similar to: Raising VIRQ from hypervisor

Hi, I am working on a security architecture. In this architecture, the application in DomU has to communicate directly with the hypervisor. But as I can see, the xen architecture allows only DomU kernel to raise a hypercall. I am planning to enable application to communicate with xen directly. I am assuming, setting up a trap gate with Ring-3 access should do the trick. I have few questions

Hi, I have *implemented a new hypercall* and it is working fine when tested from the Dom0 user-space. I want to invoke this hypercall from DomU user-space. I copied all the /usr/lib/libxen* and /usr/include/xen* (recursively) to the DomU Here''s the code I wrote to invoke hypercall: #include <stdio.h> #include <xenctrl.h> int main(void){ int xc_handle, rc;

about VIRQ &amp; PIRQ what is VIRQ  ?How VIRQ is different from PIRQ ?How VIRQ &amp; 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

Hello, I''m interested in establishing a communication channel between the Xen hypervisor and a dom0 userspace application. Ideally this would be a 2-way channel, with the hypervisor asynchronously notifying this application, and then (for certain types of messages) wait for a reply from the userspace consumer. To this end, I''ve been reading xen-devel posts [1], read the

I am working on a security tool that monitors various components (IDT, SSDT, etc) of a domU using VM introspection. Currently, we''re using a polling method to monitor these in-core structions. We would like to be able to use a blocking method instead. I.e. specify "interesting" memory ranges and then wait until they are modified. How can I get the hypervisor to alert a

This is the report from Virt-Manager Unable to open a connection to the Xen hypervisor/daemon. Verify that: - A Xen host kernel was booted - The Xen service has been started Details: Unable to open connection to hypervisor URI ''xen:///'': libvirt.libvirtError virConnectOpenReadOnly() failed Traceback (most recent call last): File

# This is a BitKeeper generated diff -Nru style patch. # # ChangeSet # 2005/05/01 17:01:17-07:00 kmacy@curly.lab.netapp.com # add SMP support to evtchn # Signed-off-by: Kip Macy <kmacy@netapp.com> # # freebsd-5.3-xen-sparse/i386-xen/include/xen_intr.h # 2005/05/01 17:01:15-07:00 kmacy@curly.lab.netapp.com +3 -0 # add SMP interfaces # #

Xen patchbot -unstable wrote: ># HG changeset patch ># User cl349@firebug.cl.cam.ac.uk ># Node ID 8fe8a99b1c2a6ea88624546ab625eaa0758e3a17 ># Parent e69cbfee4011da1648718f1f5cbe8dabb956e72a >New console transport and update xenconsoled. >Add a new console interface using a seperate shared page and event channel >instead of passing the console input/output over control

Package: xen-hypervisor-4.1-amd64 Version: 4.1.1-3 Severity: important Whenever I try to start a domU, xm create failed for 'Boot loader didn't return any data!'. % sudo xm create -c squeeze.cfg Using config file "/etc/xen/squeeze.cfg". Error: Boot loader didn't return any data! It seems related to the following error in dmesg [1440.163935] pygrub[3654] trap invalid

Hello, It seems that I have installed Xen 4.1.2 successfully. Because I can see the following: [root@centOSHost su]# xm list Name ID Mem VCPUs State Time(s) Domain-0 0 3328 2 r----- 154.3 However, when I try to launch virtual machine manager (by clicking the icon directly), I see the following error

Package: xen-hypervisor-3.0-unstable-1-amd64 Version: 3.0-unstable+hg11292-2 Severity: important My server is a dell 2950 server. Before the dom0 rebooting bug ocurred, xen was well even for hvm domU. By now i have tried xen-hypervisor-3.0-amd64 (3.0.2+hg9697-2) and xen-hypervisor-3.0-unstable-1-amd64 (3.0-unstable+hg11292-2), but both of them are unusable for me. for

Hai, ? Im wondering what im doing wrong here.. sudo samba-tool domain level show Domain and forest function level for domain 'DC=internal,DC=domain,DC=tld' Forest function level: (Windows) 2008 R2 Domain function level: (Windows) 2008 R2 Lowest function level of a DC: (Windows) 2008 R2 sudo samba-tool domain level raise All changes applied successfully! sudo samba-tool domain level

G'day All, We are trying to raise the level of our test samba4 DCs. Our windows dude wants the Domain level to be 2012_R2. I am referencing: https://wiki.samba.org/index.php/Raising_the_Functional_Levels#Supported_Functional_Levels We managed to get both domain and forest levels to 2008 R2 - forest was 2003. However, when we try to raise further, we are getting what seems to be a

On 11/1/19 1:48 PM, Jason Gunthorpe wrote: > On Wed, Oct 30, 2019 at 12:55:37PM -0400, Boris Ostrovsky wrote: >> On 10/28/19 4:10 PM, Jason Gunthorpe wrote: >>> From: Jason Gunthorpe <jgg at mellanox.com> >>> >>> gntdev simply wants to monitor a specific VMA for any notifier events, >>> this can be done straightforwardly using

Package: xen-hypervisor-4.1-amd64 Version: 4.1.4-3 Severity: grave Justification: causes non-serious data loss -- System Information: Debian Release: 7.0 APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 3.2.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash

Good morning, I am working on a project that does some system profiling at hypervisor level. I want to send some data from hypervisor to Dom0, and each time the data to be sent are quite small: only 8 bytes. I imagine that each time after sending data to Dom0, hypervisor needs to somehow notify Dom0 about the data it has just sent. I am studying Xen and it looks like I can do it in 2 ways: 1)

Hi David, Any thoughts on either this pull request, or #129? https://github.com/networkupstools/nut/pull/128 https://github.com/networkupstools/nut/pull/129 Also note the mention of the new Python module here: https://github.com/george2/python-nut2/tree/development - Charles Begin forwarded message: > From: george2 <notifications at github.com> > Subject: [nut] PyNUT: Fix error

Hello to all, I have samba 4.17.10 running. When I try to raise funtion level to: samba-tool domain level raise --domain-level=2012_R2 ERROR: Domain function level can't be higher than the lowest function level of a DC! There is still the error as years ago. Are we still working on status function level 2008? Or is there a way to raise the level meanwhile? Greetings Daniel

How do we probe the Xen hypervisor, while running as the dom0 (which is the GUI frontend for us, and running as guest)? Since the entry to hypervisor is controlled, I supposed it will need a patch before systemtap can be used to probe the Xen hypervisor, right? Or is it not a logical thing to do? My target of interest will be to trace/analyze the behavior of the Xen hypervisor, and the

On Wed, Oct 30, 2019 at 12:55:37PM -0400, Boris Ostrovsky wrote: > On 10/28/19 4:10 PM, Jason Gunthorpe wrote: > > From: Jason Gunthorpe <jgg at mellanox.com> > > > > gntdev simply wants to monitor a specific VMA for any notifier events, > > this can be done straightforwardly using mmu_range_notifier_insert() over > > the VMA's VA range. > > >