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author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2013-10-07 18:48:01 +0200 |
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committer | Alexander Graf <agraf@suse.de> | 2013-10-17 18:42:36 +0200 |
commit | cbbc58d4fdfab1a39a6ac1b41fcb17885952157a (patch) | |
tree | 66315f4516c953a9c1f0699d985541d84fcb7df3 /arch/powerpc/kvm/book3s.c | |
parent | kvm: Add struct kvm arg to memslot APIs (diff) | |
download | linux-cbbc58d4fdfab1a39a6ac1b41fcb17885952157a.tar.xz linux-cbbc58d4fdfab1a39a6ac1b41fcb17885952157a.zip |
kvm: powerpc: book3s: Allow the HV and PR selection per virtual machine
This moves the kvmppc_ops callbacks to be a per VM entity. This
enables us to select HV and PR mode when creating a VM. We also
allow both kvm-hv and kvm-pr kernel module to be loaded. To
achieve this we move /dev/kvm ownership to kvm.ko module. Depending on
which KVM mode we select during VM creation we take a reference
count on respective module
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[agraf: fix coding style]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/book3s.c')
-rw-r--r-- | arch/powerpc/kvm/book3s.c | 89 |
1 files changed, 60 insertions, 29 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 130fe1d75bac..ad8f6ed3f136 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -34,6 +34,7 @@ #include <linux/vmalloc.h> #include <linux/highmem.h> +#include "book3s.h" #include "trace.h" #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU @@ -71,7 +72,7 @@ void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu) static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) { - if (!kvmppc_ops->is_hv_enabled) + if (!vcpu->kvm->arch.kvm_ops->is_hv_enabled) return to_book3s(vcpu)->hior; return 0; } @@ -79,7 +80,7 @@ static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, unsigned long pending_now, unsigned long old_pending) { - if (kvmppc_ops->is_hv_enabled) + if (vcpu->kvm->arch.kvm_ops->is_hv_enabled) return; if (pending_now) vcpu->arch.shared->int_pending = 1; @@ -93,7 +94,7 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) ulong crit_r1; bool crit; - if (kvmppc_ops->is_hv_enabled) + if (vcpu->kvm->arch.kvm_ops->is_hv_enabled) return false; crit_raw = vcpu->arch.shared->critical; @@ -477,13 +478,13 @@ void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { - return kvmppc_ops->get_sregs(vcpu, sregs); + return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); } int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs) { - return kvmppc_ops->set_sregs(vcpu, sregs); + return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); } int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) @@ -562,7 +563,7 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) if (size > sizeof(val)) return -EINVAL; - r = kvmppc_ops->get_one_reg(vcpu, reg->id, &val); + r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, reg->id, &val); if (r == -EINVAL) { r = 0; switch (reg->id) { @@ -641,7 +642,7 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size)) return -EFAULT; - r = kvmppc_ops->set_one_reg(vcpu, reg->id, &val); + r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, reg->id, &val); if (r == -EINVAL) { r = 0; switch (reg->id) { @@ -702,23 +703,23 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { - kvmppc_ops->vcpu_load(vcpu, cpu); + vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); } void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) { - kvmppc_ops->vcpu_put(vcpu); + vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); } void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) { - kvmppc_ops->set_msr(vcpu, msr); + vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); } EXPORT_SYMBOL_GPL(kvmppc_set_msr); int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) { - return kvmppc_ops->vcpu_run(kvm_run, vcpu); + return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); } int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, @@ -743,84 +744,84 @@ void kvmppc_decrementer_func(unsigned long data) struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) { - return kvmppc_ops->vcpu_create(kvm, id); + return kvm->arch.kvm_ops->vcpu_create(kvm, id); } void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) { - kvmppc_ops->vcpu_free(vcpu); + vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); } int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) { - return kvmppc_ops->check_requests(vcpu); + return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); } int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) { - return kvmppc_ops->get_dirty_log(kvm, log); + return kvm->arch.kvm_ops->get_dirty_log(kvm, log); } void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, struct kvm_memory_slot *dont) { - kvmppc_ops->free_memslot(free, dont); + kvm->arch.kvm_ops->free_memslot(free, dont); } int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, unsigned long npages) { - return kvmppc_ops->create_memslot(slot, npages); + return kvm->arch.kvm_ops->create_memslot(slot, npages); } void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) { - kvmppc_ops->flush_memslot(kvm, memslot); + kvm->arch.kvm_ops->flush_memslot(kvm, memslot); } int kvmppc_core_prepare_memory_region(struct kvm *kvm, struct kvm_memory_slot *memslot, struct kvm_userspace_memory_region *mem) { - return kvmppc_ops->prepare_memory_region(kvm, memslot, mem); + return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); } void kvmppc_core_commit_memory_region(struct kvm *kvm, struct kvm_userspace_memory_region *mem, const struct kvm_memory_slot *old) { - kvmppc_ops->commit_memory_region(kvm, mem, old); + kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old); } int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) { - return kvmppc_ops->unmap_hva(kvm, hva); + return kvm->arch.kvm_ops->unmap_hva(kvm, hva); } EXPORT_SYMBOL_GPL(kvm_unmap_hva); int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) { - return kvmppc_ops->unmap_hva_range(kvm, start, end); + return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); } int kvm_age_hva(struct kvm *kvm, unsigned long hva) { - return kvmppc_ops->age_hva(kvm, hva); + return kvm->arch.kvm_ops->age_hva(kvm, hva); } int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) { - return kvmppc_ops->test_age_hva(kvm, hva); + return kvm->arch.kvm_ops->test_age_hva(kvm, hva); } void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) { - kvmppc_ops->set_spte_hva(kvm, hva, pte); + kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); } void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) { - kvmppc_ops->mmu_destroy(vcpu); + vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); } int kvmppc_core_init_vm(struct kvm *kvm) @@ -831,12 +832,12 @@ int kvmppc_core_init_vm(struct kvm *kvm) INIT_LIST_HEAD(&kvm->arch.rtas_tokens); #endif - return kvmppc_ops->init_vm(kvm); + return kvm->arch.kvm_ops->init_vm(kvm); } void kvmppc_core_destroy_vm(struct kvm *kvm) { - kvmppc_ops->destroy_vm(kvm); + kvm->arch.kvm_ops->destroy_vm(kvm); #ifdef CONFIG_PPC64 kvmppc_rtas_tokens_free(kvm); @@ -846,5 +847,35 @@ void kvmppc_core_destroy_vm(struct kvm *kvm) int kvmppc_core_check_processor_compat(void) { - return kvmppc_ops->check_processor_compat(); + /* + * We always return 0 for book3s. We check + * for compatability while loading the HV + * or PR module + */ + return 0; +} + +static int kvmppc_book3s_init(void) +{ + int r; + + r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); + if (r) + return r; +#ifdef CONFIG_KVM_BOOK3S_32 + r = kvmppc_book3s_init_pr(); +#endif + return r; + +} + +static void kvmppc_book3s_exit(void) +{ +#ifdef CONFIG_KVM_BOOK3S_32 + kvmppc_book3s_exit_pr(); +#endif + kvm_exit(); } + +module_init(kvmppc_book3s_init); +module_exit(kvmppc_book3s_exit); |