On Wed, Mar 25, 2015 at 06:46:28PM -0600, Alex Williamson wrote:
>On Thu, 2015-03-26 at 10:20 +1100, Gavin Shan wrote:
>> The set of constants for PE states defined in uapi/linux/vfio.h is
>> duplicated to uapi/asm/eeh.h. The patch removes the set from the
>> former.
>>
>> Signed-off-by: Gavin Shan <gws...@linux.vnet.ibm.com>
>> ---
>> include/uapi/linux/vfio.h | 5 -----
>> 1 file changed, 5 deletions(-)
>>
>> diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h
>> index d81c17f..3fd1e86 100644
>> --- a/include/uapi/linux/vfio.h
>> +++ b/include/uapi/linux/vfio.h
>> @@ -492,11 +492,6 @@ struct vfio_eeh_pe_op {
>> #define VFIO_EEH_PE_UNFREEZE_IO 2 /* Enable IO for frozen
>> PE */
>> #define VFIO_EEH_PE_UNFREEZE_DMA 3 /* Enable DMA for frozen PE */
>> #define VFIO_EEH_PE_GET_STATE 4 /* PE state retrieval
>> */
>> -#define VFIO_EEH_PE_STATE_NORMAL 0 /* PE in functional state */
>> -#define VFIO_EEH_PE_STATE_RESET 1 /* PE reset in progress */
>> -#define VFIO_EEH_PE_STATE_STOPPED 2 /* Stopped DMA and IO */
>> -#define VFIO_EEH_PE_STATE_STOPPED_DMA 4 /* Stopped DMA only
>> */
>> -#define VFIO_EEH_PE_STATE_UNAVAIL 5 /* State unavailable */
>> #define VFIO_EEH_PE_RESET_DEACTIVATE 5 /* Deassert PE reset
>> */
>> #define VFIO_EEH_PE_RESET_HOT 6 /* Assert hot reset
>> */
>> #define VFIO_EEH_PE_RESET_FUNDAMENTAL 7 /* Assert fundamental
>> reset */
>
>How do you know that nobody depends on these defines? I thought the
>suggestion was to use the EEH_* defines for error injection, not to
>remove existing VFIO_EEH_* defines. You could certainly redefine these
>in terms of EEH_* defines instead. Thanks,
>
QEMU should be the first user to utilize the EEH capability exposed by
the host kernel, and I believe QEMU doesn't use those constants yet.
So it's right time to move those constants to uapi/asm/eeh.h. Once some
one starts to use them, it's impossible to do so.
Thanks,
Gavin
>Alex
>
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