On 02/02/2016 06:28 AM, David Gibson wrote:
> On Mon, Feb 01, 2016 at 12:41:31PM +0530, Anshuman Khandual wrote:
>> On 01/29/2016 10:54 AM, David Gibson wrote:
>>> This adds the hypercall numbers and wrapper functions for the hash page
>>> table resizing hypercalls.
>>>
>>> These are experimental "platform specific" values for now, until we have a
>>> formal PAPR update.
>>>
>>> It also adds a new firmware feature flat to track the presence of the
>>> HPT resizing calls.
>>
>> Its a flag ....................... ^^^^^^^ here.
>
> Oops, thanks.
>
>>
>>>
>>> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au>
>>> ---
>>> arch/powerpc/include/asm/firmware.h | 5 +++--
>>> arch/powerpc/include/asm/hvcall.h | 2 ++
>>> arch/powerpc/include/asm/plpar_wrappers.h | 12 ++++++++++++
>>> arch/powerpc/platforms/pseries/firmware.c | 1 +
>>> 4 files changed, 18 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/powerpc/include/asm/firmware.h
>>> b/arch/powerpc/include/asm/firmware.h
>>> index b062924..32435d2 100644
>>> --- a/arch/powerpc/include/asm/firmware.h
>>> +++ b/arch/powerpc/include/asm/firmware.h
>>> @@ -42,7 +42,7 @@
>>> #define FW_FEATURE_SPLPAR ASM_CONST(0x0000000000100000)
>>> #define FW_FEATURE_LPAR ASM_CONST(0x0000000000400000)
>>> #define FW_FEATURE_PS3_LV1 ASM_CONST(0x0000000000800000)
>>> -/* Free ASM_CONST(0x0000000001000000) */
>>> +#define FW_FEATURE_HPT_RESIZE ASM_CONST(0x0000000001000000)
>>> #define FW_FEATURE_CMO ASM_CONST(0x0000000002000000)
>>> #define FW_FEATURE_VPHN ASM_CONST(0x0000000004000000)
>>> #define FW_FEATURE_XCMO ASM_CONST(0x0000000008000000)
>>> @@ -66,7 +66,8 @@ enum {
>>> FW_FEATURE_MULTITCE | FW_FEATURE_SPLPAR | FW_FEATURE_LPAR |
>>> FW_FEATURE_CMO | FW_FEATURE_VPHN | FW_FEATURE_XCMO |
>>> FW_FEATURE_SET_MODE | FW_FEATURE_BEST_ENERGY |
>>> - FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN,
>>> + FW_FEATURE_TYPE1_AFFINITY | FW_FEATURE_PRRN |
>>> + FW_FEATURE_HPT_RESIZE,
>>> FW_FEATURE_PSERIES_ALWAYS = 0,
>>> FW_FEATURE_POWERNV_POSSIBLE = FW_FEATURE_OPAL,
>>> FW_FEATURE_POWERNV_ALWAYS = 0,
>>> diff --git a/arch/powerpc/include/asm/hvcall.h
>>> b/arch/powerpc/include/asm/hvcall.h
>>> index e3b54dd..195e080 100644
>>> --- a/arch/powerpc/include/asm/hvcall.h
>>> +++ b/arch/powerpc/include/asm/hvcall.h
>>> @@ -293,6 +293,8 @@
>>>
>>> /* Platform specific hcalls, used by KVM */
>>> #define H_RTAS 0xf000
>>> +#define H_RESIZE_HPT_PREPARE 0xf003
>>> +#define H_RESIZE_HPT_COMMIT 0xf004
>>
>> This sound better and matches FW_FEATURE_HPT_RESIZE ?
>
> I'm not quite sure what you're suggesting here.
>
>> #define H_HPT_RESIZE_PREPARE 0xf003
>> #define H_HPT_RESIZE_COMMIT 0xf004
Just little bit of change of name of the macro like this
H_RESIZE_HPT_PREPARE --> H_HPT_RESIZE_PREPARE
H_RESIZE_HPT_COMMIT --> H_HPT_RESIZE_COMMIT
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