Re: memtest 4.20+ does not work with -cpu host

[Avi Kivity <avi@redhat.com>]

On 09/10/2012 02:29 PM, Paolo Bonzini wrote:
> Il 10/09/2012 13:06, Peter Lieven ha scritto:
>> 
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_entry: vcpu 0
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_exit: reason MSR_READ rip
>> 0x11478 info 0 0
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_msr: msr_read 194 = 0x0 (#GP)
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_inj_exception: #GP (0x0)
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_entry: vcpu 0
>> qemu-kvm-1.0.1-5107 [007] 410771.148000: kvm_exit: reason TRIPLE_FAULT
>> rip 0x11478 info 0 0
> 
> Memory controller MSR:
> 
> static float getNHMmultiplier(void)
> {
>         unsigned int msr_lo, msr_hi;
>         float coef;
> 
>         /* Find multiplier (by MSR) */
>         /* First, check if Flexible Ratio is Enabled */
>         rdmsr(0x194, msr_lo, msr_hi);
>         if((msr_lo >> 16) & 1){
>                 coef = (msr_lo >> 8) & 0xFF;
>          } else {
>                 rdmsr(0xCE, msr_lo, msr_hi);
>                 coef = (msr_lo >> 8) & 0xFF;
>          }
> 
>         return coef;
> }
> 

The SDM only mentions 0x194 as a machine check exception register
(recorded R12).

In the Architectural MSRs (how I love that name) section 18AH-197H are
listed as reserved.

In the Nehalem section they're not there at all.



-- 
error compiling committee.c: too many arguments to function