similar to: question about mapping memory from Dom0 to domU

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, 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

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I''m breaking the tidying up into parts. The first is renaming libxc => libxenctl. I''d like to rename tools/libxc to tools/libxenctl but I thought it might be worth waiting until "flag day" so that we can avoid losing revision history. Does that seem reasonable? Rename libxc to libxenctl, xc.h to xenctl.h, and install xenctl.h to /usr/include/xen/xenctl.h

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;

Hi all, I am running the current xen-unstable and had the following error message when trying to create domain1. # ./xenctl script -f/etc/xen-mynewdom Domain defaults: name XenoLinux size 98304 vifs 1 domainImage /boot/xenolinux.gz domainInitRD null rootDevice /dev/hda5 rootArgs rw usrDevice null NWIP

2011/7/19 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: > CC''ing Tim and xen-devel > > On Mon, 18 Jul 2011, Jiageng Yu wrote: >> 2011/7/16 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: >> > On Fri, 15 Jul 2011, Jiageng Yu wrote: >> >> 2011/7/15 Jiageng Yu <yujiageng734@gmail.com>: >> >> > 2011/7/15

Hi, I just had a try using the xeno-unstable. When I used the xc_dom_create.py to create a new domain I got the followings: ============================================== Traceback (most recent call last): File "/usr/bin/xc_dom_create.py", line 332, in ? (current_id, current_port) = make_domain() File "/usr/bin/xc_dom_create.py", line 238, in make_domain

Hi, I looked at the function xc_translate_foreign_address(), and see that it walks the page table of the guest VM. So at best, it should return the pfn of the guest (?) We can see taht the Later part of the function is like this: ... if (pt_levels >= 3) mfn = (pte & L0_PAGETABLE_MASK_PAE) >> PAGE_SHIFT; else mfn = (pte & L0_PAGETABLE_MASK)

This patch allows core-dumping to work on a cross-bit host/guest configuration, whereas previously that was not supported. It supports both PV and FV guests. The core file format generated by the host, needs to match that of the guest, so an alignment issue is addressed, along with the p2m frame list handling being done according to the guest size. Signed-off-by: Bruce Rogers

On Thu, 2005-06-16 at 06:17 +0100, Keir Fraser wrote: > > I suggested that we simply mmap /dev/kmem for the xenstored to access > > the domain0 page for the moment. That doesn''t work: we''ll do something > > else. > > Just use xc_map_foreign_range(), as you would for mapping any other > domain''s xenstore page. So here''s my patch

Grant references for the xenstore and xenconsole shared pages exist, but currently only xenstore uses these references. Change the xenconsole daemon to prefer using the grant reference over map_foreign_range when mapping the shared console ring. This allows xenconsoled to be run in a domain other than dom0 if set up correctly - for libxl, the xenstore path /tool/xenconsoled/domid specifies the

On 31.10.13 04:34, Miguel Clara wrote: > I was trying to get a core-dump for a domU with xl and got this error: > > # xl dump-core 20 test.core > Memory fault > > GDB shows this: > > a# gdb xl xl.core > GNU gdb (GDB) 7.3.1 > Copyright (C) 2011 Free Software Foundation, Inc. > License GPLv3+: GNU GPL version 3 or later<http://gnu.org/licenses/gpl.html> >

Hi, I had a problem trying to migrate domains, in trying to locate it I noticed that saving domains doesn''t work either, which I believe explains why the receiving xfrd doesn''t actually receive anything. So here it goes... xenone:/tmp# xm list Name Id Mem(MB) CPU State Time(s) Console Domain-0 0 123 0 r---- 900.6 sky 9

I am trying to write a script to handle setup of domains using virtual block devices for their root FS and have been unable to get the virtual devices to work with any sort of consistency. This is using xen-1.1.bk on Redhat 7.3 (I had to rebuild all the tool binaries to run on 7.3). Anyway, I would first like to make sure I am using the vd/vbd stuff correctly. Here is an example of the problem I

Grant references for the xenstore and xenconsole shared pages exist, but currently only xenstore uses these references. Change the xenconsole daemon to prefer using the grant reference over map_foreign_range when mapping the shared console ring. This allows xenconsoled to be run in a domain other than dom0 if set up correctly - for libxl, the xenstore path /tool/xenconsoled/domid specifies the

Using the 2.0.6 demo cd image, I booted the supplied freebsd image and rsync''d the file system to an NFS server. However I don not seem to be able to succesfully boot from it the system just hangs here: xn0: bpf attached xn0: Ethernet address: aa:00:00:61:1c:d4 lo0: bpf I have modified /sbin/start_freebsd.sh and /etc/xen/freebsd.py to generate the following configuration: xendemo:~#

The following dump-core patches changes its format into ELF, adds PFN-GMFN table, HVM support, and adds experimental IA64 support. - ELF format Program header and note section are adopted. - HVM domain support To know the memory area to dump, XENMEM_set_memory_map is added. XENMEM_memory_map hypercall is for current domain, so new one is created. and hvm domain builder tell xen its

Hello, I am hacking on a Mini-OS that is able to run as domain 0 and is able to start a guest (another Mini-OS for now). I was able to get a memory allocated to the guest and am now trying to build its pagetable and after that copy the kernel to the right places. The problem is: Given a machine frame number from a memory frame of the guest, how do I conceptionally map this into

I am using Xen 3.0.4 vmx (on Intel VT). I need to map in a foreign page, given its mfn (not gpfn), into dom0. I used to do this quite well with Xen 3.0.2. However, when I ported my code to Xen 3.0.4, things seem to have changed. Does xc_map_foreign_range accept an mfn or a gpfn as its argument? It seems to be accepting gpfn in 3.0.4. Is that true? If so, can anyone please suggest a way for