Bug 472138
| Summary: | Missing svm flag in cpuinfo for 32-bit RHEL4 | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 4 | Reporter: | Dave Botsch <botsch> |
| Component: | kernel | Assignee: | Red Hat Kernel Manager <kernel-mgr> |
| Status: | CLOSED WONTFIX | QA Contact: | Martin Jenner <mjenner> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 4.9 | ||
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | i686 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-11-03 17:35:12 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: | |||
Description of problem: On multiple motherboard vendors with virtualization capable Opteron 2216s, 32-bit RHEL4 is not showing the SVM flag in the output of /proc/cpuinfo. If one reboots into 64-bit RHEL4, the svm flag is there. Version-Release number of selected component (if applicable): How reproducible: 100% of the time Steps to Reproduce: 1.Choose a mobo - two I've tried are KFSN4-DRE and Tyan S2927 2.Boot 32-bit RHEL4 3. cat /proc/cpuinfo or run lshw Actual results: svm flag is not present under rhel4-32bit Expected results: svm flag should be present under rhel4-32bit Additional info: As I said, this is only happening w. 32-bit RHEL4. In the case of the Tyan mobo, Tyan has confirmed that other 32-bit linux distros (they did not tell me which one) DO indeed show the svm flag. cpuid shows the following on both motherboards (regardless of 32-bit or 64-bit rhel4): AMD feature flags (0x80000001/ecx): LAHF/SAHF supported in 64-bit mode = true CMP Legacy = true SVM: secure virtual machine = true AltMovCr8 = true SVM Secure Virtual Machine (0x8000000a/eax): SvmRev: SVM revision = 0x1 (1) SVM Secure Virtual Machine (0x8000000a/edx): LBR virtualization = false