diff options
Diffstat (limited to 'arch/powerpc/kvm/book3s_xics.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_xics.c | 64 |
1 files changed, 51 insertions, 13 deletions
diff --git a/arch/powerpc/kvm/book3s_xics.c b/arch/powerpc/kvm/book3s_xics.c index 1417e65..7fd247c 100644 --- a/arch/powerpc/kvm/book3s_xics.c +++ b/arch/powerpc/kvm/book3s_xics.c @@ -30,6 +30,9 @@ #define XICS_DBG(fmt...) trace_printk(fmt) #endif +#define ENABLE_REALMODE true +#define DEBUG_REALMODE false + /* * LOCKING * ======= @@ -220,8 +223,10 @@ static inline bool icp_try_update(struct kvmppc_icp *icp, * in Accept (H_XIRR) and Up_Cppr (H_XPPR). * * We also do not try to figure out whether the EE state has changed, - * we unconditionally set it if the new state calls for it for the - * same reason. + * we unconditionally set it if the new state calls for it. The reason + * for that is that we opportunistically remove the pending interrupt + * flag when raising CPPR, so we need to set it back here if an + * interrupt is still pending. */ if (new.out_ee) { kvmppc_book3s_queue_irqprio(icp->vcpu, @@ -483,7 +488,7 @@ static void icp_down_cppr(struct kvmppc_xics *xics, struct kvmppc_icp *icp, icp_check_resend(xics, icp); } -static noinline unsigned long h_xirr(struct kvm_vcpu *vcpu) +static noinline unsigned long kvmppc_h_xirr(struct kvm_vcpu *vcpu) { union kvmppc_icp_state old_state, new_state; struct kvmppc_icp *icp = vcpu->arch.icp; @@ -517,8 +522,8 @@ static noinline unsigned long h_xirr(struct kvm_vcpu *vcpu) return xirr; } -static noinline int h_ipi(struct kvm_vcpu *vcpu, unsigned long server, - unsigned long mfrr) +static noinline int kvmppc_h_ipi(struct kvm_vcpu *vcpu, unsigned long server, + unsigned long mfrr) { union kvmppc_icp_state old_state, new_state; struct kvmppc_xics *xics = vcpu->kvm->arch.xics; @@ -586,7 +591,7 @@ static noinline int h_ipi(struct kvm_vcpu *vcpu, unsigned long server, return H_SUCCESS; } -static noinline void h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr) +static noinline void kvmppc_h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr) { union kvmppc_icp_state old_state, new_state; struct kvmppc_xics *xics = vcpu->kvm->arch.xics; @@ -643,7 +648,7 @@ static noinline void h_cppr(struct kvm_vcpu *vcpu, unsigned long cppr) icp_deliver_irq(xics, icp, reject); } -static noinline int h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr) +static noinline int kvmppc_h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr) { struct kvmppc_xics *xics = vcpu->kvm->arch.xics; struct kvmppc_icp *icp = vcpu->arch.icp; @@ -693,29 +698,54 @@ static noinline int h_eoi(struct kvm_vcpu *vcpu, unsigned long xirr) return H_SUCCESS; } +static noinline int kvmppc_xics_rm_complete(struct kvm_vcpu *vcpu, u32 hcall) +{ + struct kvmppc_xics *xics = vcpu->kvm->arch.xics; + struct kvmppc_icp *icp = vcpu->arch.icp; + + XICS_DBG("XICS_RM: H_%x completing, act: %x state: %lx tgt: %p\n", + hcall, icp->rm_action, icp->rm_dbgstate.raw, icp->rm_dbgtgt); + + if (icp->rm_action & XICS_RM_KICK_VCPU) + kvmppc_fast_vcpu_kick(icp->rm_kick_target); + if (icp->rm_action & XICS_RM_CHECK_RESEND) + icp_check_resend(xics, icp); + if (icp->rm_action & XICS_RM_REJECT) + icp_deliver_irq(xics, icp, icp->rm_reject); + + icp->rm_action = 0; + + return H_SUCCESS; +} + int kvmppc_xics_hcall(struct kvm_vcpu *vcpu, u32 req) { + struct kvmppc_xics *xics = vcpu->kvm->arch.xics; unsigned long res; int rc = H_SUCCESS; /* Check if we have an ICP */ - if (!vcpu->arch.icp || !vcpu->kvm->arch.xics) + if (!xics || !vcpu->arch.icp) return H_HARDWARE; + /* Check for real mode returning too hard */ + if (xics->real_mode) + return kvmppc_xics_rm_complete(vcpu, req); + switch (req) { case H_XIRR: - res = h_xirr(vcpu); + res = kvmppc_h_xirr(vcpu); kvmppc_set_gpr(vcpu, 4, res); break; case H_CPPR: - h_cppr(vcpu, kvmppc_get_gpr(vcpu, 4)); + kvmppc_h_cppr(vcpu, kvmppc_get_gpr(vcpu, 4)); break; case H_EOI: - rc = h_eoi(vcpu, kvmppc_get_gpr(vcpu, 4)); + rc = kvmppc_h_eoi(vcpu, kvmppc_get_gpr(vcpu, 4)); break; case H_IPI: - rc = h_ipi(vcpu, kvmppc_get_gpr(vcpu, 4), - kvmppc_get_gpr(vcpu, 5)); + rc = kvmppc_h_ipi(vcpu, kvmppc_get_gpr(vcpu, 4), + kvmppc_get_gpr(vcpu, 5)); break; } @@ -933,6 +963,14 @@ int kvm_xics_create(struct kvm *kvm, u32 type) xics_debugfs_init(xics); +#ifdef CONFIG_KVM_BOOK3S_64_HV + if (cpu_has_feature(CPU_FTR_ARCH_206)) { + /* Enable real mode support */ + xics->real_mode = ENABLE_REALMODE; + xics->real_mode_dbg = DEBUG_REALMODE; + } +#endif /* CONFIG_KVM_BOOK3S_64_HV */ + return 0; } |