Bug 1481180
| Summary: | iommu platform support for ipxe [rhel-7.4.z] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Oneata Mircea Teodor <toneata> |
| Component: | ipxe | Assignee: | jason wang <jasowang> |
| ipxe sub component: | ipxe-roms | QA Contact: | FuXiangChun <xfu> |
| Status: | CLOSED ERRATA | Docs Contact: | |
| Severity: | high | ||
| Priority: | high | CC: | ailan, chayang, hhan, jasowang, jherrman, juzhang, libvirt-qe, linville, michen, mtessun, wexu, xfu, yuma |
| Version: | 7.4 | Keywords: | ZStream |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | ipxe-20170123-1.git4e85b27.el7_4.1 | Doc Type: | Bug Fix |
| Doc Text: |
Previously, guest virtual machines that use the iPXE environment were not able to boot over a network if the Input/Output Memory Management Unit (IOMMU) mode was set for the virtio-net device. With this update, iPXE handles IOMMU setting correctly, and guests are able to boot properly in the described scenario.
|
Story Points: | --- |
| Clone Of: | 1467887 | Environment: | |
| Last Closed: | 2017-09-05 11:32:40 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1467887 | ||
| Bug Blocks: | |||
|
Description
Oneata Mircea Teodor
2017-08-14 10:05:17 UTC
Fix included in ipxe-20170123-1.git4e85b27.el7_4.1 Verified component version as below: ipxe-roms-qemu-20170123-1.git4e85b27.el7_4.1.noarch ipxe-roms-20170123-1.git4e85b27.el7_4.1.noarch ipxe-bootimgs-20170123-1.git4e85b27.el7_4.1.noarch qemu-kvm-rhev-2.9.0-16.el7_4.5.x86_64 seabios-1.10.2-3.el7_4.1.x86_64 3.10.0-693.1.1.el7.x86_64 steps: 1. qemu-kvm cmd: /usr/libexec/qemu-kvm ... -device virtio-blk-pci,drive=system1,disable-legacy=on,disable-modern=off,id=boot_disk,iommu_platform=on,ats=on -drive file=/root/rhel74-bk.qcow2,format=qcow2,if=none,id=system1 \ -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:7e:af:e6,iommu_platform=on,disable-modern=off,disable-legacy=on -netdev tap,id=hostnet1,vhost=on \ .... 2. Add "iommu=pt intel_iommu=on" to host kernel line 3. Add "intel_iommu=on" guest kernel line Test result: Guest can boot successfully via NIC. and NIC works in guest. Hi Jason, According to this test result. Can QE verify this bug? Append a test result. 1. First, I try to reproduce this bug with unfix ipxe-roms-20170123-1.git4e85b27.el7.noarch. result: ipxe cann't find NIC, and output this message as below: ........ Cound not open net0: Invalid argument (http://ipxe.org/1c5c4002) No more network devices ..... 2. Then, I use fixed ipxe-roms-20170123-1.git4e85b27.el7_4.1.noarch to boot guest. result: ipxe can find net0 correctly and connect dhcp server successfully. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2017:2589 |