From sacadmin Mon Aug 13 17:51:10 2007 Received: from newsunmail1brm.central.sun.com (newsunmail1brm.Central.Sun.COM [129.147.62.245]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id l7E0pACZ028687 for ; Mon, 13 Aug 2007 17:51:10 -0700 (PDT) Received: from nwk-avmta-1.SFBay.Sun.COM (nwk-avmta-1.SFBay.Sun.COM [129.146.11.74]) by newsunmail1brm.central.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.2) with ESMTP id l7E0mY0s014158; Mon, 13 Aug 2007 18:48:34 -0600 (MDT) Received: from pmxchannel-daemon.nwk-avmta-1.sfbay.Sun.COM by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0JMQ00415NL7KU00@nwk-avmta-1.sfbay.Sun.COM>; Mon, 13 Aug 2007 17:48:43 -0700 (PDT) Received: from sca-es-mail-2.sun.com ([192.18.43.133]) by nwk-avmta-1.sfbay.Sun.COM (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0JMQ00A6FNL2MA90@nwk-avmta-1.sfbay.Sun.COM>; Mon, 13 Aug 2007 17:48:38 -0700 (PDT) Received: from fe-sfbay-10.sun.com ([192.18.43.129]) by sca-es-mail-2.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l7E0mcLR011019; Mon, 13 Aug 2007 17:48:38 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-10.sun.com by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JMQ00I01NI6C400@fe-sfbay-10.sun.com> (original mail from Hitendra.Zhangada@Sun.COM); Mon, 13 Aug 2007 17:48:38 -0700 (PDT) Received: from [129.153.85.31] by fe-sfbay-10.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0JMQ002KJNL1YJF0@fe-sfbay-10.sun.com>; Mon, 13 Aug 2007 17:48:38 -0700 (PDT) Date: Mon, 13 Aug 2007 17:48:37 -0700 From: Hitendra Zhangada Subject: fast-track : 2007/462 - MEM_IFLUSH Hypervisor API call Sender: Hitendra.Zhangada@Sun.COM To: Firmware Arch Cc: hvrock-dev@Sun.COM, Richard Barnette Message-id: <46C0FBE5.8040304@sun.com> MIME-version: 1.0 Content-type: multipart/mixed; boundary="Boundary_(ID_qjPMuFnDqfWes/uz05b3bw)" X-PMX-Version: 5.2.0.264296 User-Agent: Thunderbird 2.0.0.5pre (X11/20070731) Status: RO Content-Length: 8715 This is a multi-part message in MIME format. --Boundary_(ID_qjPMuFnDqfWes/uz05b3bw) Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7BIT I am sponsoring this fast-track case for Richard Barnette. This case defines a new hypervisor API function to allow privileged software to take advantage of Rock's page flush feature. See details in the one-pager (also attached), http://sac.eng.sun.com/arc/FWARC/2007/462/materials/one-pager.txt Timer for this case expires on 08/20/2007. This case is seeking following release bindings. Release Binding: firmware: minor/micro firmware release OS: minor/micro/patch OS release. -- Hitendra Zhangada ==================================== SPS Common SW Features Engineering Systems Group, Sun Microsystems, Inc. Sun Ph# (858) 625 3757, Sun Ext. x53757 Internal homepage http://esp.west/~hitu --Boundary_(ID_qjPMuFnDqfWes/uz05b3bw) Content-type: text/plain; name=mem_iflush-onepager.txt Content-transfer-encoding: 7BIT Content-disposition: inline; filename=mem_iflush-onepager.txt Copyright 2006 Sun Microsystems 1. Introduction 1.1. Project/Component Working Name: MEM_IFLUSH Hypervisor API call 1.2. Name of Document Author/Supplier: Richard Barnette 1.3. Date of This Document: 08/13/2007 1.4. Name of Major Document Customer(s)/Consumer(s): 1.4.1. The PAC or CPT you expect to review your project: N/A (work will be part of the Supernova RR deliverable, but this item will not be specifically reviewed by any business team). 1.4.2. The ARC(s) you expect to review your project: FWARC 1.4.3. The Director/VP who is "Sponsoring" this project: Ravi Subbarao 1.4.4. The name of your business unit: Systems 1.5. Email Aliases: 1.5.1. Responsible Manager: umesh.sharma@sun.com 1.5.2. Responsible Engineer: richard.barnette@sun.com 1.5.3. Marketing Manager: 1.5.4. Interest List: hvrock-dev@sun.com 2. Project Summary 2.1. Project Description: Implement a new hypervisor API function to allow privileged software to take advantage of Rock's page flush feature. 2.2. Risks and Assumptions: This proposal assumes other CPUs (including successors to Rock such as Rock+ or Rock2) may or may not choose to implement the API. Other CPUs may not be able to provide an equally significant performance benefit, or may not require a hyperprivileged function to do so. 3. Business Summary 3.1. Problem Area: This new API will allow privileged software to take advantage of non-standard performance capabilities of current and future sun4v CPUs without requiring changes to the SPARC privileged (sun4v) instruction set architecture. 