Hi, I am getting a frozen guest when migrating from an Opteron 6274 host (amd fam15h) to an Opteron 6174 host (amd fam10h). The live migration completes succesfully, but the guest is frozen: vcn screen is still there, but no input is possible and no kernel output is seen. Trying "c" on the qemu-monitor does not help. I am using "-cpu Opteron_G3" which I assumed would be ok for both host cpus. In the opposite direction (migrating from an amd fam10h host to an amdfam15h host) the guest continues to run on the destination. However, on most of these successfull live migrations, I notice a "clocksource unstable" message on the guest kernel (using the default kvm-clock clocksource) e.g. Clocksource tsc unstable (delta = -1500533439 ns) Same situation (guest runs on destination with clocksource unstable message) happens when migrating between fam15h hosts (I have not tried between fam10h hosts) Changing the clocksource (tsc, acpi_pm, hpet) does not solve the issue. Also tried with "-cpu kvm64" with same result. qemu-kvm version: 0.15.1, 1.0 or qemu-kvm/master Host kernel: 3.0.15 (on both hosts) Guest kernel: 3.0.6 or 3.2 this is the qemu-kvm command line used on the source host: " kvm -enable-kvm -m 1024 -smp 1 -cpu Opteron_G3,check -drive \ file=/opt/test.img,if=none,id=drive-virtio-disk1,format=raw,cache=writethrough,boot=on -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -monitor stdio -vnc 0.0.0.0:6 -vga std -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 " The destination host has the same command line with an added "-incoming tcp:4444". I have mainly tested this with non-shared storage (but also shared storage has the same result). Migration is triggered with "migrate -b tcp:destip:4444" Do the TSC microarchitecture changes in amdfam15h (see AMD SW optimiization guide for fam15h, 47414 Rev 3.02 Appendix E) affect pvclock stability on migration in same family or across families? cpuid information follows in case it's helpful. 6274 host: eax in eax ebx ecx edx 00000000 0000000d 68747541 444d4163 69746e65 00000001 00600f12 02100800 1e98220b 178bfbff 00000002 00000000 00000000 00000000 00000000 00000003 00000000 00000000 00000000 00000000 00000004 00000000 00000000 00000000 00000000 00000005 00000040 00000040 00000003 00000000 00000006 00000000 00000000 00000001 00000000 00000007 00000000 00000000 00000000 00000000 00000008 00000000 00000000 00000000 00000000 00000009 00000000 00000000 00000000 00000000 0000000a 00000000 00000000 00000000 00000000 0000000b 00000000 00000000 00000000 00000000 0000000c 00000000 00000000 00000000 00000000 0000000d 00000000 00000000 00000000 00000000 80000000 8000001e 68747541 444d4163 69746e65 80000001 00600f12 30000000 01c9bfff 2fd3fbff 80000002 20444d41 6574704f 286e6f72 20294d54 80000003 636f7250 6f737365 32362072 20203437 80000004 20202020 20202020 20202020 00202020 80000005 ff20ff18 ff20ff30 10040140 40020140 80000006 64000000 64004200 08008140 0060e140 80000007 00000000 00000000 00000000 000003d9 80000008 00003030 00000000 0000500f 00000000 80000009 00000000 00000000 00000000 00000000 8000000a 00000001 00010000 00000000 000014ff 8000000b 00000000 00000000 00000000 00000000 8000000c 00000000 00000000 00000000 00000000 8000000d 00000000 00000000 00000000 00000000 8000000e 00000000 00000000 00000000 00000000 8000000f 00000000 00000000 00000000 00000000 80000010 00000000 00000000 00000000 00000000 80000011 00000000 00000000 00000000 00000000 80000012 00000000 00000000 00000000 00000000 80000013 00000000 00000000 00000000 00000000 80000014 00000000 00000000 00000000 00000000 80000015 00000000 00000000 00000000 00000000 80000016 00000000 00000000 00000000 00000000 80000017 00000000 00000000 00000000 00000000 80000018 00000000 00000000 00000000 00000000 80000019 f020f018 64000000 00000000 00000000 8000001a 00000003 00000000 00000000 00000000 8000001b 000000ff 00000000 00000000 00000000 8000001c 00000000 80032013 00010200 8000000f 8000001d 