* [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit @ 2016-02-17 5:07 Michael Neuling 2016-02-17 5:07 ` [PATCH 2/2] powerpc: Add POWER9 cputable entry Michael Neuling 2016-02-17 14:59 ` [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Aneesh Kumar K.V 0 siblings, 2 replies; 10+ messages in thread From: Michael Neuling @ 2016-02-17 5:07 UTC (permalink / raw) To: Michael Ellerman, Benjamin Herrenschmidt Cc: linuxppc-dev, Aneesh Kumar K.V, Michael Neuling Subcores isn't really part of the 2.07 architecture but currently we turn it on using the 2.07 feature bit. Subcores is really a POWER8 specific feature. This adds a new CPU_FTR bit just for subcores and moves the subcore init code over to use this. Signed-off-by: Michael Neuling <mikey@neuling.org> --- arch/powerpc/include/asm/cputable.h | 3 ++- arch/powerpc/platforms/powernv/subcore.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index b118072..a47e175 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -196,6 +196,7 @@ enum { #define CPU_FTR_DAWR LONG_ASM_CONST(0x0400000000000000) #define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000) #define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x1000000000000000) +#define CPU_FTR_SUBCORE LONG_ASM_CONST(0x2000000000000000) #ifndef __ASSEMBLY__ @@ -443,7 +444,7 @@ enum { CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ - CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP) + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c index 503a73f..0babef1 100644 --- a/arch/powerpc/platforms/powernv/subcore.c +++ b/arch/powerpc/platforms/powernv/subcore.c @@ -407,7 +407,7 @@ static DEVICE_ATTR(subcores_per_core, 0644, static int subcore_init(void) { - if (!cpu_has_feature(CPU_FTR_ARCH_207S)) + if (!cpu_has_feature(CPU_FTR_SUBCORE)) return 0; /* -- 2.5.0 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 5:07 [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Michael Neuling @ 2016-02-17 5:07 ` Michael Neuling 2016-02-17 6:03 ` Madhavan Srinivasan 2016-02-17 11:09 ` Michael Ellerman 2016-02-17 14:59 ` [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Aneesh Kumar K.V 1 sibling, 2 replies; 10+ messages in thread From: Michael Neuling @ 2016-02-17 5:07 UTC (permalink / raw) To: Michael Ellerman, Benjamin Herrenschmidt Cc: linuxppc-dev, Aneesh Kumar K.V, Michael Neuling Add a cputable entry for POWER9. More code is required to actually boot and run on a POWER9 but this gets the base piece in which we can start building on. Copies over from POWER8 except for: - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture features from (in subsequent patches). - Advertises new user features bits PPC_FEATURE2_ARCH_3_00 & HAS_IEEE128 when on POWER9. - Drops CPU_FTR_SUBCORE. Signed-off-by: Michael Neuling <mikey@neuling.org> --- arch/powerpc/include/asm/cputable.h | 14 ++++++++-- arch/powerpc/include/asm/mmu-hash64.h | 1 + arch/powerpc/include/asm/mmu.h | 1 + arch/powerpc/kernel/cpu_setup_power.S | 48 +++++++++++++++++++++++++++++++++++ arch/powerpc/kernel/cputable.c | 36 ++++++++++++++++++++++++++ arch/powerpc/kernel/mce_power.c | 15 +++++------ 6 files changed, 105 insertions(+), 10 deletions(-) diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h index a47e175..7fb238c 100644 --- a/arch/powerpc/include/asm/cputable.h +++ b/arch/powerpc/include/asm/cputable.h @@ -171,7 +171,7 @@ enum { #define CPU_FTR_ARCH_201 LONG_ASM_CONST(0x0000000200000000) #define CPU_FTR_ARCH_206 LONG_ASM_CONST(0x0000000400000000) #define CPU_FTR_ARCH_207S LONG_ASM_CONST(0x0000000800000000) -/* Free LONG_ASM_CONST(0x0000001000000000) */ +#define CPU_FTR_ARCH_30 LONG_ASM_CONST(0x0000001000000000) #define CPU_FTR_MMCRA LONG_ASM_CONST(0x0000002000000000) #define CPU_FTR_CTRL LONG_ASM_CONST(0x0000004000000000) #define CPU_FTR_SMT LONG_ASM_CONST(0x0000008000000000) @@ -447,6 +447,16 @@ enum { CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) +#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ + CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ + CPU_FTR_MMCRA | CPU_FTR_SMT | \ + CPU_FTR_COHERENT_ICACHE | \ + CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ + CPU_FTR_DSCR | CPU_FTR_SAO | \ + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ + CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ + CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_30) #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ @@ -465,7 +475,7 @@ enum { (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \ - CPU_FTRS_PA6T | CPU_FTR_VSX) + CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9) #endif #else enum { diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h index 7352d3f..e36dc90 100644 --- a/arch/powerpc/include/asm/mmu-hash64.h +++ b/arch/powerpc/include/asm/mmu-hash64.h @@ -114,6 +114,7 @@ #define POWER7_TLB_SETS 128 /* # sets in POWER7 TLB */ #define POWER8_TLB_SETS 512 /* # sets in POWER8 TLB */ +#define POWER9_TLB_SETS_HASH 256 /* # sets in POWER9 TLB Hash mode */ #ifndef __ASSEMBLY__ diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h index 3d5abfe..54d4650 100644 --- a/arch/powerpc/include/asm/mmu.h +++ b/arch/powerpc/include/asm/mmu.h @@ -97,6 +97,7 @@ #define MMU_FTRS_POWER6 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE #define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE #define MMU_FTRS_POWER8 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE +#define MMU_FTRS_POWER9 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE #define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ MMU_FTR_CI_LARGE_PAGE #define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S index 9c9b741..1785480 100644 --- a/arch/powerpc/kernel/cpu_setup_power.S +++ b/arch/powerpc/kernel/cpu_setup_power.S @@ -83,6 +83,43 @@ _GLOBAL(__restore_cpu_power8) mtlr r11 blr +_GLOBAL(__setup_cpu_power9) + mflr r11 + bl __init_FSCR + bl __init_PMU + bl __init_hvmode_206 + mtlr r11 + beqlr + li r0,0 + mtspr SPRN_LPID,r0 + mfspr r3,SPRN_LPCR + ori r3, r3, LPCR_PECEDH + bl __init_LPCR + bl __init_HFSCR + bl __init_tlb_power9 + bl __init_PMU_HV + mtlr r11 + blr + +_GLOBAL(__restore_cpu_power9) + mflr r11 + bl __init_FSCR + bl __init_PMU + mfmsr r3 + rldicl. r0,r3,4,63 + mtlr r11 + beqlr + li r0,0 + mtspr SPRN_LPID,r0 + mfspr r3,SPRN_LPCR + ori r3, r3, LPCR_PECEDH + bl __init_LPCR + bl __init_HFSCR + bl __init_tlb_power9 + bl __init_PMU_HV + mtlr r11 + blr + __init_hvmode_206: /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */ mfmsr r3 @@ -160,6 +197,17 @@ __init_tlb_power8: ptesync 1: blr +__init_tlb_power9: + li r6,256 + mtctr r6 + li r7,0xc00 /* IS field = 0b11 */ + ptesync +2: tlbiel r7 + addi r7,r7,0x1000 + bdnz 2b + ptesync +1: blr + __init_PMU_HV: li r5,0 mtspr SPRN_MMCRC,r5 diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c index 7d80bfd..a4e31fa 100644 --- a/arch/powerpc/kernel/cputable.c +++ b/arch/powerpc/kernel/cputable.c @@ -70,9 +70,12 @@ extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_power7(void); extern void __setup_cpu_power8(unsigned long offset, struct cpu_spec* spec); extern void __restore_cpu_power8(void); +extern void __setup_cpu_power9(unsigned long offset, struct cpu_spec* spec); +extern void __restore_cpu_power9(void); extern void __restore_cpu_a2(void); extern void __flush_tlb_power7(unsigned int action); extern void __flush_tlb_power8(unsigned int action); +extern void __flush_tlb_power9(unsigned int action); extern long __machine_check_early_realmode_p7(struct pt_regs *regs); extern long __machine_check_early_realmode_p8(struct pt_regs *regs); #endif /* CONFIG_PPC64 */ @@ -116,6 +119,19 @@ extern void __restore_cpu_e6500(void); #define COMMON_USER_PA6T (COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\ PPC_FEATURE_TRUE_LE | \ PPC_FEATURE_HAS_ALTIVEC_COMP) +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_06 |\ + PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP | \ + PPC_FEATURE_TRUE_LE | \ + PPC_FEATURE_PSERIES_PERFMON_COMPAT) +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ + PPC_FEATURE2_HTM_COMP | \ + PPC_FEATURE2_HTM_NOSC_COMP | \ + PPC_FEATURE2_DSCR | \ + PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \ + PPC_FEATURE2_VEC_CRYPTO | \ + PPC_FEATURE2_ARCH_3_00 | \ + PPC_FEATURE2_HAS_IEEE128) + #ifdef CONFIG_PPC_BOOK3E_64 #define COMMON_USER_BOOKE (COMMON_USER_PPC64 | PPC_FEATURE_BOOKE) #else @@ -499,6 +515,26 @@ static struct cpu_spec __initdata cpu_specs[] = { .machine_check_early = __machine_check_early_realmode_p8, .platform = "power8", }, + { /* Hacked up Power9 */ + .pvr_mask = 0xffff0000, + .pvr_value = 0x004e0000, + .cpu_name = "POWER9 (raw)", + .cpu_features = CPU_FTRS_POWER9, + .cpu_user_features = COMMON_USER_POWER9, + .cpu_user_features2 = COMMON_USER2_POWER9, + .mmu_features = MMU_FTRS_POWER9, + .icache_bsize = 128, + .dcache_bsize = 128, + .num_pmcs = 6, + .pmc_type = PPC_PMC_IBM, + .oprofile_cpu_type = "ppc64/power8", + .oprofile_type = PPC_OPROFILE_INVALID, + .cpu_setup = __setup_cpu_power9, + .cpu_restore = __restore_cpu_power9, + .flush_tlb = __flush_tlb_power9, + .machine_check_early = __machine_check_early_realmode_p8, + .platform = "power9", + }, { /* Cell Broadband Engine */ .pvr_mask = 0xffff0000, .pvr_value = 0x00700000, diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c index 2c647b1..9131b95 100644 --- a/arch/powerpc/kernel/mce_power.c +++ b/arch/powerpc/kernel/mce_power.c @@ -54,7 +54,7 @@ static void flush_tlb_206(unsigned int num_sets, unsigned int action) } /* - * Generic routine to flush TLB on power7. This routine is used as + * Generic routine to flush TLB on power*. This routine is used as * flush_tlb hook in cpu_spec for Power7 processor. * * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. @@ -65,18 +65,17 @@ void __flush_tlb_power7(unsigned int action) flush_tlb_206(POWER7_TLB_SETS, action); } -/* - * Generic routine to flush TLB on power8. This routine is used as - * flush_tlb hook in cpu_spec for power8 processor. - * - * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. - * TLB_INVAL_SCOPE_LPID: Invalidate TLB for current LPID. - */ void __flush_tlb_power8(unsigned int action) { flush_tlb_206(POWER8_TLB_SETS, action); } +void __flush_tlb_power9(unsigned int action) +{ + flush_tlb_206(POWER9_TLB_SETS_HASH, action); +} + + /* flush SLBs and reload */ static void flush_and_reload_slb(void) { -- 2.5.0 ^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 5:07 ` [PATCH 2/2] powerpc: Add POWER9 cputable entry Michael Neuling @ 2016-02-17 6:03 ` Madhavan Srinivasan 2016-02-17 9:10 ` Michael Neuling 2016-02-17 11:09 ` Michael Ellerman 1 sibling, 1 reply; 10+ messages in thread From: Madhavan Srinivasan @ 2016-02-17 6:03 UTC (permalink / raw) To: linuxppc-dev On Wednesday 17 February 2016 10:37 AM, Michael Neuling wrote: > Add a cputable entry for POWER9. More code is required to actually > boot and run on a POWER9 but this gets the base piece in which we can > start building on. > > Copies over from POWER8 except for: > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture > features from (in subsequent patches). > - Advertises new user features bits PPC_FEATURE2_ARCH_3_00 & > HAS_IEEE128 when on POWER9. > - Drops CPU_FTR_SUBCORE. > > Signed-off-by: Michael Neuling <mikey@neuling.org> > --- > arch/powerpc/include/asm/cputable.h | 14 ++++++++-- > arch/powerpc/include/asm/mmu-hash64.h | 1 + > arch/powerpc/include/asm/mmu.h | 1 + > arch/powerpc/kernel/cpu_setup_power.S | 48 +++++++++++++++++++++++++++++++++++ > arch/powerpc/kernel/cputable.c | 36 ++++++++++++++++++++++++++ > arch/powerpc/kernel/mce_power.c | 15 +++++------ > 6 files changed, 105 insertions(+), 10 deletions(-) > > diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h > index a47e175..7fb238c 100644 > --- a/arch/powerpc/include/asm/cputable.h > +++ b/arch/powerpc/include/asm/cputable.h > @@ -171,7 +171,7 @@ enum { > #define CPU_FTR_ARCH_201 LONG_ASM_CONST(0x0000000200000000) > #define CPU_FTR_ARCH_206 LONG_ASM_CONST(0x0000000400000000) > #define CPU_FTR_ARCH_207S LONG_ASM_CONST(0x0000000800000000) > -/* Free LONG_ASM_CONST(0x0000001000000000) */ > +#define CPU_FTR_ARCH_30 LONG_ASM_CONST(0x0000001000000000) > #define CPU_FTR_MMCRA LONG_ASM_CONST(0x0000002000000000) > #define CPU_FTR_CTRL LONG_ASM_CONST(0x0000004000000000) > #define CPU_FTR_SMT LONG_ASM_CONST(0x0000008000000000) > @@ -447,6 +447,16 @@ enum { > CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) > #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) > #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) > +#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > + CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ > + CPU_FTR_MMCRA | CPU_FTR_SMT | \ > + CPU_FTR_COHERENT_ICACHE | \ > + CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ > + CPU_FTR_DSCR | CPU_FTR_SAO | \ > + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ > + CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ > + CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ > + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_30) > #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ > CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ > @@ -465,7 +475,7 @@ enum { > (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ > CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ > CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \ > - CPU_FTRS_PA6T | CPU_FTR_VSX) > + CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9) > #endif > #else > enum { > diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h > index 7352d3f..e36dc90 100644 > --- a/arch/powerpc/include/asm/mmu-hash64.h > +++ b/arch/powerpc/include/asm/mmu-hash64.h > @@ -114,6 +114,7 @@ > > #define POWER7_TLB_SETS 128 /* # sets in POWER7 TLB */ > #define POWER8_TLB_SETS 512 /* # sets in POWER8 TLB */ > +#define POWER9_TLB_SETS_HASH 256 /* # sets in POWER9 TLB Hash mode */ > > #ifndef __ASSEMBLY__ > > diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h > index 3d5abfe..54d4650 100644 > --- a/arch/powerpc/include/asm/mmu.h > +++ b/arch/powerpc/include/asm/mmu.h > @@ -97,6 +97,7 @@ > #define MMU_FTRS_POWER6 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_POWER8 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > +#define MMU_FTRS_POWER9 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ > MMU_FTR_CI_LARGE_PAGE > #define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ > diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S > index 9c9b741..1785480 100644 > --- a/arch/powerpc/kernel/cpu_setup_power.S > +++ b/arch/powerpc/kernel/cpu_setup_power.S > @@ -83,6 +83,43 @@ _GLOBAL(__restore_cpu_power8) > mtlr r11 > blr > > +_GLOBAL(__setup_cpu_power9) > + mflr r11 > + bl __init_FSCR > + bl __init_PMU Just to keep in mind, I am not sure whether powerisa 3.0 support MMCRS spr, so we will need a feature check in __init_PMU() for power9. > + bl __init_hvmode_206 > + mtlr r11 > + beqlr > + li r0,0 > + mtspr SPRN_LPID,r0 > + mfspr r3,SPRN_LPCR > + ori r3, r3, LPCR_PECEDH > + bl __init_LPCR > + bl __init_HFSCR > + bl __init_tlb_power9 > + bl __init_PMU_HV Again, need to check whether powerisa 3.0 support MMCRH spr which is used in __init_PMU_HV() > + mtlr r11 > + blr > + > +_GLOBAL(__restore_cpu_power9) > + mflr r11 > + bl __init_FSCR > + bl __init_PMU > + mfmsr r3 > + rldicl. r0,r3,4,63 > + mtlr r11 > + beqlr > + li r0,0 > + mtspr SPRN_LPID,r0 > + mfspr r3,SPRN_LPCR > + ori r3, r3, LPCR_PECEDH > + bl __init_LPCR > + bl __init_HFSCR > + bl __init_tlb_power9 > + bl __init_PMU_HV > + mtlr r11 > + blr > + > __init_hvmode_206: > /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */ > mfmsr r3 > @@ -160,6 +197,17 @@ __init_tlb_power8: > ptesync > 1: blr > > +__init_tlb_power9: > + li r6,256 > + mtctr r6 > + li r7,0xc00 /* IS field = 0b11 */ > + ptesync > +2: tlbiel r7 > + addi r7,r7,0x1000 > + bdnz 2b > + ptesync > +1: blr > + > __init_PMU_HV: > li r5,0 > mtspr SPRN_MMCRC,r5 > diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c > index 7d80bfd..a4e31fa 100644 > --- a/arch/powerpc/kernel/cputable.c > +++ b/arch/powerpc/kernel/cputable.c > @@ -70,9 +70,12 @@ extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec); > extern void __restore_cpu_power7(void); > extern void __setup_cpu_power8(unsigned long offset, struct cpu_spec* spec); > extern void __restore_cpu_power8(void); > +extern void __setup_cpu_power9(unsigned long offset, struct cpu_spec* spec); > +extern void __restore_cpu_power9(void); > extern void __restore_cpu_a2(void); > extern void __flush_tlb_power7(unsigned int action); > extern void __flush_tlb_power8(unsigned int action); > +extern void __flush_tlb_power9(unsigned int action); > extern long __machine_check_early_realmode_p7(struct pt_regs *regs); > extern long __machine_check_early_realmode_p8(struct pt_regs *regs); > #endif /* CONFIG_PPC64 */ > @@ -116,6 +119,19 @@ extern void __restore_cpu_e6500(void); > #define COMMON_USER_PA6T (COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\ > PPC_FEATURE_TRUE_LE | \ > PPC_FEATURE_HAS_ALTIVEC_COMP) > +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_06 |\ > + PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP | \ > + PPC_FEATURE_TRUE_LE | \ > + PPC_FEATURE_PSERIES_PERFMON_COMPAT) > +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ > + PPC_FEATURE2_HTM_COMP | \ > + PPC_FEATURE2_HTM_NOSC_COMP | \ > + PPC_FEATURE2_DSCR | \ > + PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \ > + PPC_FEATURE2_VEC_CRYPTO | \ > + PPC_FEATURE2_ARCH_3_00 | \ > + PPC_FEATURE2_HAS_IEEE128) > + > #ifdef CONFIG_PPC_BOOK3E_64 > #define COMMON_USER_BOOKE (COMMON_USER_PPC64 | PPC_FEATURE_BOOKE) > #else > @@ -499,6 +515,26 @@ static struct cpu_spec __initdata cpu_specs[] = { > .machine_check_early = __machine_check_early_realmode_p8, > .platform = "power8", > }, > + { /* Hacked up Power9 */ > + .pvr_mask = 0xffff0000, > + .pvr_value = 0x004e0000, > + .cpu_name = "POWER9 (raw)", > + .cpu_features = CPU_FTRS_POWER9, > + .cpu_user_features = COMMON_USER_POWER9, > + .cpu_user_features2 = COMMON_USER2_POWER9, > + .mmu_features = MMU_FTRS_POWER9, > + .icache_bsize = 128, > + .dcache_bsize = 128, > + .num_pmcs = 6, > + .pmc_type = PPC_PMC_IBM, > + .oprofile_cpu_type = "ppc64/power8", This should be ppc64/power9. We use "oprofile_cpu_type" in PMU init. > + .oprofile_type = PPC_OPROFILE_INVALID, > + .cpu_setup = __setup_cpu_power9, > + .cpu_restore = __restore_cpu_power9, > + .flush_tlb = __flush_tlb_power9, > + .machine_check_early = __machine_check_early_realmode_p8, > + .platform = "power9", > + }, > { /* Cell Broadband Engine */ > .pvr_mask = 0xffff0000, > .pvr_value = 0x00700000, > diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c > index 2c647b1..9131b95 100644 > --- a/arch/powerpc/kernel/mce_power.c > +++ b/arch/powerpc/kernel/mce_power.c > @@ -54,7 +54,7 @@ static void flush_tlb_206(unsigned int num_sets, unsigned int action) > } > > /* > - * Generic routine to flush TLB on power7. This routine is used as > + * Generic routine to flush TLB on power*. This