[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] 3GB memory restriction for pv domU with NIC PCI Passthrough
On Thu, Apr 17, 2014 at 10:11:09AM +0800, topperxin wrote: > Hi > We have to use 4.1.5 now. > Is it possible to fix in xen 4.1.5? No. > If possible, could you please tell me how to modify in xen 4.1.5? You would need to backport the 'e820_hole' patches. I did post on the xen-devel at some point an version of them: see http://lists.xen.org/archives/html/xen-devel/2012-03/msg02134.html and http://lists.xen.org/archives/html/xen-devel/2012-03/msg02131.html > Thanks a lot. > At 2014-04-16 21:08:14,"Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> wrote: > >On Wed, Apr 16, 2014 at 10:55:18AM +0800, topperxin wrote: > >> > >> > >> Hi > >> I met the same problem that you have already talked about. > >> I assigned 28 vCPUs , 4G memory, Intel 82599 VF to a PV domU VM. > >> I can not see the intel 82599 VF from lspci. > >> The xen version is 4.1.5 > > > >Right. This is fixed in Xen 4.3. Please try that. > > > >> please refer to the dmesg: > >> ========================================================= > >> [ 3.540273] pcifront pci-0: PCI host bridge to bus 0000:00 > >> [ 3.540280] pci_bus 0000:00: root bus resource [io 0x0000-0xffff] > >> [ 3.540285] pci_bus 0000:00: root bus resource [mem > >> 0x00000000-0x3fffffffffff] > >> [ 3.540291] pci_bus 0000:00: root bus resource [bus 00-ff] > >> [ 3.541343] pci 0000:00:00.3: [8086:10ed] type 00 class 0x020000 > >> [ 3.542147] pci 0000:00:00.3: reg 0x10: [mem 0xdf904000-0xdf907fff > >> 64bit] > >> [ 3.542816] pci 0000:00:00.3: reg 0x1c: [mem 0xdfa04000-0xdfa07fff > >> 64bit] > >> [ 3.545523] pcifront pci-0: New device on 0000:00:00.3 found. > >> [ 3.551644] pcifront pci-0: claiming resource 0000:00:00.3/0 > >> [ 3.551657] pci 0000:00:00.3: address space collision: [mem > >> 0xdf904000-0xdf907fff 64bit] conflicts with System RAM [mem > >> 0x00100000-0xffffffff] > >> [ 3.551662] pcifront pci-0: Could not claim resource 0000:00:00.3/0! > >> Device offline. Try using e820_host=1 in the guest config. > >> [ 3.551682] pcifront pci-0: claiming resource 0000:00:00.3/3 > >> [ 3.551688] pci 0000:00:00.3: address space collision: [mem > >> 0xdfa04000-0xdfa07fff 64bit] conflicts with System RAM [mem > >> 0x00100000-0xffffffff] > >> [ 3.551692] pcifront pci-0: Could not claim resource 0000:00:00.3/3! > >> Device offline. Try using e820_host=1 in the guest config. > >> [ 3.743814] microcode: CPU19 sig=0x206d7, pf=0x1, revision=0x70a > >> [ 3.750305] microcode: CPU20 sig=0x206d7, pf=0x1, revision=0x70a > >> [ 3.756410] microcode: CPU21 sig=0x206d7, pf=0x1, revision=0x70a > >> [ 3.761506] ixgbevf: Intel(R) 10 Gigabit PCI Express Virtual Function > >> Network Driver - version 2.7.12-k > >> [ 3.761513] ixgbevf: Copyright (c) 2009 - 2012 Intel Corporation. > >> [ 3.761650] ixgbevf 0000:00:00.3: device not available (can't reserve > >> [mem 0xdf904000-0xdf907fff 64bit]) > >> [ 3.761684] ixgbevf: probe of 0000:00:00.3 failed with error -22 > >> ========================================================= > >> > >> > >> At 2014-04-15 18:43:30,"Konrad Rzeszutek Wilk" <konrad.wilk@xxxxxxxxxx> > >> wrote: > >> >On Tue, Apr 15, 2014 at 04:15:53PM +0800, topperxin wrote: > >> >> Hi list > >> >> These I'm checking PCI Passthrough to PV domU, and I found when > >> >> the memory larger than 3G, the PCI passthrough will not successfully. I > >> >> got some information from the google. Some guys said it's a bug, and > >> >> has already fixed, Why do I still meet this problem? What should I do? > >> > > >> >It should be fixed. Did you find any issues when doing PCI passthrough? > >> > > >> >> > >> >> > >> >> please refer to : > >> >> > >> >> > >> >> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1673 > >> >> Bug 1673 - 3GB memory restriction for pv domU with PCI > >> >> > >> >> > >> >> Thanks a lot. > >> > > >> >> _______________________________________________ > >> >> Xen-devel mailing list > >> >> Xen-devel@xxxxxxxxxxxxx > >> >> http://lists.xen.org/xen-devel > >> > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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