From: Laszlo Ersek <lersek@redhat.com>
To: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
Subject: Re: 2.6.38 (FC15) with PCI passthrough fails mysteriously with iommu=soft..
Date: Thu, 02 Jun 2011 09:42:38 +0200 [thread overview]
Message-ID: <4DE73EEE.3030503@redhat.com> (raw)
In-Reply-To: <20110601181317.GA2455@dumpdata.com>
On 06/01/11 20:13, Konrad Rzeszutek Wilk wrote:
> It probably was panicing b/c it couldn't swizzle out 64MB
> of DMA32 memory. You can find that out if you do 'earlyprintk=xenboot' and
> that should print out the bootlog in your Xen debug console (if you have
> configured guest_loglvl=all).
That seems to be it.
[52124.668662] Kernel panic - not syncing: DMA(-12): Failed to exchange pages allocated for DMA with Xen! We either don't have the permission or you do not have enoughfree memory under 4GB!
[52124.668664]
[52124.668677] Pid: 0, comm: swapper Not tainted 2.6.38.6-26.rc1.fc15.x86_64 #1
[52124.668681] Call Trace:
[52124.668691] [<ffffffff8146c72c>] panic+0x91/0x19c
[52124.668698] [<ffffffff81006c3f>] ? xen_restore_fl_direct_end+0x0/0x1
[52124.668704] [<ffffffff81b8f8e6>] xen_swiotlb_init+0xf9/0x131
[52124.668711] [<ffffffff81b6a040>] ? pci_swiotlb_late_init+0x0/0x29
[52124.668717] [<ffffffff8147dfae>] ? _etext+0x0/0x2
[52124.668724] [<ffffffff81b5d6d1>] pci_xen_swiotlb_init+0x17/0x29
[52124.668730] [<ffffffff81b5fe00>] pci_iommu_alloc+0x57/0x6e
[52124.668736] [<ffffffff81b6db7e>] mem_init+0x19/0xec
[52124.668741] [<ffffffff81b58a3d>] start_kernel+0x200/0x3fe
[52124.668746] [<ffffffff81b582c4>] x86_64_start_reservations+0xaf/0xb3
[52124.668752] [<ffffffff81b5bd1b>] xen_start_kernel+0x59c/0x5a3
Thanks!
lacos
next prev parent reply other threads:[~2011-06-02 7:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-01 10:05 [RFC PATCH linux-2.6.18-xen] pciback: clean up (MSI-X vec, entrynr) list when resetting PCI device Laszlo Ersek
2011-06-01 11:02 ` Laszlo Ersek
2011-06-01 14:31 ` Konrad Rzeszutek Wilk
2011-06-01 16:18 ` Paolo Bonzini
2011-06-01 17:32 ` Laszlo Ersek
2011-06-01 18:13 ` 2.6.38 (FC15) with PCI passthrough fails mysteriously with iommu=soft Konrad Rzeszutek Wilk
2011-06-02 7:42 ` Laszlo Ersek [this message]
2011-06-02 20:49 ` Pasi Kärkkäinen
2011-06-01 12:56 ` [RFC PATCH linux-2.6.18-xen] pciback: clean up (MSI-X vec, entrynr) list when resetting PCI device Jan Beulich
2011-06-01 14:12 ` Laszlo Ersek
2011-06-01 14:59 ` Jan Beulich
2011-06-01 15:27 ` Laszlo Ersek
2011-06-01 16:07 ` Jan Beulich
2011-06-01 16:25 ` Andrew Jones
2011-06-01 16:27 ` Paolo Bonzini
2011-06-01 16:16 ` Paolo Bonzini
2011-06-01 14:51 ` Konrad Rzeszutek Wilk
2011-06-01 15:01 ` Konrad Rzeszutek Wilk
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