: <dev_set_name+0x24/0x40> [ 48.362418] l0: 0000000080000000 l1: 0000001111001607 l2: 0000000010025168 l3: 0000000000000400 [ 48.363788] l4: 0000000000000000 l5: 0000000000000001 l6: 0000000000000000 l7: 0000000000000008 [ 48.365198] i0: fffff8000f516c00 i1: 000000001000ad08 i2: 0000000000000000 i3: 00000000000000d0 [ 48.366586] i4: 0000000000000000 i5: 0000000000000000 i6: fffff8000f55eaf1 i7: 000000001000a4e4 [ 48.368098] I7: <register_virtio_device+0x64/0x100 [virtio]> [ 48.369130] Call Trace: [ 48.369740] [000000001000a4e4] register_virtio_device+0x64/0x100 [virtio] [ 48.370915] [0000000010025820] virtio_pci_probe+0xa0/0x160 [virtio_pci] [ 48.371983] [00000000006eaf40] pci_device_probe+0x80/0x100 [ 48.372879] [000000000076928c] driver_probe_device+0x16c/0x480 [ 48.373829] [0000000000769628] __driver_attach+0x88/0xa0 [ 48.374683] [0000000000766fdc] bus_for_each_dev+0x5c/0xa0 [ 48.375554] [0000000000768c1c] driver_attach+0x1c/0x40 [ 48.376408] [0000000000768710] bus_add_driver+0x1f0/0x2a0 [ 48.377281] [000000000076a114] driver_register+0x74/0x120 [ 48.378162] [00000000006e9894] __pci_register_driver+0x34/0x60 [ 48.379186] [000000001002a018] virtio_pci_driver_init+0x18/0x28 [virtio_pci] [ 48.380328] [0000000000426c58] do_one_initcall+0xb8/0x200 [ 48.381226] [0000000000525200] do_init_module+0x50/0x1f0 [ 48.382091] [00000000004c2514] load_module+0x1c54/0x23c0 [ 48.382953] [00000000004c2e74] SyS_finit_module+0x94/0xe0 [ 48.383843] [00000000004060f4] linux_sparc_syscall+0x34/0x44
Fortunately it is possible to force legacy mode with a bit of QEMU command-line fu in order to get the desired behaviour:
./qemu-system-sparc64 -drive file=/home/build/src/qemu/image/sparc64/debian-9.0-sparc64-NETINST-1.iso,if=none,media=cdrom,id=cd,index=0 -device virtio-blk-pci,disable-modern=on,drive=cd -nographic -bios /home/build/src/openbios/openbios.git/openbios/obj-sparc64/openbios-builtin.elf.nostrip -m 256
OpenBIOS for Sparc64 open isn't unique. close isn't unique. 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 Aug 1 2016 18:06 Type 'help' for detailed information Trying disk:a... No valid state has been set by load or init-program
0 > boot virtio0:d
(cut)
[ 21.749180] ffe2f1d0: ttyS0 at MMIO 0x1fe020043f8 (irq = 5, base_baud = 115387) is a 16550A [ 21.749779] Console: ttyS0 (SU) [ 21.803436] console [ttyS0] enabled [ 21.824159] mousedev: PS/2 mouse device common for all mice [ 21.842179] rtc-m48t59 rtc-m48t59.0: rtc core: registered m48t59 as rtc0 [ 21.844768] ledtrig-cpu: registered to indicate activity on CPUs [ 21.858976] NET: Registered protocol family 10 [ 21.884821] mip6: Mobile IPv6 [ 21.885565] NET: Registered protocol family 17 [ 21.886398] mpls_gso: MPLS GSO support [ 21.892226] registered taskstats version 1 [ 21.894600] zswap: loaded using pool lzo/zbud [ 21.905840] rtc-m48t59 rtc-m48t59.0: setting system clock to 2016-08-01 20:36:46 UTC (1470083806) [ 23.025258] random: systemd-udevd urandom read with 0 bits of entropy available [ 26.240261] ne2k-pci.c:v1.03 9/22/2003 D. Becker/P. Gortmaker [ 26.364453] ne2k-pci 0000:00:04.0 eth0: RealTek RTL-8029 found at 0x1fe02008000, IRQ 6, 52:54:00:12:34:56. [ 26.386623] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 29.109407] ne2k-pci 0000:00:04.0 enp0s4: renamed from eth0 [ 29.118803] vda: vda1 vda2 vda3 vda4 vda5 vda6 vda7 vda8 Starting system log daemon: syslogd, klogd.
Given that transitional/legacy support is complicated enough, I'm quite tempted to rework this to a proper 1.0 driver before commit so the default behaviour "just works" for users.
ATB,
Mark.
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Mark Cave-Ayland