3.2. Market/Requester: The feature is to be provided to improve the performance of Supernova systems. Other system platforms may be able to provide benefit from this new API as well. 3.3. Business Justification: This API will provide measurable performance improvements to Supernova systems at negligible cost. 3.4. Competitive Analysis: 3.5. Opportunity Window/Exposure: Required for Supernova RR, in the second half of CY2008. 3.6. How will you know when you are done?: The project will be done when the API is implemented according to specification, and use of the API demonstrates statistically significant, measurable performance improvements on Supernova systems running Solaris. 4. Technical Description: 4.1. Details: The API will be added with the following registry values: Name: MEM_IFLUSH API group: 0x10 API major number: 1 API minor number: 0 FAST_TRAP function number: 0x33 Input arguments: arg0 raddr arg1 length Return values: ret0 status ret1 act_length Errors: EOK "act_length" bytes successfully flushed, starting at "raddr". EINVAL "length" is 0. ENORADDR "raddr" not valid. The call requests that instruction memory be synchronized with data memory for all addresses in the range from "raddr" through "raddr+length-1", inclusive. The call may flush fewer bytes than actually requested, in which case the returned "act_length" value indicates the number of bytes actually flushed. The call may also flush addresses outside the requested range (either lower addresses, or higher addresses); flushes outside the requested range are not reported. When the call returns, instruction fetches from the calling virtual CPU in the range between "raddr" and "raddr+act_length-1", inclusive (including virtual address references that translate to this range) will see the results of any data store that the virtual CPU executed prior to the call. Instruction fetches on other virtual CPUs within the guest will eventually also see the same updates. Although the latency for updates to become visible on other virtual CPUs is not specified, this API call does impose an ordering requirement: Updates on other CPUs will be ordered so that any load or store made after a virtual CPU completes this call will not complete until all updates resulting from that call are visible to all other virtual CPUs. Implementation note: This call is equivalent to using a FLUSH instruction on every address in the flushed range, followed by "membar #Sync", except for the following: * The call will typically execute faster than equivalent FLUSH instructions, at least for large "length" values. * The operation requires a real, rather than a virtual address. 4.2. Bug/RFE Number(s): N/A 4.3. In Scope: N/A 4.4. Out of Scope: N/A 4.5. Interfaces: 4.5.1 Imported Interfaces : Interface Classification Comments ============================================================== HV APIs Sun Private FWARC/2005/116 4.5.2 Exported Interfaces : Interface Classification Comments ============================================================== MEM_IFLUSH API function Sun Private Function 0x33, group 0x10 as defined in section 4.1 4.6. Doc Impact: The "UltraSPARC Virtual Machine Specification" (a.k.a. the Hypervisor API spec) must be updated to reflect the new API. 4.7. Admin/Config Impact: No change to system administration or configuration. 4.8. HA Impact: No impact on High Availability or Clustering. 4.9. I18N/L10N Impact: No impact on internationalization or localization. 4.10. Packaging & Delivery: The API will be an integral part of the Hypervisor firmware on Supernova systems. 4.11. Security Impact: No security impact. 4.12. Dependencies: No dependencies. 5. Reference Documents: SPARC V9 manual: https://systemsweb.sfbay.sun.com/archperf/SPARC/SPARC-V9-current.pdf Rock PRM (Latest Book): https://systemsweb.sfbay.sun.com/rock/team/docs/rkprm_1.4.pdf Hypervisor API (Open document available on opensparc.net): http://opensparc-t1.sunsource.net/specs/Hypervisor-api-current-draft.pdf 6. Resources and Schedule: 6.1. Projected Availability: The API is implemented and available now. Performance testing will begin when sufficient machine and developer resources are available. 