[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] PCI passthrough issue
Hello, Le 25/02/2011 15:40, Konrad Rzeszutek Wilk a écrit : > On Fri, Feb 18, 2011 at 10:14:13PM +0100, Jean Baptiste Favre wrote: >> Hello, >> Back online after my exams :) >> >> Had some time to perform tests with my Debian Squeeze 32bits domU and >> 2.6.37 kernel from experimental. > > I am bit lost now.. Can you refresh my memory whether the 'copy_break' > parameter worked or not? > > Experimental is the stock kernel or was that a new proposed kernel? > Where are the sources for the experimental kernel? > >> DomU config is: >> ***************************************************************** >> kernel = '/cluster/kernels/vmlinuz-2.6.37-trunk-686-bigmem' >> ramdisk = '/cluster/kernels/initrd.img-2.6.37-trunk-686-bigmem' >> #kernel = '/cluster/kernels/vmlinuz-2.6.37-trunk-686-bigmem-sky2' >> #ramdisk = '/cluster/kernels/initrd.img-2.6.37-trunk-686-bigmem-sky2' >> builder = 'linux' >> memory=268 >> vcpus = '1' >> cpus = '2' >> localtime = 0 >> serial = 'pty' >> boot = 'cdn' >> disk = [ 'drbd:xps-106,xvda,w' ] >> on_poweroff = 'destroy' >> on_reboot = 'restart' >> on_crash = 'restart' >> name = 'xps-106' >> hostname = 'xps-106.clichy.jbfavre.org' > > I had a box with a sky2 adapter that looked to have a similar issue but > found the culprit to be the switch. So at this point I am having no luck > reproducing this. Would it be possible for you to stick the kernel + dist > image somewhere so I can try it out on my box? > >> >> extra = "root=/dev/mapper/xps--106-root ro iommu=soft swiotlb=force >> console=hvc0 xencons=tty" > > Try without 'swiotlb=force' on any kernel that is PVOPS. Only the older > ones (lenny) required that. And you don't need 'xencons=tty' either with > PVOPS kernels. Thought I already tried without 'swiotlb=force', but seems not... Just tried it on my Debian domU, and everything works now, whatever copybreak value can be. But trying the same with OpenWRT gives following results: - With 'swiotlb=force': fails for size equal or greater than 128 bytes (or ping -s86) - Without 'swiotlb=force': always fails I can provide OpenWRT disk img and kernel. For Debian domU, I can provide a dd from LVM and kernel. Let me know which ones you want. Regards, JB _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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