On 09/07/2011 07:45 PM, Liu, Jinsong wrote:
Avi Kivity wrote:
>>
>> --- a/arch/x86/include/asm/msr-index.h
>> +++ b/arch/x86/include/asm/msr-index.h
>> @@ -229,6 +229,8 @@
>> #define MSR_IA32_APICBASE_ENABLE (1<<11)
>> #define MSR_IA32_APICBASE_BASE (0xfffff<<12)
>>
>> +#define MSR_IA32_TSCDEADLINE 0x000006e0
>> +
>> #define MSR_IA32_UCODE_WRITE 0x00000079
>> #define MSR_IA32_UCODE_REV 0x0000008b
>>
>
> Need to add to msrs_to_save so live migration works.
>
2 questions:
1). how about add to emulated_msrs instead of msrs_to_save? msrs_to_save
modified at runtime and depend on capacibility of host cpu.
Look at kvm_init_msrs_list(), it does the checks.
2). do we need add code at qemu (kvm_get_msrs/ kvm_put_msrs) to expose
MSR_IA32_TSCDEADLINE to userspace?
It should be automatic. Better check it though that you can
live-migrate a guest that uses TSC deadline. Please add a testcase to
kvm-unit-tests.git (there's x86/apic.c, can probably be added there easily).
--
error compiling committee.c: too many arguments to function