6.2. Cost of Effort: Implementation/debug: (Rock HV): 1 week (Solaris): 1 week Performance testing: (Test, evaluate, tune): 2 weeks 6.3. Cost of Capital Resources: Negligible (existing bringup systems are adequate) 6.4. Product Approval Committee requested information: 6.4.1. Consolidation or Component Name: SPARC System Firmware (Hypervisor) 6.4.3. Type of CPT Review and Approval expected: N/A 6.4.4. Project Boundary Conditions: N/A 6.4.5. Is this a necessary project for OEM agreements: No 6.4.6. Notes: 6.4.7. Target RTI Date/Release: TBD. Will be part of Supernova RTI; other platforms could choose to implement sooner. 6.4.8. Target Code Design Review Date: Formal review of all Supernova Hypervisor code changes will be held prior to RTI for the Supernova Hypervisor; that review will include the Rock support for this API. Initial review of this code change has already taken place on the hvreview@sun.com alias. 6.4.9. Update approval addition: N/A 6.5. ARC review type: FastTrack 7. Prototype Availability: 7.1. Prototype Availability: Currently available. 7.2. Prototype Cost: Negligible. --Boundary_(ID_qjPMuFnDqfWes/uz05b3bw)-- From sacadmin Mon Aug 20 18:34:52 2007 Received: from sunmail5.uk.sun.com (sunmail5.UK.Sun.COM [129.156.85.165]) by sac.sfbay.sun.com (8.13.8+Sun/8.13.8) with ESMTP id l7L1YpbE005793 for ; Mon, 20 Aug 2007 18:34:52 -0700 (PDT) Received: from nwk-avmta-2.sfbay.sun.com (nwk-avmta-2.SFBay.Sun.COM [129.145.155.6]) by sunmail5.uk.sun.com (8.13.7+Sun/8.13.7/ENSMAIL,v2.2) with ESMTP id l7L1WEQb024161; Tue, 21 Aug 2007 02:32:19 +0100 (BST) Received: from pmxchannel-daemon.nwk-avmta-2.sfbay.sun.com by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) id <0JN30060BO9S1D00@nwk-avmta-2.sfbay.sun.com>; Mon, 20 Aug 2007 18:32:16 -0700 (PDT) Received: from sca-es-mail-2.sun.com ([192.18.43.133]) by nwk-avmta-2.sfbay.sun.com (Sun Java System Messaging Server 6.2-3.04 (built Jul 15 2005)) with ESMTP id <0JN3005NSO9RJP10@nwk-avmta-2.sfbay.sun.com>; Mon, 20 Aug 2007 18:32:15 -0700 (PDT) Received: from fe-sfbay-09.sun.com ([192.18.43.129]) by sca-es-mail-2.sun.com (8.13.7+Sun/8.12.9) with ESMTP id l7L1WFVJ017297; Mon, 20 Aug 2007 18:32:15 -0700 (PDT) Received: from conversion-daemon.fe-sfbay-09.sun.com by fe-sfbay-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) id <0JN300801O4ZYP00@fe-sfbay-09.sun.com> (original mail from Hitendra.Zhangada@Sun.COM); Mon, 20 Aug 2007 18:32:15 -0700 (PDT) Received: from [129.153.85.10] by fe-sfbay-09.sun.com (Sun Java System Messaging Server 6.2-8.04 (built Feb 28 2007)) with ESMTPSA id <0JN3007DMO9QENB0@fe-sfbay-09.sun.com>; Mon, 20 Aug 2007 18:32:14 -0700 (PDT) Date: Mon, 20 Aug 2007 18:32:14 -0700 From: Hitendra Zhangada Subject: Re: fast-track : 2007/462 - MEM_IFLUSH Hypervisor API call In-reply-to: <46C0FBE5.8040304@sun.com> Sender: Hitendra.Zhangada@sun.com To: Hitendra Zhangada Cc: Firmware Arch , hvrock-dev@sun.com, Richard Barnette Message-id: <46CA409E.2030204@sun.com> MIME-version: 1.0 Content-type: text/plain; format=flowed; charset=ISO-8859-1 Content-transfer-encoding: 7BIT X-PMX-Version: 5.2.0.264296 References: <46C0FBE5.8040304@sun.com> User-Agent: Thunderbird 2.0.0.7pre (X11/20070811) Status: RO Content-Length: 886 Hitendra Zhangada wrote: > I am sponsoring this fast-track case for Richard Barnette. > > This case defines a new hypervisor API function to allow > privileged software to take advantage of Rock's page flush > feature. See details in the one-pager (also attached), > http://sac.eng.sun.com/arc/FWARC/2007/462/materials/one-pager.txt > > Timer for this case expires on 08/20/2007. > > This case is seeking following release bindings. > > Release Binding: > firmware: minor/micro firmware release > OS: minor/micro/patch OS release. This case has timed-out and hence now approved for the release bindings requested above. I will update the registry. Thanks. -- Hitendra Zhangada ==================================== SPS Common SW Features Engineering Software Group, Sun Microsystems, Inc. Sun Ph# (858) 625 3757, Sun Ext. x53757 Internal homepage http://esp.west/~hitu