00000000 00000000 00000000 00000000 8000001e 00000022 00000101 00000100 00000000 Vendor ID: "AuthenticAMD"; CPUID level 13 AMD-specific functions Version 00600f12: Family: 15 Model: 1 [] Standard feature flags 178bfbff: Floating Point Unit Virtual Mode Extensions Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions MTRR - Memory Type Range Registers Global paging extension Machine Check Architecture Conditional Move Instruction PAT - Page Attribute Table PSE-36 - Page Size Extensions 19 - reserved MMX instructions FXSAVE/FXRSTOR 25 - reserved 26 - reserved 28 - reserved Generation: 15 Model: 1 Extended feature flags 2fd3fbff: Floating Point Unit Virtual Mode Extensions Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions MTRR - Memory Type Range Registers Global paging extension Machine Check Architecture Conditional Move Instruction PAT - Page Attribute Table PSE-36 - Page Size Extensions 20 - reserved AMD MMX Instruction Extensions MMX instructions FXSAVE/FXRSTOR 25 - reserved 26 - reserved 27 - reserved 29 - reserved Processor name string: AMD Opteron(TM) Processor 6274 L1 Cache Information: 2/4-MB Pages: Data TLB: associativity 255-way #entries 32 Instruction TLB: associativity 255-way #entries 24 4-KB Pages: Data TLB: associativity 255-way #entries 32 Instruction TLB: associativity 255-way #entries 48 L1 Data cache: size 16 KB associativity 4-way lines per tag 1 line size 64 L1 Instruction cache: size 64 KB associativity 2-way lines per tag 1 line size 64 L2 Cache Information: 2/4-MB Pages: Data TLB: associativity 4-way #entries 0 Instruction TLB: associativity L2 off #entries 0 4-KB Pages: Data TLB: associativity 4-way #entries 0 Instruction TLB: associativity 2-way #entries 0 size 8 KB associativity L2 off lines per tag 129 line size 64 Advanced Power Management Feature Flags Has temperature sensing diode Maximum linear address: 48; maximum phys address 48 6174 host: eax in eax ebx ecx edx 00000000 00000005 68747541 444d4163 69746e65 00000001 00100f91 110c0800 00802009 178bfbff 00000002 00000000 00000000 00000000 00000000 00000003 00000000 00000000 00000000 00000000 00000004 00000000 00000000 00000000 00000000 00000005 00000040 00000040 00000003 00000000 80000000 8000001b 68747541 444d4163 69746e65 80000001 00100f91 300004bf 000837ff efd3fbff 80000002 20444d41 6574704f 286e6f72 20296d74 80000003 636f7250 6f737365 31362072 00003437 80000004 00000000 00000000 00000000 00000000 80000005 ff30ff10 ff30ff20 40020140 40020140 80000006 20800000 42004200 02008140 0050d140 80000007 00000000 00000000 00000000 000001f9 80000008 00003030 00000000 0000400b 00000000 80000009 00000000 00000000 00000000 00000000 8000000a 00000001 00000040 00000000 0000040f 8000000b 00000000 00000000 00000000 00000000 8000000c 00000000 00000000 00000000 00000000 8000000d 00000000 00000000 00000000 00000000 8000000e 00000000 00000000 00000000 00000000 8000000f 00000000 00000000 00000000 00000000 80000010 00000000 00000000 00000000 00000000 80000011 00000000 00000000 00000000 00000000 80000012 00000000 00000000 00000000 00000000 80000013 00000000 00000000 00000000 00000000 80000014 00000000 00000000 00000000 00000000 80000015 00000000 00000000 00000000 00000000 80000016 00000000 00000000 00000000 00000000 80000017 00000000 00000000 00000000 00000000 80000018 00000000 00000000 00000000 00000000 80000019 f0300000 60100000 00000000 00000000 8000001a 00000003 00000000 00000000 00000000 8000001b 0000001f 00000000 00000000 00000000 Vendor ID: "AuthenticAMD"; CPUID level 5 AMD-specific functions Version 00100f91: Family: 15 Model: 9 [] Standard feature flags 178bfbff: Floating Point Unit Virtual Mode Extensions Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions MTRR - Memory Type Range Registers Global paging extension Machine Check Architecture Conditional Move Instruction PAT - Page Attribute Table PSE-36 - Page Size Extensions 19 - reserved MMX instructions FXSAVE/FXRSTOR 25 - reserved 26 - reserved 