similar to: Structure of the Xen source code

paging mechanism clarification Hi All, The Xen uses 2 level Paging Mechanism to resolve the Virtual Addresses into frame numbers from domU.The first level is taken care by the MMU for the domU i.e translation from virtual address to the physical address just like normal paging mechanism. The second level of translation is done by the Xen hypervisor.It translates the pseduo physical address

Hi, I have a question about memory page tables in Xen. As far as I understood, every modification to page table will go through Xen(hypervisor). Is it so that all page tables are actually allocated in Xen(hypervisor) instead of guest OS(domain)? Also, is it the case that Xen(hypervisor) needs to maintain a page table for each process running in every domain? Thanks Haifeng

In blkback driver, after I/O requests are submitted to Dom-0 block I/O subsystem, blkback goes to ''sleep'' effectively without letting blkfront know about it (req_event isn''t set appropriately). Hence blkfront doesn''t notify blkback when it submits a new I/O thus delaying the ''dispatch'' of the new I/O to Dom-0 block I/O subsystem. The new I/O is

CC init/version.o LD init/built-in.o LD .tmp_vmlinux1 drivers/built-in.o: In function `vmcoreinfo_show'': /usr/src/linux-2.6.18-xen.hg/drivers/xen/core/xen_sysfs.c:340: undefined reference to `vmcoreinfo_size_xen'' /usr/src/linux-2.6.18-xen.hg/drivers/xen/core/xen_sysfs.c:340: undefined reference to `paddr_vmcoreinfo_xen'' make[4]: ** [.tmp_vmlinux1]

I ran some iperf tests today and it looks like the etherbridge is the limiting factor on throughput. In the beforetime, I saw great throughput to the VMs; over 800 Mbps. With the bridge, the numbers are in the 400s somewhere. Is this the speed I can expect from the bridge? Is there some tuning I should try, or another way to get more bandwidth into the VMs? This is with xen-2.0, 2.4.27-xen0

Hello. Up to version 3.0.4, I did the following to get two xen kernels (dom0 and domU) with my own config: wget http://www.cl.cam.ac.uk/Research/SRG/netos/xen/downloads/... make xen make tools make docs make linux-2.6-xen0-config CONFIGMODE=menuconfig make linux-2.6-xen0-build make linux-2.6-xen0-install make linux-2.6-xen0-dist make linux-2.6-xenU-config CONFIGMODE=menuconfig make

i just ran install.sh from the xen 3.0.2 pre-built distribution. in /boot it put vmlinuz-2.6.16-xen vmlinuz-2.6-xen -> vmlinuz-2.6.16-xen what happened to the xen0 and xenU kernels? also in /boot from xen 3.0.1 is vmlinuz-2.6-xen0 -> vmlinuz-2.6.12.6-xen0 vmlinuz-2.6-xenU -> vmlinuz-2.6.12.6-xenU which is what i expected from xen 3.0.2. don

Hi, I can''t get rid of an annoying domU machines hanging issue with Hyperthreading enabled in my BIOS. Hardware config: IBM x325 series 2 * CPUs Intel Xeon 3.06 Ghz Xen version: 3.0.0 Kernel version: 2.6.12.6 Linux distrib: Debian Sarge 3.1 r1 I run 1 domU machine on my dom0, here is my Xen config: . xen0: /etc/xen/xend-config.sxp : (dom0-num-cpus 0) .

We have tested the latest xen on VT platform with Intel 915/E8500 chipset. Here is the test summary: Issues: - Cannot boot Windows 2000 - Only one CPU is detected in SMP dom0 - Destroying VMX with 4G memory may make xend hang on IA-32e IA-32: + Build&Boot UP xen0 without problem + Can bootup unmodified IA-32 2.4/2.6 linux in VMX domain + Can bootup unmodified IA-32 WindowsXP SP1/SP2

　　We meet a block issue in today''s nightly testing. Xen0 hang when we destroy a XenU guest. Block issue 1) xen0 hang when destroying a XenU guest http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=963 Thanks Yunfeng _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

The first time I installed xen there were two kernels, this time with 3.0.2, there is only one kernel, everything works. I can boot my dom0 and my domU''s using this one kernel but if I want to build a custom kernel for my domU''s but I am not sure from what I read on how to go about it. Will I end up with a new kernel other than my single kernel? Should I do the kernel config in

Hi, Is there any tool out there that can help me analyze a coredump? Thanks, David. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

problem in starting xend I tried to install xen, but got some errors when starting xend. as I logged in and tried to start xend (/etc/init.d/xend start). I just got six-seven dot (.) printed out, then it stops. I looked more closely and found that xend could not start. then I looked at /var/log/xend-debug.log. here is the last few lines: ^^^    Exception starting Xend: no element found:

Hello, please can someone on the list point me to the right direction how to build xen0 and xenU kernels for linux-2.6.27-xen.hg? A make world KERNELS="linux-2.6-xen0 linux-2.6-xenU" leads me to the error: select-linux-arch: x86 select-linux-image: cannot determine Linux image to use for x86 in build-linux-2.6.27-xen0_x86_32 cp: missing destination file operand after

Hi How do I make an initrd for xen. I''m trying to boot rhel3 in fc4, and it keeps getting stuck at Freeing unused kernel memory. I''ve created the device files, but it still doesn''t boot up. I''m pretty sure that the solution lies in makeing an initrd file. Currently my xenU kernel is 2.6.11-1.1369_FC4xen0. Can someone please tell me how to do this? Many

We have test latest xen (ChangeSet 7608) on VT platform with Intel 915 chipset and Here is the test summary: IA32: Build&Boot SMP xen0 without problem Can startup XenU with different configuration IA32 issues contain: VMX can not be created IA32E: Build&Boot SMP xen0 without problem Can startup XenU with different configuration IA32E issues

I am seeing a kernel message, "hdc: lost interrupt", when running LTP on the xen0 domain. The first time I saw the ''kernel: hdc: lost interrupt'' in /var/log/messages, I was running LTP on both xen0 and xenU domains. The xenU domain was totally hung at this point. Suspecting a setup error, I re-checked the installation and reran LTP on xen0 alone, without having

about VIRQ & PIRQ what is VIRQ  ?How VIRQ is different from PIRQ ?How VIRQ & PIRQ are related each other ? DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any

Hi This is a general question has anyone got Xen 3 to work with more than 4GIG of memory installed on there physical machine? I have tried 2 different machines with more than 4 GIG of memory with no success as yet. I can get Xen0 booting no problem, i run service xend start with no problem, i then run xm info and it sees more than 4 gig of memory available. Fantastic up to this point. After

Hi, I just added 32GB memory in my system and wanted Xen to see that memory, so enabled PAE in xen0 and XenU. I did a make menuconfig in xen0 and xenU, then did a make in xen-unstable and a make install. Whilebooting this kernel, I get the above error PAE mode mismatch. I looked under xen/include/asm-x86/processor.h has #define X86_CR4_PAE defined and so does cpufeature.h have this defined.