=Comment: #0================================================= Stephanie A. Glass <sglass@us.ibm.com> - 2007-09-20 15:26 EDT 1. Feature Id 201068 Feature Name Include PCI-X hot plug updates/patches from upstream. Sponsor xSeries Category xSeries Request Type Driver - Update Version 2. Short Description There are bugs in acpiphp that prevent PCI-X hotplug operations from working in IBM System x servers (and likely in other servers that support PCI-X hotplug). The known issues are: 1) PCI memory resource mis-allocation on systems where PCI-X slots exist directly below a PHB in the PCI hierarchy and PCI memory resources aren't obtainable from the PHB config space. 2) SERR during PCI-X hp operation because acpiphp incorrectly writes _HPP parameters to the PHB config space. 3) acpiphp fails to power off slot due to missing logic to detect _EJ0 in PCI core Problems 2) and 3) have been fixed and patches are already upstream - 2.6.23-rc1. A fix for problem 1) is still being developed. 3. Describe the Business Case Existing bugs are preventing Linux customers from using PCI-X hotplug on IBM System x servers. Performance Assistance Required? no Benefits Feature parity with Windows. 4. Sponsor Priority 1 IBM Confidential no Code Contribution ? IBM code Upstream Acceptance In Progress 5. Hardware to Red Hat: Already available on site 6. PM Contact: Monte Knutson, mknutson.com, 877-894-1495 7. Technical Contact: Chris McDermott, lcm.com, 503-578-5726
1. Feature Id 201068 Feature Name Include PCI-X hot plug updates/patches from upstream. Sponsor xSeries Category xSeries Request Type Driver - Update Version 2. Short Description There are bugs in acpiphp that prevent PCI-X hotplug operations from working in IBM System x servers (and likely in other servers that support PCI-X hotplug). The known issues are: 1) PCI memory resource mis-allocation on systems where PCI-X slots exist directly below a PHB in the PCI hierarchy and PCI memory resources aren't obtainable from the PHB config space. 2) SERR during PCI-X hp operation because acpiphp incorrectly writes _HPP parameters to the PHB config space. 3) acpiphp fails to power off slot due to missing logic to detect _EJ0 in PCI core Problems 2) and 3) have been fixed and patches are already upstream - 2.6.23-rc1. A fix for problem 1) is still being developed. 3. Describe the Business Case Existing bugs are preventing Linux customers from using PCI-X hotplug on IBM System x servers. Performance Assistance Required? no Benefits Feature parity with Windows. 4. Sponsor Priority 1 IBM Confidential no Code Contribution ? IBM code Upstream Acceptance In Progress 5. Hardware to Red Hat: Already available on site 6. PM Contact: Monte Knutson, mknutson.com, 877-894-1495 7. Technical Contact: Chris McDermott, lcm.com, 503-578-5726 =Comment: #0================================================= Stephanie A. Glass <sglass@us.ibm.com> - 2007-09-20 15:26 EDT 1. Feature Id 201068 Feature Name Include PCI-X hot plug updates/patches from upstream. Sponsor xSeries Category xSeries Request Type Driver - Update Version 2. Short Description There are bugs in acpiphp that prevent PCI-X hotplug operations from working in IBM System x servers (and likely in other servers that support PCI-X hotplug). The known issues are: 1) PCI memory resource mis-allocation on systems where PCI-X slots exist directly below a PHB in the PCI hierarchy and PCI memory resources aren't obtainable from the PHB config space. 2) SERR during PCI-X hp operation because acpiphp incorrectly writes _HPP parameters to the PHB config space. 3) acpiphp fails to power off slot due to missing logic to detect _EJ0 in PCI core Problems 2) and 3) have been fixed and patches are already upstream - 2.6.23-rc1. A fix for problem 1) is still being developed. 3. Describe the Business Case Existing bugs are preventing Linux customers from using PCI-X hotplug on IBM System x servers. Performance Assistance Required? no Benefits Feature parity with Windows. 4. Sponsor Priority 1 IBM Confidential no Code Contribution ? IBM code Upstream Acceptance In Progress 5. Hardware to Red Hat: Already available on site 6. PM Contact: Monte Knutson, mknutson.com, 877-894-1495 7. Technical Contact: Chris McDermott, lcm.com, 503-578-5726 Patch for problem 2 and 3 have been posted on RHKL. Any updates to development of problem 1? (In reply to comment #5) > Any updates to development of problem 1? Yes. Patches for problem 1 are complete and have been included in Linus' git tree, queued up for 2.6.24-rc1. A backport of these patches for RHEL4(.7) was attached last week to Red Hat Issue Tracker 126181. Andrius, Going to test the 5.1 patches this week and then move to test the 4.7 ones. Andrius, I have tested the 4.7 ones with success. Unfortunately they break the kABI so we have to figure something out. Closing as CANTFIX since the 4.7 patch breaks kABI.
Red Hat Bugzilla is now using version 3.4 of the Bugzilla codebase and therefore this bug will need to be re-verified against the new release. With the updated code this bug may no longer be relevant or may have been fixed in the new code. Updating bug version to 3.4.