Description of problem: I have Fedora 9 x86_64 (on Opteron 150 CPU) in which I have installed VMware Workstation 6.0.4. Inside VMWare I installed Fedora 9 i686, which I upgraded via yum to rawhide. Now, If I enable VMI support in VMWare Workstation (option called "Enabling Paravirtual Kernel Support"), booting fedora fails at the beginning with: #v+ initrd /initrd-2.6.27-0.183.rc0.git14.fc10.i686.img [Linux-initrd @ 0x1fad3000, 0x40c830 bytes] BUG: Int 6: CR2 00000000 EDI 00000000 ESI 00000000 EBP c07daf20 ESP c07daf0c EBX 04000000 EDX 00000006 ECX c0449af4 EAX 04000000 err 00000000 EIP c07f3888 CS 00000060 flg 00010006 Stack: c00cb000 c07daf34 c07f1491 20000000 00000000 20000000 c07dafc8 c07e4d13 c042cb82 00000086 c07dafd8 1fedf830 00000000 1fad3000 00000000 0040c830 1fad3000 c0449af4 00000004 00000046 00000000 00000000 0000009b 00000003 #v- Disabling VMI in VMWare workstation let Rawhide boot and function normally. After googling I saw that similar problem was caused recently by missing "nopl" opcode in some Cyrix CPUs. Is this a bug in fedora's VMI kernel implementation or in VMWare Workstatio's emulation? How reproducible: Always Steps to Reproduce: 1. Enable VMI in VMWare Workstation 2. Boot Fedora 2.6.27-rc0 kernel Actual results: Halt with above register dump. Expected results: Normal boot.
Fedora 10 with kernel 2.6.27-0.372.rc8.i686 boots on VMWare Workstation 6.5.0 build-118166 with VMI enabled.