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.
>
> 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 ?
#define H_HPT_RESIZE_PREPARE 0xf003
#define H_HPT_RESIZE_COMMIT 0xf004
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