Re: [RFCv2 6/9] pseries: Add hypercall wrappers for hash page table resizing
From: Anshuman Khandual <hidden>
Date: 2016-02-01 07:12:03
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.
quoted hunk ↗ jump to hunk
Signed-off-by: David Gibson <redacted> --- 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