similar to: Help! How to use event channel and Shared Memory in Xen!

Hi, Could anybody send me some code samples about how to use event channel (Dom0 and DomU, xenstore) and shared memory(grant table)? thanks a lot. Danius ========================================================================= _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com

Hi: I wanna write code about sharing memory between dom0 and domU, and I decide to use void *xc_map_foreign_range(int xc_handle, unint32_t dom, int size, int port, unsigned long mfn) (this is a function in xenctl.h). My question is : If I wanna map a range of memory in dom0 to domU, how can I　get the value of mfn? and I do not know the port here. Can anybody help me ? Thanks .

Hi: I wanna domU to map dom0''s page, so that these two domain can receive/send data between them in the future. But when I run my code , it told me that "Could not open grant table interface(22=invalid argument)". Can anybody know what the problem is ? Thanks . Danius Wu. ====== The Result of running my codes: [root@vm1 program]# gcc -g -Wall

Hi: There is a code sample in <The Definite Guide to the Xen Hypervisor>, chapter 4, "Using Grant Tables". The code sample is as following: #include <public/xen.h> extern void * shared_page; extern grant_entry_t * grant_table; void offer_page() { uint16_t flags; /* create the grant table*/ gnttab_setup_table_t setup_op;

In <Xen In seterface Manual>, chapter 5 Event Channels, they say that:"Event Notifications can be masked by setting a flag; this is equivalent to disabling interrupts and can be used to ensure atomicity of certain operation in the guest kernel". My question is : I know that we can use ''xc_evtchn_unmask(xcehandle, port)'' to unmask an event channel , but I can not

Hi, For each domUs there is unique shared memory(2-way circular queue) and event-channel(one shared memory and event-channel per domU) or there is only one shared memory and interdomain event-channel(for every DomU)? regards: Amit _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi,Olaf, I have some questions about event channel in Xenpaging to ask you. 1) In xenpaging it uses Inter-Domainain Commnication (IDC) between dom0 and domU to build bidirectional connection,but I found there is only an event channel notification from xen to dom0 when page faults happens.It seems that xenpaging_resume_page()->xc_evtchn_notify() doesn''t make any difference.So why

Package: xen-utils-common Version: 4.0.0-1 Severity: important The script /etc/xen/scripts/block contains an error in the part which is checking the sharing of the already created loop devices. This error leads in the case of somespecific file inode values to the wrong report of the loop device as being already used and causes then the domain could not be started with such device at all, there

Dear Community, i have a problem with a new debian XEN 64bit squeeze Server, when i started a windows hvm domU. I tested with the routed and now in the bridge network mod. I start the domU with xm create win.cfg and 1 or 2 second the dom0 is reboot. I install a debian domU on the system, and this is without any problems in routed and bridge mod. In the logfile are no informations, in the routed

I am new to Xen and want to provide simple communication between my DomU and Dom0 environments. I just need to be able to pass a few bytes of information back and forth between DomU and Dom0 while using some form of event management to know when an update occurs so I can act on it. At first, it appeared that using XenBus and XenStore might be the right solution for this. However, after looking

I just installed xen-linux-system-2.6.26-1-xen-amd64 2.6.26-7 on a freshly installed Debian Lenny AMD64 system, and when I create a Debian Lenny DomU with xen-tools I cannot attach to a console nor log in with SSH. When running # xm create -c test.cfg the system starts booting, but it seems to "freeze" after the kernel has booted. Googling a bit, shows that I seem to have the problem

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Xen Security Advisory XSA-57 version 3 libxl allows guest write access to sensitive console related xenstore keys UPDATES IN VERSION 3 ==================== Public release. ISSUE DESCRIPTION ================= The libxenlight (libxl) toolstack library does not correctly set permissions on

The Department of Statistics and Mathematics at the Vienna University of Economics and Business Administration invites applications for two new faculty positions in computational statistics and quantitative research methodology, to begin in fall 2005. The positions will be at the Assistant level. Candidates should have a strong potential for statistical computing or intramural research support

qemu-xen: ignore console disconnect events for console/0 The first console has a different location compared to other PV devices (console, rather than device/console/0) and doesn''t obey the xenstore state protocol. We already special case the first console in con_init and con_initialise, we should also do it in con_disconnect. This patch should be applied to 4.1 too. Signed-off-by:

Package: xen-utils-common Version: 4.0.0-1 Severity: normal A strange issue, when deploying Xen using Puppet, /etc/udev/rules.d/xend.rules and /etc/udev/rules.d/xen-backend.rules files are empty. Specifically, the symlinks point to ../xend.rules and ../xen-backend.rules respectively in /etc/udev, but neither of those files exist. Manually copying those files from another host that was not

Package: xen-utils-common Version: 3.3.1-1 Severity: grave Justification: renders package unusable -- System Information: Debian Release: squeeze/sid APT prefers testing APT policy: (500, 'testing'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.26-2-xen-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh

Package: xen-utils-4.0 Version: 4.0.1-5.4 Severity: important This bug affects xen-utils-4.0 in debian stable and xen-utils-4.1 in debian testing. xen-utils contains the python libraries for python development against xen/xenstore. These libraries should be separated from the main xen-utils packages so that they can be installed on a xen domU without pulling in dom0 xen functionality (i.e. the

libxen-dev_3.2.0-3_amd64.deb to pool/main/x/xen-3/libxen-dev_3.2.0-3_amd64.deb (new) libxenstore3.0_3.2.0-3_amd64.deb extra libs Xenstore communications library for Xen This package contains the public libxenstore. xen-3_3.2.0-3.diff.gz to pool/main/x/xen-3/xen-3_3.2.0-3.diff.gz xen-3_3.2.0-3.dsc to pool/main/x/xen-3/xen-3_3.2.0-3.dsc xen-docs-3.2_3.2.0-3_all.deb to

Package: xenstore-utils Version: 4.17.0+74-g3eac216e6e-1 Severity: serious User: debian-qa at lists.debian.org Usertags: piuparts Hi, during a test with piuparts I noticed your package ships (or creates) a broken symlink: 0m15.9s ERROR: FAIL: Broken symlinks: /usr/bin/xenstore-control -> ../lib/xen-common/bin/xen-utils-wrapper (xenstore-utils) cheers, Andreas

On Tue, Sep 8, 2015 at 11:25 PM, T.Weyergraf <T.Weyergraf at virtfinity.de> wrote: > Hi > > I gave the new Xen-4.6rc2 a spin on a CentOS 7 virtualisation guest > (nested-xen). I haven't yet started testing guests, but rather looked at the > install itself. > > One issue, I found, was with xenstored.service and the corresponding > unit-file: > > [root at