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From: Nishank Trivedi <nishank.trivedi@netapp.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] host hangs with pci-passthrough of SAS adapter
Date: Mon, 4 Aug 2014 15:13:24 -0700	[thread overview]
Message-ID: <53E00584.2010101@netapp.com> (raw)

Hi,

I'm using QEMU (2.1.50) with Fedora 20 based host (3.15.6-200). While 
doing PCI-passthrough of PMC-Sierra 8001 SAS adapter, the *host* does a 
hard lockup even before guest kernel starts running. BIOS in use is 
SeaBIOS 1.7.5. Despite enabling various debugging options, I do not see 
any messages on the serial console.

The device is detached from host driver and bound to pci-stub, followed 
by this command -
   qemu-system-x86_64 guest.img --enable-kvm -smp 
14,sockets=2,cores=7,threads=1 -nographic -device pci-assign,host=b:d:f

This device works fine with host, similarly other devices I have work 
fine with guest through pci-pt. Any pointers to debug further will be 
greatly appreciated.

Thanks,
nt

             reply	other threads:[~2014-08-04 22:13 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-04 22:13 Nishank Trivedi [this message]
  -- strict thread matches above, loose matches on Subject: below --
2014-08-05  1:13 [Qemu-devel] host hangs with pci-passthrough of SAS adapter Nishank Trivedi

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