similar to: xenstored

Displaying 20 results from an estimated 2000 matches similar to: "xenstored"

2008 Mar 11
3
Is it possible to make hypercall from user application directly?
Hi, I implemented my own Hypercall in xen. Now I wish my application under dom0 could talk to Xen via my hypercall. Currently, I make a stub in dom0''s kernel, which works as a proxy to forward the request. So, my application first makes a system call to dom0, which then makes hypercall to xen. Is this design necessary? May I call hypercalls from user application under dom0 directly?
2007 Nov 10
3
ring.h notification hold-off question
hi. trying to understand the idea behind _notify in #define RING_PUSH_REQUESTS_AND_CHECK_NOTIFY(_r, _notify) do { \ RING_IDX __old = (_r)->sring->req_prod; \ RING_IDX __new = (_r)->req_prod_pvt; \ wmb(); /* back sees requests /before/ updated producer index */ \ (_r)->sring->req_prod = __new;
2008 Aug 20
3
Grant Table Hyper Calls For Sharing Memory
I was following an email chain in the xen mailing list on HVM hypercalls on grant tables and the email chain link is below http://lists.xensource.com/archives/html/xen-devel/2007-03/msg00688.html This link says that we need not required hypercalls to share memory b/w HVM''s. But as far as my understanding of sharing memory is concerned, I think the memory is shared using grant table
2008 Aug 05
4
Mini-OS and Xen!
Hi I have a doubt regarding Mini-OS and Xen. If it is true that Xen reserves in the virtual address space the top 64MB on 32bit systems and 168MB in PAE systems, doesn''t it exist with a Mini-OS kernel which has only 32MB in size i.e. going by its default config file? Obviously I''m missing something. Regards, Bhaskar. _______________________________________________ Xen-devel
2008 Feb 24
7
Using SYSCALL/SYSRET with a minios kernel
Hi, I''m trying to use the SYSCALL/SYSRET opcodes with a minios kernel without much success. Going by the manuals (and linux sources) I first have to setup the STAR and LSTAR registers to define the segment and instruction pointer to be used for SYSCALL: /* * LSTAR and STAR live in a bit strange symbiosis. * They both write to the same internal register. STAR allows
2008 Mar 18
2
The return value of xc_map_foreign_range~~~
I am shame to say that I have never met a function whose return value is void*. This is the first time~~~ So, can anyone told me the meaning of the return value of this function -----xc_map_foreign_range? Is it a pointer pointed to a memory area corresponding the machine frame number(the last parameter passed to the function)? And the third parameter named size: the unit of size is in bytes or
2008 Apr 09
1
Hypercall
Hi, I''d like to do some operation every time an hypercall is issued in a domU kernel. I started modifying include/asm-i386/mach-xen/asm/hypercall.h but I don''t think it''s such a great idea, so I think that, as a last chance, I''ll have to substitute all of the hypercall function call with some wrapper function of my own. Can anyone tell me if
2007 Nov 20
2
netfront/back documentation on wiki
Hi all, I''ve taken a stab at documenting the current interface between netfront and netback drivers, here: http://wiki.xensource.com/xenwiki/XenNetFrontBackInterface Currently, the only way for non-Linux implementers to adhere to this interface is to study the Linux netfront driver, which has a great deal of optimizations and is not meant to be documentation. I''d love it if
2008 Apr 04
8
Grant tables
Hi, I need to use the grant table mechanism, but I can''t find any example regarding how to do it. Could you please provide some examples? Thanks Carlo -- È molto più bello sapere qualcosa di tutto, che sapere tutto di una cosa. Blaise Pascal _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
2006 Aug 11
7
How Xen handles Dom1 interrupts?
Good morning, I am new to Xen, and trying to understand how Xen works. I have some questions about virtualization of interrupts on Xen. Thanks in advance for all helps. 1) From papers about Xen architecture found at Xen homepage, Xen seemingly intercepts interrupts of Dom1 (paravirtualization). So interrupts occur in Dom1''s context are sent to Xen, and Xen handles them. Is that correct?
2007 Nov 28
20
Page tables in Xen
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
2011 Jul 20
12
Re: Re: XAPI on debian - sr-create issue
You''re right scout the last line. Out looks like xapi is waiting on tapdisk to plug a key into xenstore. Perhaps a udev rule problem? Perhaps someone who knows more about tapdisk than I well be able to diagnose this tomorrow. Mike Sent from Samsung tablet Sébastien RICCIO <sr@swisscenter.com> wrote: Of course, here it is attached. Last line seems interesting. However tapdisk2
2007 Jan 15
8
Modular Xen
It seems to me that Xen is full of stuff that aren''t beneficial for everybody, this includes NUMA, ACM and other stuff that certain companies try to introduce... In a better world, the Xen binary would have been more sleek and fast, and those extra features should be loaded via stating a Module boot line in Grub. This way, testing would be easy and it''s more elegant than using a
2007 Feb 19
5
Structure of the Xen source code
Structure of the Xen source code hi all, I installed Xen on my Gentoo machine successfully from source. Now i am going through the code. instead of banging aimlessly for a week or so i thought i should ask the mailing list the following small doubts. I noticed that following directories are there in my xen-3.0.3_0-src directories. 1. linux-2.6.-xen-sparse 2. pristine-linux-2.6.16.29 3.
2007 Mar 13
4
vmx status report against changeset 14356 - 1 new issue
Hi,All We have tested the latest xen on VT platform with Intel 915/E8500 chipset. Two platforms (PAE/32E) test all are based on SMP, It means that we boot up SMP guest OS in VMX. Here is the test summary: New issue (1) ================================================ 1) Fails to restore VMX guests http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=929 Issues List (3):
2007 Mar 15
12
performance counters
In order to be meaningful and usable together with other measuring methods, their use in my opinion should impose as little overhead as possible. With that, I wonder why per-cpu counters use atomic operations. Thanks, Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel
2006 Aug 10
1
Gratuitous/unsolicited ARP
hi. for domain migration, this is an obvious procedure in order to announce the relocation of the guest being bridged on a different host. i''ve been grepping around the xen build tree to see whether and where this is covered. haven''t found anything yet. is this covered by linux kernel bridging already, or is it just missing [read: left as a scripting exercise to
2008 Mar 07
6
where is the location of definition of "do_xen_version"?
hi, my friends: Currently, i am studying the way of hypercall's implementation. i have already known the flow of hypercall's execuation, and i decided to add a new hypercall into the Xen. first, i want to know the detail of one hypercall function, for example, "do_xen_version", but i can not find the location of definition of "do_xen_version". who can help me? i have
2012 Nov 14
2
Bug#693217: Removal of xenstore tdb file before xenstored daemon
Package: xen-utils-common Version: 4.0.0-1 Consider removal of xenstored tdb file (located at /var/lib/xenstored/tdb) before start of xenstored daemon during the boot (or removal during the shutdown/reboot of the server) as proposed by Ian Campbell during our discussions [1]. [1] http://lists.xen.org/archives/html/xen-users/2012-11/msg00111.html -- Peter Viskup
2012 Mar 26
13
blkback global resources
All the resources allocated based on xen_blkif_reqs are global in blkback. While (without having measured anything) I think that this is bad from a QoS perspective (not the least implied from a warning issued by Citrix''es multi-page-ring patches: if (blkif_reqs < BLK_RING_SIZE(order)) printk(KERN_WARNING "WARNING: " "I/O request space (%d reqs) < ring