Messages in this thread | | | Date | Sun, 11 Aug 2013 23:04:50 +0100 | From | Russell King - ARM Linux <> | Subject | Re: SCSI bus failures with qemu-arm in kernel 3.8+ |
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On Sun, Aug 11, 2013 at 08:54:43AM -0700, Guenter Roeck wrote: > Hi, > > trying to boot arm versatile images with qemu results in the following error > if I try to boot with a disk image. > > sym0: <895a> rev 0x0 at pci 0000:00:0d.0 irq 92 > sym0: SCSI BUS has been reset. > scsi0 : sym-2.2.3 > [...] > scsi 0:0:0:0: ABORT operation started > scsi 0:0:0:0: ABORT operation timed-out. > [...] > > Yocto's 3.8 kernel images work, upstream kernels 3.8 and later fail > (I did not check if/how earlier kernels are affected). > > Tracking this down shows that the problem is known and has been fixed with > commit 351d1339 (arm: add dummy swizzle for versatile with qemu) in the > Yocto 3.8 kernel at git://git.yoctoproject.org/linux-yocto-3.8. > > Would it be possible to submit this patch for inclusion into affected upstream kernels ?
It could be that it's qemu's PCI routing is wrong - it's not the first time that qemu has got something wrong.
Unfortunately, the PCI routing is totally undocumented, and as I understand it, there's very few backplanes out there now that finding out their real routing is virtually impossible. I'm loathed to change it unless someone can point to a definitive source of information on this.
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