00000000000037c0 <svm_get_msr>:
...
387e: 66 90 xchg %ax,%ax
3880: 0f 84 8a 00 00 00 je 3910 <svm_get_msr+0x150>
3886: 66 90 xchg %ax,%ax
3888: 0f 86 c2 01 00 00 jbe 3a50 <svm_get_msr+0x290>
388e: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
3895: 48 8b 80 08 06 00 00 mov 0x608(%rax),%rax
389c: 48 89 02 mov %rax,(%rdx)
389f: 90 nop
38a0: 31 c0 xor %eax,%eax
38a2: c3 retq
38a3: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
38a8: 81 fe d9 01 00 00 cmp $0x1d9,%esi
38ae: 0f 84 7c 00 00 00 je 3930 <svm_get_msr+0x170>
38b4: 0f 86 46 01 00 00 jbe 3a00 <svm_get_msr+0x240>
38ba: 81 fe db 01 00 00 cmp $0x1db,%esi
38c0: 0f 84 ca 01 00 00 je 3a90 <svm_get_msr+0x2d0>
38c6: 81 fe dc 01 00 00 cmp $0x1dc,%esi
38cc: 0f 1f 40 00 nopl 0x0(%rax)
38d0: 75 98 jne 386a <svm_get_msr+0xaa>
38d2: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
38d9: 48 8b 80 80 06 00 00 mov 0x680(%rax),%rax
38e0: 48 89 02 mov %rax,(%rdx)
38e3: eb bb jmp 38a0 <svm_get_msr+0xe0>
38e5: 0f 1f 00 nopl (%rax)
38e8: 48 83 bf 78 28 00 00 cmpq $0x0,0x2878(%rdi)
38ef: 00
38f0: 0f 85 82 01 00 00 jne 3a78 <svm_get_msr+0x2b8>
38f6: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
38fd: 48 8b 48 50 mov 0x50(%rax),%rcx
3901: 0f 31 rdtsc
3903: 48 01 c8 add %rcx,%rax
# this is svm_get_msr+0x146
3906: 48 89 02 mov %rax,(%rdx)
3909: eb 95 jmp 38a0 <svm_get_msr+0xe0>
390b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3910: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
3917: 48 8b 80 00 06 00 00 mov 0x600(%rax),%rax
391e: 48 89 02 mov %rax,(%rdx)
3921: e9 7a ff ff ff jmpq 38a0 <svm_get_msr+0xe0>
3926: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
392d: 00 00 00
3930: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
3937: 48 8b 80 70 06 00 00 mov 0x670(%rax),%rax
393e: 48 89 02 mov %rax,(%rdx)
3941: e9 5a ff ff ff jmpq 38a0 <svm_get_msr+0xe0>
3946: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
394d: 00 00 00
3950: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
3957: 48 8b 80 28 06 00 00 mov 0x628(%rax),%rax
395e: 48 89 02 mov %rax,(%rdx)
3961: e9 3a ff ff ff jmpq 38a0 <svm_get_msr+0xe0>
3966: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
396d: 00 00 00
3970: 48 c7 02 65 00 00 01 movq $0x1000065,(%rdx)
3977: e9 24 ff ff ff jmpq 38a0 <svm_get_msr+0xe0>
397c: 0f 1f 40 00 nopl 0x0(%rax)
3980: 48 8b 87 e0 27 00 00 mov 0x27e0(%rdi),%rax
3987: 48 8b 80 10 06 00 00 mov 0x610(%rax),%rax
398e: 48 89 02 mov %rax,(%rdx)
3991: e9 0a ff ff ff jmpq 38a0 <svm_get_msr+0xe0>
3996: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
399d: 00 00 00
...
We use the ubunto 2.6.24 kernel (http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-hardy.git;a=summary)
They have a few more patches applied:
http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-hardy.git;a=history;f=include/asm-x86/msr.h;h=cfe169475b5b50a448326ef3c34f50100ac83faf;hb=HEAD
Maybe those last 2 patches can cause the problem?
> -----Original Message-----
> From: Avi Kivity [mailto:avi@xxxxxxxxxx]
> Sent: Montag, 16. November 2009 11:52
> To: Dietmar Maurer
> Cc: kvm
> Subject: Re: problem wit svm_get_msr on kvm-kmod-2.6.31.6
>
> On 11/16/2009 12:46 PM, Dietmar Maurer wrote:
> >> Nothing changed between these two versions to warrant this.
> >>
> > Oh, sorry - the one which works is kvm-kmod-2.6.30.1
> >
> >
> >> Can you post a disassembly of svm_get_msr() around the offending
> >> address?
> >>
> > Please can you tell me how to do that?
> >
> >
>
> objdump -Dr .../kvm-amd.ko
>
> Look at the start address of svm_get_msr (search for the name), add
> 0x146 (from ":kvm_amd:svm_get_msr+0x146/0x300"), list ~30 lines above
> and below that.
>
> --
> error compiling committee.c: too many arguments to function
>
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