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| author | Alexander Graf <agraf@suse.de> | 2012-01-16 19:12:11 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 13:57:28 +0100 |
| commit | d2a1b483a4a3f4bbb5fec1877f716c15ac7fa405 (patch) | |
| tree | 3c1e6162250afb6c79f846749d91d71d2ccc0712 /arch/powerpc/include/asm | |
| parent | KVM: PPC: Initialize linears with zeros (diff) | |
| download | linux-d2a1b483a4a3f4bbb5fec1877f716c15ac7fa405.tar.xz linux-d2a1b483a4a3f4bbb5fec1877f716c15ac7fa405.zip | |
KVM: PPC: Add HPT preallocator
We're currently allocating 16MB of linear memory on demand when creating
a guest. That does work some times, but finding 16MB of linear memory
available in the system at runtime is definitely not a given.
So let's add another command line option similar to the RMA preallocator,
that we can use to keep a pool of page tables around. Now, when a guest
gets created it has a pretty low chance of receiving an OOM.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_host.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/kvm_ppc.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h index 8221e717bbce..1843d5d2a3be 100644 --- a/arch/powerpc/include/asm/kvm_host.h +++ b/arch/powerpc/include/asm/kvm_host.h @@ -235,6 +235,7 @@ struct kvm_arch { int slot_npages[KVM_MEM_SLOTS_NUM]; unsigned short last_vcpu[NR_CPUS]; struct kvmppc_vcore *vcores[KVM_MAX_VCORES]; + struct kvmppc_linear_info *hpt_li; #endif /* CONFIG_KVM_BOOK3S_64_HV */ }; diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h index 1c37a2f8d0f4..9d6dee0f7d48 100644 --- a/arch/powerpc/include/asm/kvm_ppc.h +++ b/arch/powerpc/include/asm/kvm_ppc.h @@ -130,6 +130,8 @@ extern long kvm_vm_ioctl_allocate_rma(struct kvm *kvm, struct kvm_allocate_rma *rma); extern struct kvmppc_linear_info *kvm_alloc_rma(void); extern void kvm_release_rma(struct kvmppc_linear_info *ri); +extern struct kvmppc_linear_info *kvm_alloc_hpt(void); +extern void kvm_release_hpt(struct kvmppc_linear_info *li); extern int kvmppc_core_init_vm(struct kvm *kvm); extern void kvmppc_core_destroy_vm(struct kvm *kvm); extern int kvmppc_core_prepare_memory_region(struct kvm *kvm, |