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| author | Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> | 2016-04-29 13:25:43 (GMT) |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2016-05-01 08:32:40 (GMT) |
| commit | 50de596de8be6de75401a2190b90a822e8a1bab2 (patch) | |
| tree | a09516c1f30162e27bf2d5acd0fc48b24f787433 /arch/powerpc/kvm | |
| parent | e99833448c5fa198a120db6d7087dd17149dc273 (diff) | |
| download | linux-50de596de8be6de75401a2190b90a822e8a1bab2.tar.xz | |
powerpc/mm/hash: Add support for Power9 Hash
PowerISA 3.0 adds a parition table indexed by LPID. Parition table
allows us to specify the MMU model that will be used for guest and host
translation.
This patch adds support with SLB based hash model (UPRT = 0). What is
required with this model is to support the new hash page table entry
format and also setup partition table such that we use hash table for
address translation.
We don't have segment table support yet.
In order to make sure we don't load KVM module on Power9 (since we don't
have kvm support yet) this patch also disables KVM on Power9.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 6 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_pr.c | 6 |
2 files changed, 11 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 84fb4fc..4cd37b4 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -3271,6 +3271,12 @@ static int kvmppc_core_check_processor_compat_hv(void) if (!cpu_has_feature(CPU_FTR_HVMODE) || !cpu_has_feature(CPU_FTR_ARCH_206)) return -EIO; + /* + * Disable KVM for Power9, untill the required bits merged. + */ + if (cpu_has_feature(CPU_FTR_ARCH_300)) + return -EIO; + return 0; } diff --git a/arch/powerpc/kvm/book3s_pr.c b/arch/powerpc/kvm/book3s_pr.c index 95bceca..ffbaf40 100644 --- a/arch/powerpc/kvm/book3s_pr.c +++ b/arch/powerpc/kvm/book3s_pr.c @@ -1683,7 +1683,11 @@ static void kvmppc_core_destroy_vm_pr(struct kvm *kvm) static int kvmppc_core_check_processor_compat_pr(void) { - /* we are always compatible */ + /* + * Disable KVM for Power9 untill the required bits merged. + */ + if (cpu_has_feature(CPU_FTR_ARCH_300)) + return -EIO; return 0; } |