Add support for TLBnPS registers available in MMU Architecture Version (MAV) 2.0.
Signed-off-by: Mihai Caraman <mihai.cara...@freescale.com> --- v2: - Add vcpu generic function has_feature() Documentation/virtual/kvm/api.txt | 4 ++++ arch/powerpc/include/asm/kvm_host.h | 1 + arch/powerpc/include/uapi/asm/kvm.h | 4 ++++ arch/powerpc/kvm/e500.h | 16 ++++++++++++++++ arch/powerpc/kvm/e500_emulate.c | 10 ++++++++++ arch/powerpc/kvm/e500_mmu.c | 20 ++++++++++++++++++++ 6 files changed, 55 insertions(+), 0 deletions(-) diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 1a76663..f045377 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -1803,6 +1803,10 @@ registers, find a list below: PPC | KVM_REG_PPC_TLB1CFG | 32 PPC | KVM_REG_PPC_TLB2CFG | 32 PPC | KVM_REG_PPC_TLB3CFG | 32 + PPC | KVM_REG_PPC_TLB0PS | 32 + PPC | KVM_REG_PPC_TLB1PS | 32 + PPC | KVM_REG_PPC_TLB2PS | 32 + PPC | KVM_REG_PPC_TLB3PS | 32 ARM registers are mapped using the lower 32 bits. The upper 16 of that is the register group type, or coprocessor number: diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index e34f8fe..3b6cee3 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -502,6 +502,7 @@ struct kvm_vcpu_arch { spinlock_t wdt_lock; struct timer_list wdt_timer; u32 tlbcfg[4]; + u32 tlbps[4]; u32 mmucfg; u32 epr; u32 crit_save; diff --git a/arch/powerpc/include/uapi/asm/kvm.h b/arch/powerpc/include/uapi/asm/kvm.h index 777dc81..7cfd13f 100644 --- a/arch/powerpc/include/uapi/asm/kvm.h +++ b/arch/powerpc/include/uapi/asm/kvm.h @@ -439,4 +439,8 @@ struct kvm_get_htab_header { #define KVM_REG_PPC_TLB1CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x93) #define KVM_REG_PPC_TLB2CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x94) #define KVM_REG_PPC_TLB3CFG (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x95) +#define KVM_REG_PPC_TLB0PS (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x96) +#define KVM_REG_PPC_TLB1PS (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x97) +#define KVM_REG_PPC_TLB2PS (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x98) +#define KVM_REG_PPC_TLB3PS (KVM_REG_PPC | KVM_REG_SIZE_U32 | 0x99) #endif /* __LINUX_KVM_POWERPC_H */ diff --git a/arch/powerpc/kvm/e500.h b/arch/powerpc/kvm/e500.h index b73ca7a..795934d 100644 --- a/arch/powerpc/kvm/e500.h +++ b/arch/powerpc/kvm/e500.h @@ -23,6 +23,8 @@ #include <asm/mmu-book3e.h> #include <asm/tlb.h> +#define VCPU_FTR_MMU_V2 0 + #define E500_PID_NUM 3 #define E500_TLB_NUM 2 @@ -299,4 +301,18 @@ static inline unsigned int get_tlbmiss_tid(struct kvm_vcpu *vcpu) #define get_tlb_sts(gtlbe) (MAS1_TS) #endif /* !BOOKE_HV */ +static inline bool has_feature(const struct kvm_vcpu *vcpu, + unsigned long vcpu_ftr) +{ + bool has_ftr; + switch (vcpu_ftr) { + case VCPU_FTR_MMU_V2: + has_ftr = ((vcpu->arch.mmucfg & MMUCFG_MAVN) == MMUCFG_MAVN_V2); + break; + default: + has_ftr = false; + } + return has_ftr; +} + #endif /* KVM_E500_H */ diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index e78f353..12b8de2 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -284,6 +284,16 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val) case SPRN_TLB1CFG: *spr_val = vcpu->arch.tlbcfg[1]; break; + case SPRN_TLB0PS: + if (!has_feature(vcpu, VCPU_FTR_MMU_V2)) + return EMULATE_FAIL; + *spr_val = vcpu->arch.tlbps[0]; + break; + case SPRN_TLB1PS: + if (!has_feature(vcpu, VCPU_FTR_MMU_V2)) + return EMULATE_FAIL; + *spr_val = vcpu->arch.tlbps[1]; + break; case SPRN_L1CSR0: *spr_val = vcpu_e500->l1csr0; break; diff --git a/arch/powerpc/kvm/e500_mmu.c b/arch/powerpc/kvm/e500_mmu.c index 7d6bb12..e354fa1 100644 --- a/arch/powerpc/kvm/e500_mmu.c +++ b/arch/powerpc/kvm/e500_mmu.c @@ -623,6 +623,12 @@ int kvmppc_get_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, case KVM_REG_PPC_TLB3CFG: i = id - KVM_REG_PPC_TLB0CFG; *val = get_reg_val(id, vcpu->arch.tlbcfg[i]); + case KVM_REG_PPC_TLB0PS: + case KVM_REG_PPC_TLB1PS: + case KVM_REG_PPC_TLB2PS: + case KVM_REG_PPC_TLB3PS: + i = id - KVM_REG_PPC_TLB0PS; + *val = get_reg_val(id, vcpu->arch.tlbps[i]); default: r = -EINVAL; break; @@ -672,6 +678,15 @@ int kvmppc_set_one_reg_e500_tlb(struct kvm_vcpu *vcpu, u64 id, r = -EINVAL; break; } + case KVM_REG_PPC_TLB0PS: + case KVM_REG_PPC_TLB1PS: + case KVM_REG_PPC_TLB2PS: + case KVM_REG_PPC_TLB3PS: { + i = id - KVM_REG_PPC_TLB0PS; + if (set_reg_val(id, *val) != vcpu->arch.tlbps[i]) + r = -EINVAL; + break; + } default: r = -EINVAL; break; @@ -845,6 +860,11 @@ static int vcpu_mmu_init(struct kvm_vcpu *vcpu, vcpu->arch.tlbcfg[1] |= params[1].entries; vcpu->arch.tlbcfg[1] |= params[1].ways << TLBnCFG_ASSOC_SHIFT; + if (has_feature(vcpu, VCPU_FTR_MMU_V2)) { + vcpu->arch.tlbps[0] = mfspr(SPRN_TLB0PS); + vcpu->arch.tlbps[1] = mfspr(SPRN_TLB1PS); + } + return 0; } -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html