diff options
| author | Paul Mackerras <paulus@samba.org> | 2013-09-20 14:52:49 +1000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-10-17 14:45:05 +0200 |
| commit | 3ff955024d186c512ee91263df9c850d6ae34a12 (patch) | |
| tree | a76e934a4a82fa68e47bcca8c09fbc32aeae4169 /arch/powerpc/kvm/book3s_pr.c | |
| parent | 9308ab8e2da933d895ebbb903bf459e33ed94dec (diff) | |
| download | linux-3ff955024d186c512ee91263df9c850d6ae34a12.tar.bz2 | |
KVM: PPC: Book3S PR: Allocate kvm_vcpu structs from kvm_vcpu_cache
This makes PR KVM allocate its kvm_vcpu structs from the kvm_vcpu_cache
rather than having them embedded in the kvmppc_vcpu_book3s struct,
which is allocated with vzalloc. The reason is to reduce the
differences between PR and HV KVM in order to make is easier to have
them coexist in one kernel binary.
With this, the kvm_vcpu struct has a pointer to the kvmppc_vcpu_book3s
struct. The pointer to the kvmppc_book3s_shadow_vcpu struct has moved
from the kvmppc_vcpu_book3s struct to the kvm_vcpu struct, and is only
present for 32-bit, since it is only used for 32-bit.
Signed-off-by: Paul Mackerras <paulus@samba.org>
[agraf: squash in compile fix from Aneesh]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/book3s_pr.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_pr.c | 33 |
1 files changed, 21 insertions, 12 deletions
diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 4fa73c3f5713..677d7e33b1ff 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -66,7 +66,7 @@ void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) #endif vcpu->cpu = smp_processor_id(); #ifdef CONFIG_PPC_BOOK3S_32 - current->thread.kvm_shadow_vcpu = to_book3s(vcpu)->shadow_vcpu; + current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu; #endif } @@ -1125,17 +1125,22 @@ struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) int err = -ENOMEM; unsigned long p; + vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); + if (!vcpu) + goto out; + vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s)); if (!vcpu_book3s) - goto out; + goto free_vcpu; + vcpu->arch.book3s = vcpu_book3s; #ifdef CONFIG_KVM_BOOK3S_32 - vcpu_book3s->shadow_vcpu = - kzalloc(sizeof(*vcpu_book3s->shadow_vcpu), GFP_KERNEL); - if (!vcpu_book3s->shadow_vcpu) - goto free_vcpu; + vcpu->arch.shadow_vcpu = + kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL); + if (!vcpu->arch.shadow_vcpu) + goto free_vcpu3s; #endif - vcpu = &vcpu_book3s->vcpu; + err = kvm_vcpu_init(vcpu, kvm, id); if (err) goto free_shadow_vcpu; @@ -1175,10 +1180,12 @@ uninit_vcpu: kvm_vcpu_uninit(vcpu); free_shadow_vcpu: #ifdef CONFIG_KVM_BOOK3S_32 - kfree(vcpu_book3s->shadow_vcpu); -free_vcpu: + kfree(vcpu->arch.shadow_vcpu); +free_vcpu3s: #endif vfree(vcpu_book3s); +free_vcpu: + kmem_cache_free(kvm_vcpu_cache, vcpu); out: return ERR_PTR(err); } @@ -1189,8 +1196,11 @@ void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) free_page((unsigned long)vcpu->arch.shared & PAGE_MASK); kvm_vcpu_uninit(vcpu); - kfree(vcpu_book3s->shadow_vcpu); +#ifdef CONFIG_KVM_BOOK3S_32 + kfree(vcpu->arch.shadow_vcpu); +#endif vfree(vcpu_book3s); + kmem_cache_free(kvm_vcpu_cache, vcpu); } int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) @@ -1452,8 +1462,7 @@ static int kvmppc_book3s_init(void) { int r; - r = kvm_init(NULL, sizeof(struct kvmppc_vcpu_book3s), 0, - THIS_MODULE); + r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); if (r) return r; |