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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-04-26 19:43:42 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-05-06 16:19:12 +0200 |
| commit | 5b74716ebab10e7bce960d148fe6d8f6920451e5 (patch) | |
| tree | 169a36d6bcf64330f5bf026d9b064bfbe5582c85 /arch/powerpc/kvm/powerpc.c | |
| parent | f31e65e1170edba4a86bd8cba0318e251d3746d0 (diff) | |
| download | blackbird-op-linux-5b74716ebab10e7bce960d148fe6d8f6920451e5.tar.gz blackbird-op-linux-5b74716ebab10e7bce960d148fe6d8f6920451e5.zip | |
kvm/powerpc: Add new ioctl to retreive server MMU infos
This is necessary for qemu to be able to pass the right information
to the guest, such as the supported page sizes and corresponding
encodings in the SLB and hash table, which can vary depending
on the processor type, the type of KVM used (PR vs HV) and the
version of KVM
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[agraf: fix compilation on hv, adjust for newer ioctl numbers]
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 6ac31154d170..1493c8de947b 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -279,6 +279,11 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_MAX_VCPUS: r = KVM_MAX_VCPUS; break; +#ifdef CONFIG_PPC_BOOK3S_64 + case KVM_CAP_PPC_GET_SMMU_INFO: + r = 1; + break; +#endif default: r = 0; break; @@ -718,7 +723,6 @@ long kvm_arch_vcpu_ioctl(struct file *filp, break; } #endif - default: r = -EINVAL; } @@ -800,6 +804,18 @@ long kvm_arch_vm_ioctl(struct file *filp, } #endif /* CONFIG_KVM_BOOK3S_64_HV */ +#ifdef CONFIG_PPC_BOOK3S_64 + case KVM_PPC_GET_SMMU_INFO: { + struct kvm *kvm = filp->private_data; + struct kvm_ppc_smmu_info info; + + memset(&info, 0, sizeof(info)); + r = kvm_vm_ioctl_get_smmu_info(kvm, &info); + if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) + r = -EFAULT; + break; + } +#endif /* CONFIG_PPC_BOOK3S_64 */ default: r = -ENOTTY; } |
