diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-05-28 19:07:51 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-10 22:12:15 +1000 |
| commit | 0bf7e1b2e9a496e1ebca9e3e1f53c7e98add4417 (patch) | |
| tree | 816567a2bd821fe8818d03e818975af27583a184 /arch/powerpc/kvm/book3s_hv.c | |
| parent | 079a09a500c399f804effcf9bb49214cdfa698e5 (diff) | |
| download | linux-0bf7e1b2e9a496e1ebca9e3e1f53c7e98add4417.tar.bz2 | |
KVM: PPC: Book3S HV P9: implement hash host / hash guest support
Implement support for hash guests under hash host. This has to save and
restore the host SLB, and ensure that the MMU is off while switching
into the guest SLB.
POWER9 and later CPUs now always go via the P9 path. The "fast" guest
mode is now renamed to the P9 mode, which is consistent with its
functionality and the rest of the naming.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210528090752.3542186-32-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/kvm/book3s_hv.c')
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 662f599bdc0e..045458e7192a 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -4511,7 +4511,7 @@ static int kvmppc_vcpu_run_hv(struct kvm_vcpu *vcpu) vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST; do { - if (radix_enabled()) + if (cpu_has_feature(CPU_FTR_ARCH_300)) r = kvmhv_run_single_vcpu(vcpu, ~(u64)0, vcpu->arch.vcore->lpcr); else @@ -5599,6 +5599,8 @@ static int kvmhv_enable_nested(struct kvm *kvm) return -EPERM; if (!cpu_has_feature(CPU_FTR_ARCH_300)) return -ENODEV; + if (!radix_enabled()) + return -ENODEV; /* kvm == NULL means the caller is testing if the capability exists */ if (kvm) |