routine is used as > * flush_tlb hook in cpu_spec for Power7 processor. > * > * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > @@ -65,18 +65,17 @@ void __flush_tlb_power7(unsigned int action) > flush_tlb_206(POWER7_TLB_SETS, action); > } > > -/* > - * Generic routine to flush TLB on power8. This routine is used as > - * flush_tlb hook in cpu_spec for power8 processor. > - * > - * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > - * TLB_INVAL_SCOPE_LPID: Invalidate TLB for current LPID. > - */ > void __flush_tlb_power8(unsigned int action) > { > flush_tlb_206(POWER8_TLB_SETS, action); > } > > +void __flush_tlb_power9(unsigned int action) > +{ > + flush_tlb_206(POWER9_TLB_SETS_HASH, action); > +} > + > + > /* flush SLBs and reload */ > static void flush_and_reload_slb(void) > { ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 6:03 ` Madhavan Srinivasan @ 2016-02-17 9:10 ` Michael Neuling 0 siblings, 0 replies; 10+ messages in thread From: Michael Neuling @ 2016-02-17 9:10 UTC (permalink / raw) To: Madhavan Srinivasan, linuxppc-dev > > +_GLOBAL(__setup_cpu_power9) > > + mflr r11 > > + bl __init_FSCR > > + bl __init_PMU > Just to keep in mind, I am not sure whether > powerisa 3.0 support MMCRS spr, so we > will need a feature check in __init_PMU() > for power9. Yeah, I'm not expecting this to work. I'm trying to lay down a common base we can start working on. There are lots of people working a bunch different bases. I want to avoid that and we can do that by upstreaming. > > + bl __init_hvmode_206 > > + mtlr r11 > > + beqlr > > + li r0,0 > > + mtspr SPRN_LPID,r0 > > + mfspr r3,SPRN_LPCR > > + ori r3, r3, LPCR_PECEDH > > + bl __init_LPCR > > + bl __init_HFSCR > > + bl __init_tlb_power9 > > + bl __init_PMU_HV >=20 > Again, need to check whether powerisa 3.0 support MMCRH spr > which is used in __init_PMU_HV() Same here. > > + { /* Hacked up Power9 */ /me reviews his own patch... Oops > > + .pvr_mask =3D 0xffff0000, > > + .pvr_value =3D 0x004e0000, > > + .cpu_name =3D "POWER9 (raw)", > > + .cpu_features =3D CPU_FTRS_POWER9, > > + .cpu_user_features =3D COMMON_USER_POWER9, > > + .cpu_user_features2 =3D COMMON_USER2_POWER9, > > + .mmu_features =3D MMU_FTRS_POWER9, > > + .icache_bsize =3D 128, > > + .dcache_bsize =3D 128, > > + .num_pmcs =3D 6, > > + .pmc_type =3D PPC_PMC_IBM, > > + .oprofile_cpu_type =3D "ppc64/power8", > > This should be ppc64/power9. We use "oprofile_cpu_type" in PMU init. Yep, we can fix that up when we post PMU patches, but if I repost I'll change so it doesn't match with old one. Mikey ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 5:07 ` [PATCH 2/2] powerpc: Add POWER9 cputable entry Michael Neuling 2016-02-17 6:03 ` Madhavan Srinivasan @ 2016-02-17 11:09 ` Michael Ellerman 2016-02-17 12:28 ` oliver 2016-02-18 3:32 ` Michael Neuling 1 sibling, 2 replies; 10+ messages in thread From: Michael Ellerman @ 2016-02-17 11:09 UTC (permalink / raw) To: Michael Neuling, Benjamin Herrenschmidt; +Cc: linuxppc-dev, Aneesh Kumar K.V On Wed, 2016-02-17 at 16:07 +1100, Michael Neuling wrote: > Add a cputable entry for POWER9. More code is required to actually > boot and run on a POWER9 but this gets the base piece in which we can > start building on. > > Copies over from POWER8 except for: > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture ARCH thirty? Would CPU_FTR_ARCH_3 read better? Or CPU_FTR_ARCH_3_00 ? > diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h > index a47e175..7fb238c 100644 > --- a/arch/powerpc/include/asm/cputable.h > +++ b/arch/powerpc/include/asm/cputable.h > @@ -171,7 +171,7 @@ enum { > #define CPU_FTR_ARCH_201 LONG_ASM_CONST(0x0000000200000000) > #define CPU_FTR_ARCH_206 LONG_ASM_CONST(0x0000000400000000) > #define CPU_FTR_ARCH_207S LONG_ASM_CONST(0x0000000800000000) > -/* Free LONG_ASM_CONST(0x0000001000000000) */ > +#define CPU_FTR_ARCH_30 LONG_ASM_CONST(0x0000001000000000) > #define CPU_FTR_MMCRA LONG_ASM_CONST(0x0000002000000000) > #define CPU_FTR_CTRL LONG_ASM_CONST(0x0000004000000000) > #define CPU_FTR_SMT LONG_ASM_CONST(0x0000008000000000) > @@ -447,6 +447,16 @@ enum { > CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) > #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) > #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) > +#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > + CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | CPU_FTR_ARCH_206 |\ > + CPU_FTR_MMCRA | CPU_FTR_SMT | \ > + CPU_FTR_COHERENT_ICACHE | \ > + CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ > + CPU_FTR_DSCR | CPU_FTR_SAO | \ > + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ > + CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ > + CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ > + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_30) > #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ > CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ > @@ -465,7 +475,7 @@ enum { > (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | \ > CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E | \ > CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL | \ > - CPU_FTRS_PA6T | CPU_FTR_VSX) > + CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9) > #endif That's you adding it to CPU_FTRS_POSSIBLE I think. But you forgot to add it to CPU_FTRS_ALWAYS. > diff --git a/arch/powerpc/include/asm/mmu-hash64.h b/arch/powerpc/include/asm/mmu-hash64.h > index 7352d3f..e36dc90 100644 > --- a/arch/powerpc/include/asm/mmu-hash64.h > +++ b/arch/powerpc/include/asm/mmu-hash64.h > @@ -114,6 +114,7 @@ > > #define POWER7_TLB_SETS 128 /* # sets in POWER7 TLB */ > #define POWER8_TLB_SETS 512 /* # sets in POWER8 TLB */ > +#define POWER9_TLB_SETS_HASH 256 /* # sets in POWER9 TLB Hash mode */ > > #ifndef __ASSEMBLY__ > > diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h > index 3d5abfe..54d4650 100644 > --- a/arch/powerpc/include/asm/mmu.h > +++ b/arch/powerpc/include/asm/mmu.h > @@ -97,6 +97,7 @@ > #define MMU_FTRS_POWER6 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_POWER8 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > +#define MMU_FTRS_POWER9 MMU_FTRS_POWER4 | MMU_FTR_LOCKLESS_TLBIE > #define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ > MMU_FTR_CI_LARGE_PAGE > #define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 | \ > diff --git a/arch/powerpc/kernel/cpu_setup_power.S b/arch/powerpc/kernel/cpu_setup_power.S > index 9c9b741..1785480 100644 > --- a/arch/powerpc/kernel/cpu_setup_power.S > +++ b/arch/powerpc/kernel/cpu_setup_power.S > @@ -83,6 +83,43 @@ _GLOBAL(__restore_cpu_power8) > mtlr r11 > blr > > +_GLOBAL(__setup_cpu_power9) > + mflr r11 > + bl __init_FSCR > + bl __init_PMU You might be better off leaving the PMU alone until we have a P9 perf implementation? > + bl __init_hvmode_206 > + mtlr r11 > + beqlr > + li r0,0 > + mtspr SPRN_LPID,r0 > + mfspr r3,SPRN_LPCR > + ori r3, r3, LPCR_PECEDH > + bl __init_LPCR > + bl __init_HFSCR > + bl __init_tlb_power9 > + bl __init_PMU_HV > + mtlr r11 > + blr > + > +_GLOBAL(__restore_cpu_power9) > + mflr r11 > + bl __init_FSCR > + bl __init_PMU > + mfmsr r3 > + rldicl. r0,r3,4,63 > + mtlr r11 > + beqlr > + li r0,0 > + mtspr SPRN_LPID,r0 > + mfspr r3,SPRN_LPCR > + ori r3, r3, LPCR_PECEDH > + bl __init_LPCR > + bl __init_HFSCR > + bl __init_tlb_power9 > + bl __init_PMU_HV > + mtlr r11 > + blr > + > __init_hvmode_206: > /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */ > mfmsr r3 > @@ -160,6 +197,17 @@ __init_tlb_power8: > ptesync > 1: blr > > +__init_tlb_power9: > + li r6,256 POWER9_TLB_SETS_HASH ? > + mtctr r6 > + li r7,0xc00 /* IS field = 0b11 */ > + ptesync > +2: tlbiel r7 > + addi r7,r7,0x1000 > + bdnz 2b > + ptesync > +1: blr > + > __init_PMU_HV: > li r5,0 > mtspr SPRN_MMCRC,r5 > diff --git a/arch/powerpc/kernel/cputable.c b/arch/powerpc/kernel/cputable.c > index 7d80bfd..a4e31fa 100644 > --- a/arch/powerpc/kernel/cputable.c > +++ b/arch/powerpc/kernel/cputable.c > @@ -70,9 +70,12 @@ extern void __setup_cpu_power7(unsigned long offset, struct cpu_spec* spec); > extern void __restore_cpu_power7(void); > extern void __setup_cpu_power8(unsigned long offset, struct cpu_spec* spec); > extern void __restore_cpu_power8(void); > +extern void __setup_cpu_power9(unsigned long offset, struct cpu_spec* spec); > +extern void __restore_cpu_power9(void); > extern void __restore_cpu_a2(void); > extern void __flush_tlb_power7(unsigned int action); > extern void __flush_tlb_power8(unsigned int action); > +extern void __flush_tlb_power9(unsigned int action); > extern long __machine_check_early_realmode_p7(struct pt_regs *regs); > extern long __machine_check_early_realmode_p8(struct pt_regs *regs); > #endif /* CONFIG_PPC64 */ > @@ -116,6 +119,19 @@ extern void __restore_cpu_e6500(void); > #define COMMON_USER_PA6T (COMMON_USER_PPC64 | PPC_FEATURE_PA6T |\ > PPC_FEATURE_TRUE_LE | \ > PPC_FEATURE_HAS_ALTIVEC_COMP) > +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_06 |\ > + PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP | \ > + PPC_FEATURE_TRUE_LE | \ > + PPC_FEATURE_PSERIES_PERFMON_COMPAT) That looks like it's == COMMON_USER_POWER8. > +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ > + PPC_FEATURE2_HTM_COMP | \ > + PPC_FEATURE2_HTM_NOSC_COMP | \ > + PPC_FEATURE2_DSCR | \ > + PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \ > + PPC_FEATURE2_VEC_CRYPTO | \ > + PPC_FEATURE2_ARCH_3_00 | \ > + PPC_FEATURE2_HAS_IEEE128) And this could be COMMON_USER_POWER8 + ARCH_3 + HAS_IEEE128 I think? > @@ -499,6 +515,26 @@ static struct cpu_spec __initdata cpu_specs[] = { > .machine_check_early = __machine_check_early_realmode_p8, > .platform = "power8", > }, > + { /* Hacked up Power9 */ Still hacked up? > + .pvr_mask = 0xffff0000, > + .pvr_value = 0x004e0000, > + .cpu_name = "POWER9 (raw)", > + .cpu_features = CPU_FTRS_POWER9, > + .cpu_user_features = COMMON_USER_POWER9, > + .cpu_user_features2 = COMMON_USER2_POWER9, > + .mmu_features = MMU_FTRS_POWER9, > + .icache_bsize = 128, > + .dcache_bsize = 128, > + .num_pmcs = 6, > + .pmc_type = PPC_PMC_IBM, > + .oprofile_cpu_type = "ppc64/power8", Not true. Probably better to rename it to power9 for now, or leave all the PMU stuff empty. > + .oprofile_type = PPC_OPROFILE_INVALID, > + .cpu_setup = __setup_cpu_power9, > + .cpu_restore = __restore_cpu_power9, > + .flush_tlb = __flush_tlb_power9, > + .machine_check_early = __machine_check_early_realmode_p8, If we think that works we should rename it as a separate patch. > + .platform = "power9", > + }, > { /* Cell Broadband Engine */ > .pvr_mask = 0xffff0000, > .pvr_value = 0x00700000, > diff --git a/arch/powerpc/kernel/mce_power.c b/arch/powerpc/kernel/mce_power.c > index 2c647b1..9131b95 100644 > --- a/arch/powerpc/kernel/mce_power.c > +++ b/arch/powerpc/kernel/mce_power.c > @@ -54,7 +54,7 @@ static void flush_tlb_206(unsigned int num_sets, unsigned int action) > } > > /* > - * Generic routine to flush TLB on power7. This routine is used as > + * Generic routine to flush TLB on power*. This routine is used as That looks bogus. This is still the version for power7 isn't it? > * flush_tlb hook in cpu_spec for Power7 processor. > * > * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > @@ -65,18 +65,17 @@ void __flush_tlb_power7(unsigned int action) > flush_tlb_206(POWER7_TLB_SETS, action); > } > > -/* > - * Generic routine to flush TLB on power8. This routine is used as > - * flush_tlb hook in cpu_spec for power8 processor. > - * > - * action => TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > - * TLB_INVAL_SCOPE_LPID: Invalidate TLB for current LPID. > - */ It's a bit verbose but still correct AFAICS. > void __flush_tlb_power8(unsigned int action) > { > flush_tlb_206(POWER8_TLB_SETS, action); > } > > +void __flush_tlb_power9(unsigned int action) > +{ > + flush_tlb_206(POWER9_TLB_SETS_HASH, action); > +} > + > + > /* flush SLBs and reload */ > static void flush_and_reload_slb(void) > { cheers ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 11:09 ` Michael Ellerman @ 2016-02-17 12:28 ` oliver 2016-02-17 12:49 ` Michael Ellerman 2016-02-18 3:32 ` Michael Neuling 1 sibling, 1 reply; 10+ messages in thread From: oliver @ 2016-02-17 12:28 UTC (permalink / raw) To: Michael Ellerman Cc: Michael Neuling, Benjamin Herrenschmidt, linuxppc-dev, Aneesh Kumar K.V [-- Attachment #1: Type: text/plain, Size: 1802 bytes --] On Wed, Feb 17, 2016 at 10:09 PM, Michael Ellerman <mpe@ellerman.id.au> wrote: > On Wed, 2016-02-17 at 16:07 +1100, Michael Neuling wrote: > > > Add a cputable entry for POWER9. More code is required to actually > > boot and run on a POWER9 but this gets the base piece in which we can > > start building on. > > > > Copies over from POWER8 except for: > > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture > > ARCH thirty? > > Would CPU_FTR_ARCH_3 read better? > > Or CPU_FTR_ARCH_3_00 ? The user visible version flags all have the pattern ARCH_X_XX while the in-kernel flags use ARCH_XXX. It should probably be CPU_FTR_ARCH_300 for consistency with the other kernel flags. > +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_06 > |\ > > + PPC_FEATURE_SMT | > PPC_FEATURE_ICACHE_SNOOP | \ > > + PPC_FEATURE_TRUE_LE | \ > > + PPC_FEATURE_PSERIES_PERFMON_COMPAT) > > That looks like it's == COMMON_USER_POWER8. > > > +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ > > + PPC_FEATURE2_HTM_COMP | \ > > + PPC_FEATURE2_HTM_NOSC_COMP | \ > > + PPC_FEATURE2_DSCR | \ > > + PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \ > > + PPC_FEATURE2_VEC_CRYPTO | \ > > + PPC_FEATURE2_ARCH_3_00 | \ > > + PPC_FEATURE2_HAS_IEEE128) > > And this could be COMMON_USER_POWER8 + ARCH_3 + HAS_IEEE128 I think? It could be, but similarly the POWER8 flags could also be POWER7 + some. I think they're separate so flags can be easily removed if need be, but I'm not sure how useful that is. [-- Attachment #2: Type: text/html, Size: 2680 bytes --] ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 12:28 ` oliver @ 2016-02-17 12:49 ` Michael Ellerman 0 siblings, 0 replies; 10+ messages in thread From: Michael Ellerman @ 2016-02-17 12:49 UTC (permalink / raw) To: oliver Cc: Michael Neuling, Benjamin Herrenschmidt, linuxppc-dev, Aneesh Kumar K.V On Wed, 2016-02-17 at 23:28 +1100, oliver wrote: > On Wed, Feb 17, 2016 at 10:09 PM, Michael Ellerman <mpe@ellerman.id.au> wrote: > > On Wed, 2016-02-17 at 16:07 +1100, Michael Neuling wrote: > > > > > Add a cputable entry for POWER9. More code is required to actually > > > boot and run on a POWER9 but this gets the base piece in which we can > > > start building on. > > > > > > Copies over from POWER8 except for: > > > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture > > > > ARCH thirty? > > > > Would CPU_FTR_ARCH_3 read better? > > > > Or CPU_FTR_ARCH_3_00 ? > The user visible version flags all have the pattern ARCH_X_XX while the > in-kernel flags use ARCH_XXX. It should probably be CPU_FTR_ARCH_300 for > consistency with the other kernel flags. Yeah, 300 is ugly too. I'm not sure if the plan is for the next version to be 3.01 or 4, hopefully the latter. It would be a pity if we had ARCH_300 and then the next version was 4. So I'm inclined to say now is the time where we break from the 2.0x tradition, and just use ARCH_3. > > > +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | PPC_FEATURE_ARCH_2_06 |\ > > > + PPC_FEATURE_SMT | PPC_FEATURE_ICACHE_SNOOP | \ > > > + PPC_FEATURE_TRUE_LE | \ > > > + PPC_FEATURE_PSERIES_PERFMON_COMPAT) > > > > That looks like it's == COMMON_USER_POWER8. > > > > > +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ > > > + PPC_FEATURE2_HTM_COMP | \ > > > + PPC_FEATURE2_HTM_NOSC_COMP | \ > > > + PPC_FEATURE2_DSCR | \ > > > + PPC_FEATURE2_ISEL | PPC_FEATURE2_TAR | \ > > > + PPC_FEATURE2_VEC_CRYPTO | \ > > > + PPC_FEATURE2_ARCH_3_00 | \ > > > + PPC_FEATURE2_HAS_IEEE128) > > > > And this could be COMMON_USER_POWER8 + ARCH_3 + HAS_IEEE128 I think? > It could be, but similarly the POWER8 flags could also be POWER7 + some. You just found yourself another cleanup to do :) > I think they're separate so flags can be easily removed if need be, but I'm not > sure how useful that is. It's not useful. Looking at the history it looks like we have literally *never* removed a bit. cheers ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-17 11:09 ` Michael Ellerman 2016-02-17 12:28 ` oliver @ 2016-02-18 3:32 ` Michael Neuling 2016-02-18 10:37 ` Michael Ellerman 1 sibling, 1 reply; 10+ messages in thread From: Michael Neuling @ 2016-02-18 3:32 UTC (permalink / raw) To: Michael Ellerman, Benjamin Herrenschmidt; +Cc: linuxppc-dev, Aneesh Kumar K.V On Wed, 2016-02-17 at 22:09 +1100, Michael Ellerman wrote: > On Wed, 2016-02-17 at 16:07 +1100, Michael Neuling wrote: >=20 > > Add a cputable entry for POWER9. More code is required to actually > > boot and run on a POWER9 but this gets the base piece in which we > > can > > start building on. > >=20 > > Copies over from POWER8 except for: > > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture >=20 > ARCH thirty? >=20 > Would CPU_FTR_ARCH_3 read better? >=20 > Or CPU_FTR_ARCH_3_00 ? The actual architecture book used to say 2.07 but now says just 3.0. Hence why I picked 30 vs 207. That being said, I don't really care what we call it. >=20 > > diff --git a/arch/powerpc/include/asm/cputable.h > > b/arch/powerpc/include/asm/cputable.h > > index a47e175..7fb238c 100644 > > --- a/arch/powerpc/include/asm/cputable.h > > +++ b/arch/powerpc/include/asm/cputable.h > > @@ -171,7 +171,7 @@ enum { > > #define CPU_FTR_ARCH_201 LONG_ASM_CONST(0x000000020 > > 0000000) > > #define CPU_FTR_ARCH_206 LONG_ASM_CONST(0x000000040 > > 0000000) > > #define CPU_FTR_ARCH_207S LONG_ASM_CONST(0x00000008 > > 00000000) > > -/* Free LONG_ASM_CONST(0x00 > > 00001000000000) */ > > +#define CPU_FTR_ARCH_30 LONG_ASM_CONST(0x00 > > 00001000000000) > > #define CPU_FTR_MMCRA LONG_ASM_CONST(0x0000 > > 002000000000) > > #define CPU_FTR_CTRL LONG_ASM_CONST(0x00000 > > 04000000000) > > #define CPU_FTR_SMT LONG_ASM_CONST(0x000000 > > 8000000000) > > @@ -447,6 +447,16 @@ enum { > > CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) > > #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) > > #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) > > +#define CPU_FTRS_POWER9 (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > > + CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | > > CPU_FTR_ARCH_206 |\ > > + CPU_FTR_MMCRA | CPU_FTR_SMT | \ > > + CPU_FTR_COHERENT_ICACHE | \ > > + CPU_FTR_PURR | CPU_FTR_SPURR | CPU_FTR_REAL_LE | \ > > + CPU_FTR_DSCR | CPU_FTR_SAO | \ > > + CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | > > CPU_FTR_POPCNTD | \ > > + CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | > > CPU_FTR_VMX_COPY | \ > > + CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ > > + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_ARCH_30) > > #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > > CPU_FTR_PPCAS_ARCH_V2 | CPU_FTR_CTRL | \ > > CPU_FTR_ALTIVEC_COMP | CPU_FTR_MMCRA | CPU_FTR_SMT | \ > > @@ -465,7 +475,7 @@ enum { > > (CPU_FTRS_POWER4 | CPU_FTRS_PPC970 | CPU_FTRS_POWER5 | > > \ > > CPU_FTRS_POWER6 | CPU_FTRS_POWER7 | CPU_FTRS_POWER8E > > | \ > > CPU_FTRS_POWER8 | CPU_FTRS_POWER8_DD1 | CPU_FTRS_CELL > > | \ > > - CPU_FTRS_PA6T | CPU_FTR_VSX) > > + CPU_FTRS_PA6T | CPU_FTR_VSX | CPU_FTRS_POWER9) > > #endif >=20 > That's you adding it to CPU_FTRS_POSSIBLE I think. >=20 > But you forgot to add it to CPU_FTRS_ALWAYS. OK, thanks, I'll fix >=20 > > diff --git a/arch/powerpc/include/asm/mmu-hash64.h > > b/arch/powerpc/include/asm/mmu-hash64.h > > index 7352d3f..e36dc90 100644 > > --- a/arch/powerpc/include/asm/mmu-hash64.h > > +++ b/arch/powerpc/include/asm/mmu-hash64.h > > @@ -114,6 +114,7 @@ > > =20 > > #define POWER7_TLB_SETS 128 /* # sets in > > POWER7 TLB */ > > #define POWER8_TLB_SETS 512 /* # sets in > > POWER8 TLB */ > > +#define POWER9_TLB_SETS_HASH 256 /* # sets in POWER9 > > TLB Hash mode */ > > =20 > > #ifndef __ASSEMBLY__ > > =20 > > diff --git a/arch/powerpc/include/asm/mmu.h > > b/arch/powerpc/include/asm/mmu.h > > index 3d5abfe..54d4650 100644 > > --- a/arch/powerpc/include/asm/mmu.h > > +++ b/arch/powerpc/include/asm/mmu.h > > @@ -97,6 +97,7 @@ > > #define MMU_FTRS_POWER6 MMU_FTRS_POWER4 | > > MMU_FTR_LOCKLESS_TLBIE > > #define MMU_FTRS_POWER7 MMU_FTRS_POWER4 | > > MMU_FTR_LOCKLESS_TLBIE > > #define MMU_FTRS_POWER8 MMU_FTRS_POWER4 | > > MMU_FTR_LOCKLESS_TLBIE > > +#define MMU_FTRS_POWER9 MMU_FTRS_POWER4 | > > MMU_FTR_LOCKLESS_TLBIE > > #define MMU_FTRS_CELL MMU_FTRS_DEFAULT_HPTE_ARCH_V2 > > | \ > > MMU_FTR_CI_LARGE_PAGE > > #define MMU_FTRS_PA6T MMU_FTRS_DEFAULT_HPTE_ARCH_V2 > > | \ > > diff --git a/arch/powerpc/kernel/cpu_setup_power.S > > b/arch/powerpc/kernel/cpu_setup_power.S > > index 9c9b741..1785480 100644 > > --- a/arch/powerpc/kernel/cpu_setup_power.S > > +++ b/arch/powerpc/kernel/cpu_setup_power.S > > @@ -83,6 +83,43 @@ _GLOBAL(__restore_cpu_power8) > > mtlr r11 > > blr > > =20 > > +_GLOBAL(__setup_cpu_power9) > > + mflr r11 > > + bl __init_FSCR > > + bl __init_PMU >=20 > You might be better off leaving the PMU alone until we have a P9 > perf implementation? ok, I'll drop this bit. >=20 > > + bl __init_hvmode_206 > > + mtlr r11 > > + beqlr > > + li r0,0 > > + mtspr SPRN_LPID,r0 > > + mfspr r3,SPRN_LPCR > > + ori r3, r3, LPCR_PECEDH > > + bl __init_LPCR > > + bl __init_HFSCR > > + bl __init_tlb_power9 > > + bl __init_PMU_HV > > + mtlr r11 > > + blr > > + > > +_GLOBAL(__restore_cpu_power9) > > + mflr r11 > > + bl __init_FSCR > > + bl __init_PMU > > + mfmsr r3 > > + rldicl. r0,r3,4,63 > > + mtlr r11 > > + beqlr > > + li r0,0 > > + mtspr SPRN_LPID,r0 > > + mfspr r3,SPRN_LPCR > > + ori r3, r3, LPCR_PECEDH > > + bl __init_LPCR > > + bl __init_HFSCR > > + bl __init_tlb_power9 > > + bl __init_PMU_HV > > + mtlr r11 > > + blr > > + > > __init_hvmode_206: > > /* Disable CPU_FTR_HVMODE and exit if MSR:HV is not set */ > > mfmsr r3 > > @@ -160,6 +197,17 @@ __init_tlb_power8: > > ptesync > > 1: blr > > =20 > > +__init_tlb_power9: > > + li r6,256 >=20 > POWER9_TLB_SETS_HASH ? yep and we need to do that for others here too. >=20 > > + mtctr r6 > > + li r7,0xc00 /* IS field =3D 0b11 */ > > + ptesync > > +2: tlbiel r7 > > + addi r7,r7,0x1000 > > + bdnz 2b > > + ptesync > > +1: blr > > + > > __init_PMU_HV: > > li r5,0 > > mtspr SPRN_MMCRC,r5 > > diff --git a/arch/powerpc/kernel/cputable.c > > b/arch/powerpc/kernel/cputable.c > > index 7d80bfd..a4e31fa 100644 > > --- a/arch/powerpc/kernel/cputable.c > > +++ b/arch/powerpc/kernel/cputable.c > > @@ -70,9 +70,12 @@ extern void __setup_cpu_power7(unsigned long > > offset, struct cpu_spec* spec); > > extern void __restore_cpu_power7(void); > > extern void __setup_cpu_power8(unsigned long offset, struct > > cpu_spec* spec); > > extern void __restore_cpu_power8(void); > > +extern void __setup_cpu_power9(unsigned long offset, struct > > cpu_spec* spec); > > +extern void __restore_cpu_power9(void); > > extern void __restore_cpu_a2(void); > > extern void __flush_tlb_power7(unsigned int action); > > extern void __flush_tlb_power8(unsigned int action); > > +extern void __flush_tlb_power9(unsigned int action); > > extern long __machine_check_early_realmode_p7(struct pt_regs > > *regs); > > extern long __machine_check_early_realmode_p8(struct pt_regs > > *regs); > > #endif /* CONFIG_PPC64 */ > > @@ -116,6 +119,19 @@ extern void __restore_cpu_e6500(void); > > #define COMMON_USER_PA6T (COMMON_USER_PPC64 | > > PPC_FEATURE_PA6T |\ > > PPC_FEATURE_TRUE_LE | \ > > PPC_FEATURE_HAS_ALTIVEC_COMP) > > +#define COMMON_USER_POWER9 (COMMON_USER_PPC64 | > > PPC_FEATURE_ARCH_2_06 |\ > > + PPC_FEATURE_SMT | > > PPC_FEATURE_ICACHE_SNOOP | \ > > + PPC_FEATURE_TRUE_LE | \ > > + PPC_FEATURE_PSERIES_PERFMON_COMPA > > T) >=20 > That looks like it's =3D=3D COMMON_USER_POWER8. Ok, I'll change >=20 > > +#define COMMON_USER2_POWER9 (PPC_FEATURE2_ARCH_2_07 | \ > > + PPC_FEATURE2_HTM_COMP | \ > > + PPC_FEATURE2_HTM_NOSC_COMP | \ > > + PPC_FEATURE2_DSCR | \ > > + PPC_FEATURE2_ISEL | > > PPC_FEATURE2_TAR | \ > > + PPC_FEATURE2_VEC_CRYPTO | \ > > + PPC_FEATURE2_ARCH_3_00 | \ > > + PPC_FEATURE2_HAS_IEEE128) >=20 > And this could be COMMON_USER_POWER8 + ARCH_3 + HAS_IEEE128 I think? OK, I'll change >=20 > > @@ -499,6 +515,26 @@ static struct cpu_spec __initdata cpu_specs[] > > =3D { > > .machine_check_early =3D > > __machine_check_early_realmode_p8, > > .platform =3D "power8", > > }, > > + { /* Hacked up Power9 */ >=20 > Still hacked up? That was a screwup on my part.. I'll remove it. >=20 > > + .pvr_mask =3D 0xffff0000, > > + .pvr_value =3D 0x004e0000, > > + .cpu_name =3D "POWER9 (raw)", > > + .cpu_features =3D CPU_FTRS_POWER9, > > + .cpu_user_features =3D COMMON_USER_POWER9, > > + .cpu_user_features2 =3D COMMON_USER2_POWER9, > > + .mmu_features =3D MMU_FTRS_POWER9, > > + .icache_bsize =3D 128, > > + .dcache_bsize =3D 128, > > + .num_pmcs =3D 6, > > + .pmc_type =3D PPC_PMC_IBM, > > + .oprofile_cpu_type =3D "ppc64/power8", >=20 > Not true. Probably better to rename it to power9 for now, or leave > all the PMU > stuff empty. Ok >=20 > > + .oprofile_type =3D > > PPC_OPROFILE_INVALID, > > + .cpu_setup =3D __setup_cpu_power9, > > + .cpu_restore =3D > > __restore_cpu_power9, > > + .flush_tlb =3D __flush_tlb_power9, > > + .machine_check_early =3D > > __machine_check_early_realmode_p8, >=20 > If we think that works we should rename it as a separate patch. ok >=20 > > + .platform =3D "power9", > > + }, > > { /* Cell Broadband Engine */ > > .pvr_mask =3D 0xffff0000, > > .pvr_value =3D 0x00700000, > > diff --git a/arch/powerpc/kernel/mce_power.c > > b/arch/powerpc/kernel/mce_power.c > > index 2c647b1..9131b95 100644 > > --- a/arch/powerpc/kernel/mce_power.c > > +++ b/arch/powerpc/kernel/mce_power.c > > @@ -54,7 +54,7 @@ static void flush_tlb_206(unsigned int num_sets, > > unsigned int action) > > } > > =20 > > /* > > - * Generic routine to flush TLB on power7. This routine is used as > > + * Generic routine to flush TLB on power*. This routine is used as >=20 > That looks bogus. This is still the version for power7 isn't it? The comment is repeated for power7 and power8. I thought it was pointless to add another identical comment on the power9 version, so I was trying to consolidate them. =20 I probably need to reword it a bit more though. >=20 > > * flush_tlb hook in cpu_spec for Power7 processor. > > * > > * action =3D> TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > > @@ -65,18 +65,17 @@ void __flush_tlb_power7(unsigned int action) > > flush_tlb_206(POWER7_TLB_SETS, action); > > } > > =20 > > -/* > > - * Generic routine to flush TLB on power8. This routine is used as > > - * flush_tlb hook in cpu_spec for power8 processor. > > - * > > - * action =3D> TLB_INVAL_SCOPE_GLOBAL: Invalidate all TLBs. > > - * TLB_INVAL_SCOPE_LPID: Invalidate TLB for current > > LPID. > > - */ >=20 > It's a bit verbose but still correct AFAICS. See above. >=20 > > void __flush_tlb_power8(unsigned int action) > > { > > flush_tlb_206(POWER8_TLB_SETS, action); > > } > > =20 > > +void __flush_tlb_power9(unsigned int action) > > +{ > > + flush_tlb_206(POWER9_TLB_SETS_HASH, action); > > +} > > + > > + > > /* flush SLBs and reload */ > > static void flush_and_reload_slb(void) > > { >=20 > cheers >=20 ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 2/2] powerpc: Add POWER9 cputable entry 2016-02-18 3:32 ` Michael Neuling @ 2016-02-18 10:37 ` Michael Ellerman 0 siblings, 0 replies; 10+ messages in thread From: Michael Ellerman @ 2016-02-18 10:37 UTC (permalink / raw) To: Michael Neuling, Benjamin Herrenschmidt; +Cc: linuxppc-dev, Aneesh Kumar K.V On Thu, 2016-02-18 at 14:32 +1100, Michael Neuling wrote: > On Wed, 2016-02-17 at 22:09 +1100, Michael Ellerman wrote: > > On Wed, 2016-02-17 at 16:07 +1100, Michael Neuling wrote: > > > > > Add a cputable entry for POWER9. More code is required to actually > > > boot and run on a POWER9 but this gets the base piece in which we > > > can > > > start building on. > > > > > > Copies over from POWER8 except for: > > > - Adds a new CPU_FTR_ARCH_30 bit to start hanging new architecture > > > > ARCH thirty? > > > > Would CPU_FTR_ARCH_3 read better? > > > > Or CPU_FTR_ARCH_3_00 ? > > The actual architecture book used to say 2.07 but now says just 3.0. > Hence why I picked 30 vs 207. Yeah I get the logic. > That being said, I don't really care what we call it. I like CPU_FTR_ARCH_3. cheers ^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit 2016-02-17 5:07 [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Michael Neuling 2016-02-17 5:07 ` [PATCH 2/2] powerpc: Add POWER9 cputable entry Michael Neuling @ 2016-02-17 14:59 ` Aneesh Kumar K.V 1 sibling, 0 replies; 10+ messages in thread From: Aneesh Kumar K.V @ 2016-02-17 14:59 UTC (permalink / raw) To: Michael Neuling, Michael Ellerman, Benjamin Herrenschmidt Cc: linuxppc-dev, Michael Neuling Michael Neuling <mikey@neuling.org> writes: > Subcores isn't really part of the 2.07 architecture but currently we > turn it on using the 2.07 feature bit. Subcores is really a POWER8 > specific feature. > > This adds a new CPU_FTR bit just for subcores and moves the subcore > init code over to use this. > Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> > Signed-off-by: Michael Neuling <mikey@neuling.org> > --- > arch/powerpc/include/asm/cputable.h | 3 ++- > arch/powerpc/platforms/powernv/subcore.c | 2 +- > 2 files changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/powerpc/include/asm/cputable.h b/arch/powerpc/include/asm/cputable.h > index b118072..a47e175 100644 > --- a/arch/powerpc/include/asm/cputable.h > +++ b/arch/powerpc/include/asm/cputable.h > @@ -196,6 +196,7 @@ enum { > #define CPU_FTR_DAWR LONG_ASM_CONST(0x0400000000000000) > #define CPU_FTR_DABRX LONG_ASM_CONST(0x0800000000000000) > #define CPU_FTR_PMAO_BUG LONG_ASM_CONST(0x1000000000000000) > +#define CPU_FTR_SUBCORE LONG_ASM_CONST(0x2000000000000000) > > #ifndef __ASSEMBLY__ > > @@ -443,7 +444,7 @@ enum { > CPU_FTR_STCX_CHECKS_ADDRESS | CPU_FTR_POPCNTB | CPU_FTR_POPCNTD | \ > CPU_FTR_ICSWX | CPU_FTR_CFAR | CPU_FTR_HVMODE | CPU_FTR_VMX_COPY | \ > CPU_FTR_DBELL | CPU_FTR_HAS_PPR | CPU_FTR_DAWR | \ > - CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP) > + CPU_FTR_ARCH_207S | CPU_FTR_TM_COMP | CPU_FTR_SUBCORE) > #define CPU_FTRS_POWER8E (CPU_FTRS_POWER8 | CPU_FTR_PMAO_BUG) > #define CPU_FTRS_POWER8_DD1 (CPU_FTRS_POWER8 & ~CPU_FTR_DBELL) > #define CPU_FTRS_CELL (CPU_FTR_USE_TB | CPU_FTR_LWSYNC | \ > diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c > index 503a73f..0babef1 100644 > --- a/arch/powerpc/platforms/powernv/subcore.c > +++ b/arch/powerpc/platforms/powernv/subcore.c > @@ -407,7 +407,7 @@ static DEVICE_ATTR(subcores_per_core, 0644, > > static int subcore_init(void) > { > - if (!cpu_has_feature(CPU_FTR_ARCH_207S)) > + if (!cpu_has_feature(CPU_FTR_SUBCORE)) > return 0; > > /* > -- > 2.5.0 ^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2016-02-18 10:37 UTC | newest] Thread overview: 10+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-02-17 5:07 [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Michael Neuling 2016-02-17 5:07 ` [PATCH 2/2] powerpc: Add POWER9 cputable entry Michael Neuling 2016-02-17 6:03 ` Madhavan Srinivasan 2016-02-17 9:10 ` Michael Neuling 2016-02-17 11:09 ` Michael Ellerman 2016-02-17 12:28 ` oliver 2016-02-17 12:49 ` Michael Ellerman 2016-02-18 3:32 ` Michael Neuling 2016-02-18 10:37 ` Michael Ellerman 2016-02-17 14:59 ` [PATCH 1/2] powerpc/powernv: Create separate subcores CPU feature bit Aneesh Kumar K.V
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