similar to: multi-core VMM

If the domain''s NUMA node-affinity is being specified by the user/toolstack (instead of being automatically computed by Xen), we really should stick to that. This means domain_update_node_affinity() is wrong when it filters out some stuff from there even in "!auto" mode. This commit fixes that. Of course, this does not mean node-affinity is always honoured (e.g., a vcpu

in _csched_cpu_pick(), as not doing so may result in the domain''s node-affinity mask (as retrieved by csched_balance_cpumask() ) and online mask (as retrieved by cpupool_scheduler_cpumask() ) having an empty intersection. Therefore, when attempting a node-affinity load balancing step and running this: ... /* Pick an online CPU from the proper affinity mask */

Hello, This small series deals with some weirdness in the mechanism with which the credit scheduler choses what PCPU to tickle upon a VCPU wake-up. Details are available in the changelog of the first patch. The new approach has been extensively benchmarked and proved itself either beneficial or harmless. That means it does not introduce any significant amount of overhead and/or performances

Changes from v1 to v2: - Use a macro to replace the hardcode in patch 1/3. This patchset fixes issues about IA32_VMX_MISC MSR emulation, VMCS guest area synchronization about PAGE_FAULT_ERROR_CODE_MASK/PAGE_FAULT_ERROR_CODE_MATCH, and CR0/CR4 emulation. Please help to review and pull. Thanks, Dongxiao Dongxiao Xu (3): nested vmx: emulate IA32_VMX_MISC MSR nested vmx: synchronize page

Hello, Third version of the NUMA placement series Xen 4.2. All the comments received during v2''s review have been addressed (more details in single changelogs). The most notable changes are the following: - the libxl_cpumap --> libxl_bitmap renaming has been rebased on top of the recent patches that allows us to allocate bitmaps of different sizes; - the heuristics for deciding

Hi all (and Mr. Dunlap in particular), I have a question about the credit (and ultimately credit2) scheduler that I hope you can help me with. I have read the white paper "Scheduler development update" and as much material on the credit scheduler as I can find, but I am still not completely clear on how I should think about the cap. Example scenario: Server hardware: 2

Hi all, Please can anybody explain how communication(direct or indirect) happens between xen and guest os(windows) in full virtualization mode. Both from VMM to guest and from guest to VMM. Thanks and regards, Aditya. __________________________________________________________ Yahoo! India Answers: Share what you know. Learn something new http://in.answers.yahoo.com/

Hi all, This is the second take of a patch that I submitted some time ago for allowing specifying vcpu pinning taking NUMA nodes into account. IOW, something like this: * "nodes:0-3": all pCPUs of nodes 0,1,2,3;  * "nodes:0-3,^node:2": all pCPUS of nodes 0,1,3;  * "1,nodes:1-2,^6": pCPU 1 plus all pCPUs of nodes 1,2    but not pCPU 6; v1 was a single patch, this is

Changes from v2 to v3: - Use pfn_to_paddr() to get the address from frame number instead of doing shift directly. - Remove some unnecessary initialization code and add "static" to vmentry_fields and gpdptr_fields. - Enable the VMREAD/VMWRITE bitmap only if nested hvm is enabled. - Use clear_page() to set all 0 to the page instead of memset(). - Use domheap to allocate the

Better use of VMX execution controls MSR. Signed-off-by: Xin Li<xin.b.li@intel.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi, I know this may be very basic question but I need some help . Actually I installed VM using the Xen Administrative console. Now I need to change the configuration file as I need to passthrough (using the pci-hide) a SCSI contoller from Dom0 to DomU. But I couldnot find the configuration file. Where can I find the Configuration file for this DomU? Actually I added the

From: Zhang Xiantao <xiantao.zhang@intel.com> With virtual EPT support, L1 hyerpvisor can use EPT hardware for L2 guest''s memory virtualization. In this way, L2 guest''s performance can be improved sharply. According to our testing, some benchmarks can show > 5x performance gain. Signed-off-by: Zhang Xiantao <xiantao.zhang@intel.com> Zhang Xiantao (11):

Hi all, I need a periodic timer running at ideally at 125 microseconds and at least 500 microseconds. I''ve just found the VCPUOP_set_periodic_timer, however there is a comment saying "periods less than one millisecond may not be supported". I will be running on an x64 machine. Is this supported? If not, is there any alternate means of generating a fast interrupt? Regards.

I recently realized that the original way of dealing with the DebugCtl MSR on VMX failed to make use of the dedicated guest VMCS field. This is being fixed with this patch. What is puzzling me to a certain degree is that while there is a guest VMCS field for this MSR, there''s no equivalent host load field, but there''s also no indication that the MSR would be cleared during a

Aiming at a release later in October (before Xen Summit I would hope), I''d like to cut RC1 next week. Please indicate any bug fixes that so far may have been missed in the backports already done. Jan

Hello, I have asked this question in Xen-users mailing list too. But since it involves compiling from source, I realised asking this here makes more sense. Please forgive me for the spam. I am relatively new to Xen and need help compiling and installing Xen from source. Using some tutorials online, I have got Xen working with the ''yum install xen'' method. I used virt-manager

About rationale, usage and (some small bits of) API. Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> --- Changes from v7: * avoid referring to 4.2 release as "upcoming". * libxl placement disabling key explicitly mentioned. * Limit of max 16 NUMA nodes explicitly mentioned. Changes from v6: * text updated to

Hello everyone, Reposting with after having applied the (minor) fixes suggested by Wei and Jan. Allen, if you can tell us what you think about this, or suggest someone else to ask some feedback to, if you''re no longer involved with VT-d, that would be great! :-) -- As already discussed here [1], dealing with IOMMU faults in interrupt context may cause nasty things to happen, up to

When using sedf scheduler in a cpupool the system might panic when setting sedf scheduling parameters for a domain. Signed-off-by: juergen.gross@ts.fujitsu.com 1 file changed, 4 insertions(+) xen/common/sched_sedf.c | 4 ++++ _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

Hi, the implementation of xl cpupool-numa-split is broken. It basically deals with only one poolid, but there are two to consider: the one from the original root CPUpool, the other from the newly created one. On my machine the current output looks like: root@dosorca:/data/images# xl cpupool-numa-split libxl: error: libxl.c:2803:libxl_create_cpupool Could not create cpupool error on creating