search for: pio

On Wed, 2013-06-05 at 16:53 -0500, Anthony Liguori wrote: > Existing PowerPC remaps PIO to MMAP so it works fine today. > > Future platforms may not do this but future platforms can use a > different device. They certainly won't be able to use the existing > drivers anyway. > > Ben, am I wrong here? Well, we do remap PIO, though it's ugly and annoying so...

On Wed, 2013-06-05 at 16:53 -0500, Anthony Liguori wrote: > Existing PowerPC remaps PIO to MMAP so it works fine today. > > Future platforms may not do this but future platforms can use a > different device. They certainly won't be able to use the existing > drivers anyway. > > Ben, am I wrong here? Well, we do remap PIO, though it's ugly and annoying so...

When running on PowerPC, we don''t have native PIO support. There are a few hacks around to enable PIO access on PowerPC nevertheless. The most typical one is the isa-mmio device. It takes MMIO requests and converts them to PIO requests on the (QEMU internal) PIO bus. This however is not how real hardware works and it limits us in the ability to...

On 08/05/15 12:49, Mario Pio Russo wrote: > Hi all > > just going back to this, Steve can you please expalin where did you take > this number from? 11644473600 > > that seems not to work correctly on my system so I was lookin g how to > tailor down the right value > > thanks > > > __________...

great thanks Steve ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

...ago, here's a summary and some proposals: At the moment, virtio PCI uses IO BARs for all accesses. The reason for IO use is the cost of different VM exit types of transactions and their emulation on KVM on x86 (it would be trivial to use memory BARs on non x86 platforms if they don't have PIO). Example benchmark (cycles per transaction): (io access) outw 1737 (memory access) movw 4341 for comparison: (hypercall access): vmcall 1566 (pv memory access) movw_fast 1817 (*explanation what this is below) This creates a problem if we want to make virtio devices proper PCI express devices...

...ago, here's a summary and some proposals: At the moment, virtio PCI uses IO BARs for all accesses. The reason for IO use is the cost of different VM exit types of transactions and their emulation on KVM on x86 (it would be trivial to use memory BARs on non x86 platforms if they don't have PIO). Example benchmark (cycles per transaction): (io access) outw 1737 (memory access) movw 4341 for comparison: (hypercall access): vmcall 1566 (pv memory access) movw_fast 1817 (*explanation what this is below) This creates a problem if we want to make virtio devices proper PCI express devices...

Hi, This set of patches remarkably accelerates IDE PIO on HVM/IA64. I got a throughput of 2.11MB/sec in disk read performance. Without it, it was only 64kB/sec. I posted the prototype once. http://lists.xensource.com/archives/html/xen-devel/2006-12/msg00077.html The basic idea is to add a buffering mechanism in a hypervisor. I know this approach is...

...linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging (2011-10-30 15:54:59 -0700) > > are available in the git repository at: > > git://github.com/rustyrussell/linux.git master > > Alexey Kardashevskiy (1): > virtio-pci: Use PCI MMIO instead of PIO when available I missed this one - wasn't Cc'd neither me, kvm or virtio mailing lists. It's well known that mmio is much slower than pio on kvm, since mmio needs to be emulated to get at the address. So I'm expecting this will cause a performance regression. IMO we should keep us...

...linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging (2011-10-30 15:54:59 -0700) > > are available in the git repository at: > > git://github.com/rustyrussell/linux.git master > > Alexey Kardashevskiy (1): > virtio-pci: Use PCI MMIO instead of PIO when available I missed this one - wasn't Cc'd neither me, kvm or virtio mailing lists. It's well known that mmio is much slower than pio on kvm, since mmio needs to be emulated to get at the address. So I'm expecting this will cause a performance regression. IMO we should keep us...

...tribute "Description" is already being used, so I was wondering if there are other attributes I can use to store short alphanumeric string (e.g. the internal Employee number etc). Thanks !! ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

...into the smb.conf? Maybe the guys from Enterprise samba have already included the patch into their releases so it's just a maatter of enabling the flag. I'm using sernet-samba-4.2.2 Thanks! ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

On 6/4/2015 9:57 AM, Mario Pio Russo wrote: > guys sorry to take this thread onboard once more, but I still can't get > this sorted. > > I have compiled the latest tarball from samba, 4.2.2 . compilation works > fine and after that I am able to upgrade from samba 3 with the following > command: > > sa...

...ee if i am getting this right: 1) use MS ADSI editor to add few more attributes to the "users" class 2) use ldapmodify from my ubuntu server to populate those attributes would that work? ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

...Day all I am going to create few scripts that uses the ldapmodify in order to populate and samba4 Domain, I was wondering , what is the full list of attributes that a samba 4 domain supports? thanks ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

..., only default GPO ) auth methods = sam, winbind is sufficient to login with rdp. so if we can find what we need to get GPO workin also, that might help the developers. I'll set some GPOs in my test and try again also. Greetz, Louis >-----Oorspronkelijk bericht----- >Van: Mario Pio Russo [mailto:mariopiorusso at ie.ibm.com] >Verzonden: vrijdag 1 mei 2015 15:08 >Aan: L.P.H. van Belle >CC: samba at lists.samba.org >Onderwerp: RE: [Samba] After the classicupgrade from samba3 to >sernet-samba-4.2.1 , users are not able to remote desktop anymore > >Thanks Lu...

Cool, I'll have a look at this too, thanks All! ___________________________________________________________________________________________ Mario Pio Russo, System Admin SWG IT Services Dublin, Phone & FAX: +353 1 815 2236, eMail: mariopiorusso at ie.ibm.com IBM Ireland Product Distribution Limited registered in Ireland with number 92815. Registered Office: IBM House, Shelbourne Road, Ballsbridge, Dublin 4 (Embedded image moved to file: pic...

On 15/07/15 15:10, Mario Pio Russo wrote: > OR > > is there any way, or magical hidden parmeter in the smb.conf that allows to > enumerate the users in the Domain Users? tbh this has a huge impact on the > file share server as many directorys have "domain users" as group I don't think you understa...

...> >> > >> 1) PCI-e says that you must be able to disable IO bars and still have a > >> functioning device. > >> > >> 2) It says (1) because you must size IO bars to 4096 which means that > >> practically speaking, once you enable a dozen or so PIO bars, you run > >> out of PIO space (16 * 4k == 64k and not all that space can be used). > > > > > > Let me add 3 other issues which I mentioned and you seem to miss: > > > > 3) architectures which don't have fast access to IO ports, exist > > vir...

...> >> > >> 1) PCI-e says that you must be able to disable IO bars and still have a > >> functioning device. > >> > >> 2) It says (1) because you must size IO bars to 4096 which means that > >> practically speaking, once you enable a dozen or so PIO bars, you run > >> out of PIO space (16 * 4k == 64k and not all that space can be used). > > > > > > Let me add 3 other issues which I mentioned and you seem to miss: > > > > 3) architectures which don't have fast access to IO ports, exist > > vir...