28 - reserved Generation: 15 Model: 9 Extended feature flags efd3fbff: Floating Point Unit Virtual Mode Extensions Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions MTRR - Memory Type Range Registers Global paging extension Machine Check Architecture Conditional Move Instruction PAT - Page Attribute Table PSE-36 - Page Size Extensions 20 - reserved AMD MMX Instruction Extensions MMX instructions FXSAVE/FXRSTOR 25 - reserved 26 - reserved 27 - reserved 29 - reserved 3DNow! Instruction Extensions 3DNow instructions Processor name string: AMD Opteron(tm) Processor 6174 L1 Cache Information: 2/4-MB Pages: Data TLB: associativity 255-way #entries 48 Instruction TLB: associativity 255-way #entries 16 4-KB Pages: Data TLB: associativity 255-way #entries 48 Instruction TLB: associativity 255-way #entries 32 L1 Data cache: size 64 KB associativity 2-way lines per tag 1 line size 64 L1 Instruction cache: size 64 KB associativity 2-way lines per tag 1 line size 64 L2 Cache Information: 2/4-MB Pages: Data TLB: associativity L2 off #entries 128 Instruction TLB: associativity L2 off #entries 0 4-KB Pages: Data TLB: associativity 2-way #entries 0 Instruction TLB: associativity 2-way #entries 0 size 2 KB associativity L2 off lines per tag 129 line size 64 Advanced Power Management Feature Flags Has temperature sensing diode Maximum linear address: 48; maximum phys address 48 VM (with -cpu Opteron_G3) eax in eax ebx ecx edx 00000000 00000005 68747541 444d4163 69746e65 00000001 00000f61 00000800 80802001 078bfbfd 00000002 00000001 00000000 00000000 002c307d 00000003 00000000 00000000 00000000 00000000 00000004 00000000 00000000 00000000 00000000 00000005 00000000 00000000 00000003 00000000 80000000 80000008 68747541 444d4163 69746e65 80000001 00000f61 00000000 000000e5 2191abfd 80000002 20444d41 6574704f 206e6f72 78783332 80000003 65472820 2033206e 73616c43 704f2073 80000004 6f726574 0000296e 00000000 00000000 80000005 01ff01ff 01ff01ff 40020140 40020140 80000006 00000000 42004200 02008140 00000000 80000007 00000000 00000000 00000000 00000000 80000008 00003028 00000000 00000000 00000000 Vendor ID: "AuthenticAMD"; CPUID level 5 AMD-specific functions Version 00000f61: Family: 15 Model: 6 [] Standard feature flags 078bfbfd: Floating Point Unit Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions MTRR - Memory Type Range Registers Global paging extension Machine Check Architecture Conditional Move Instruction PAT - Page Attribute Table PSE-36 - Page Size Extensions 19 - reserved MMX instructions FXSAVE/FXRSTOR 25 - reserved 26 - reserved Generation: 15 Model: 6 Extended feature flags 2191abfd: Floating Point Unit Debugging Extensions Page Size Extensions Time Stamp Counter (with RDTSC and CR4 disable bit) Model Specific Registers with RDMSR & WRMSR PAE - Page Address Extensions Machine Check Exception COMPXCHG8B Instruction APIC SYSCALL/SYSRET or SYSENTER/SYSEXIT instructions Global paging extension Conditional Move Instruction PAT - Page Attribute Table 20 - reserved MMX instructions FXSAVE/FXRSTOR 29 - reserved Processor name string: AMD Opteron 23xx (Gen 3 Class Opteron) L1 Cache Information: 2/4-MB Pages: Data TLB: associativity 1-way #entries 255 Instruction TLB: associativity 1-way #entries 255 4-KB Pages: Data TLB: associativity 1-way #entries 255 Instruction TLB: associativity 1-way #entries 255 L1 Data cache: size 64 KB associativity 2-way lines per tag 1 line size 64 L1 Instruction cache: size 64 KB associativity 2-way lines per tag 1 line size 64 L2 Cache Information: 2/4-MB Pages: Data TLB: associativity L2 off #entries 0 Instruction TLB: associativity L2 off #entries 0 4-KB Pages: Data TLB: associativity 2-way #entries 0 Instruction TLB: associativity 2-way #entries 0 size 2 KB associativity L2 off lines per tag 129 line size 64 Advanced Power Management Feature Flags Maximum linear address: 48; maximum phys address 40 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
