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| author | Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2020-11-27 05:44:04 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-12-03 15:01:24 +0100 |
| commit | 9f378b9f007cc94beadea40df83cc62a76975c6f (patch) | |
| tree | 07cd1b43acca428591f535d79d04b2b2efaf67bc /arch/powerpc/kvm | |
| parent | powerpc: Add new macro to handle NESTED_IFCLR (diff) | |
| download | linux-9f378b9f007cc94beadea40df83cc62a76975c6f.tar.xz linux-9f378b9f007cc94beadea40df83cc62a76975c6f.zip | |
KVM: PPC: BOOK3S: PR: Ignore UAMOR SPR
With power7 and above we expect the cpu to support keys. The
number of keys are firmware controlled based on device tree.
PR KVM do not expose key details via device tree. Hence when running with PR KVM
we do run with MMU_FTR_KEY support disabled. But we can still
get updates on UAMOR. Hence ignore access to them and for mfstpr return
0 indicating no AMR/IAMR update is no allowed.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201127044424.40686-3-aneesh.kumar@linux.ibm.com
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s_emulate.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 0effd48c8f4d..b08cc15f31c7 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -840,6 +840,9 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val) case SPRN_MMCR1: case SPRN_MMCR2: case SPRN_UMMCR2: + case SPRN_UAMOR: + case SPRN_IAMR: + case SPRN_AMR: #endif break; unprivileged: @@ -1004,6 +1007,9 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val case SPRN_MMCR2: case SPRN_UMMCR2: case SPRN_TIR: + case SPRN_UAMOR: + case SPRN_IAMR: + case SPRN_AMR: #endif *spr_val = 0; break; |