[Qemu-devel] Re: [OpenBIOS] [PATCH 0/3] sparc64 cleanups v1

[Igor Kovalenko]

On Thu, May 27, 2010 at 8:57 PM, Mark Cave-Ayland
<address@hidden> wrote:
> Blue Swirl wrote:
>
>> On Tue, May 25, 2010 at 12:12 PM, Igor V. Kovalenko
>> <address@hidden> wrote:
>>>
>>> One code cleanup and another pci host bridge remap change,
>>> the latter requires qemu update with patch already posted to qemu list.
>>>
>>> v0->v1: added missing patch moving asi.h to arch includes
>>
>> Thanks, applied all.
>
> Whilst updating to OpenBIOS SVN and qemu git head to test these patches,
> I've found a regression with qemu-system-sparc64 and
> debian-504-sparc-netinst.iso. Rather than getting to the end of the kernel
> boot and being unable to mount the root filesystem, instead I now get the
> following fatal trap message:
>
>
> [   42.493402] Console: switching to mono PROM 128x96
> [   63.440200] [drm] Initialized drm 1.1.0 20060810
> [   63.542123] su: probe of ffe2dea0 failed with error -12
> [   63.690331] brd: module loaded
> [   63.787034] loop: module loaded
> [   63.863989] Uniform Multi-Platform E-IDE driver
> [   63.961215] ide: Assuming 33MHz system bus speed for PIO modes; override
> with idebus=xx
> [   64.115119] mice: PS/2 mouse device common for all mice
> [   64.234482] usbcore: registered new interface driver usbhid
> [   64.359397] usbhid: v2.6:USB HID core driver
> [   64.462167] TCP cubic registered
> [   64.539714] NET: Registered protocol family 17
> [   64.642969] registered taskstats version 1
> [   64.737822] drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
> qemu: fatal: Trap 0x0068 while trap level (5) >= MAXTL (5), Error state
> pc: 0000000000424d18  npc: 0000000000424d1c
> General Registers:
> %g0-3: 0000000000000000 0000000008000000 0000000000004000 0000000000000002
> %g4-7: 00000000000003ff 0000000000000001 0000000000000020 0000000000004000
>
> Current Register Window:
> %o0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> %o4-7: 0000000000000000 0000000000000000 00000000fffd3ef0 0000000000000000
> %l0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> %l4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> %i0-3: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> %i4-7: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>
> Floating Point Registers:
> %f00: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f04: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f08: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f12: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f16: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f20: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f24: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f28: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f32: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f36: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f40: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f44: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f48: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f52: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f56: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> %f60: 000000000.000000 000000000.000000 000000000.000000 000000000.000000
> pstate: 00000414 ccr: 00 (icc: ---- xcc: ----) asi: 82 tl: 5 pil: 0
> cansave: 6 canrestore: 0 otherwin: 0 wstate: 2 cleanwin: 0 cwp: 7
> fsr: 0000000000000000 y: 0000000000000000 fprs: 0000000000000000
> Aborted
>
>
> Digging deeper, it seems that this was something that was introduced earlier
> than the last set of patches. Reverting to OpenBIOS SVN r777 and using 'git
> bisect', I can identify the offending commit in qemu git as
> 2aae2b8e0abd58e76d616bcbe93c6966d06d0188 "sparc64: fix pstate privilege
> bits". Does that help at all?

With many debian iso images I consistently get scrolling blanks after
the following line on qemu video console:

io sched cfq registered (default)

Please share your qemu command line, and installer prompt input if any.

-- 
Kind regards,
Igor V. Kovalenko