Re: [patch 3/3] kvm-s390: provide general purpose registers via kvm_run

[Christian Borntraeger <borntraeger@de.ibm.com>]

On 22/12/11 13:34, Avi Kivity wrote:
>> The general purpose registers are often necessary to handle SIE exits.
>> Avoid additional ioctls by providing the guest registers in the r/w 
>> section of the kvm_run structure.
>>
> 
> This is only needed for S390_UCONTROL?

No for the standard path. It was more like a "we copy the regs around
anyway inside the kernel, so why not use kvm_run as a place to store 
the guest regs". So I will probably also have a look at floating point
regs and access registers.

> 
>>  
>>  struct sync_rw_regs {
>> +	__u64 gprs[16];	/* general purpose registers */
>>  };
>>  #endif
> 
> Don't you have to remove arch.guest_gprs too? (interesting approach btw).

Yes. Done