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KVM: PPC: Book3S HV: Make HPT-specific hypercalls return error in radix mode

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If the guest is in radix mode, then it doesn't have a hashed page
table (HPT), so all of the hypercalls that manipulate the HPT can't
work and should return an error.  This adds checks to make them
return H_FUNCTION ("function not supported").

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Paul Mackerras 2017-01-30 21:21:49 +11:00 committed by Michael Ellerman
parent 8f7b79b837
commit 65dae5403a
1 changed files with 14 additions and 0 deletions
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14
arch/powerpc/kvm/book3s_hv_rm_mmu.c
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@ -182,6 +182,8 @@ long kvmppc_do_h_enter(struct kvm *kvm, unsigned long flags,
unsigned long mmu_seq;
unsigned long rcbits, irq_flags = 0;
if (kvm_is_radix(kvm))
return H_FUNCTION;
psize = hpte_page_size(pteh, ptel);
if (!psize)
return H_PARAMETER;
@ -458,6 +460,8 @@ long kvmppc_do_h_remove(struct kvm *kvm, unsigned long flags,
struct revmap_entry *rev;
u64 pte, orig_pte, pte_r;
if (kvm_is_radix(kvm))
return H_FUNCTION;
if (pte_index >= kvm->arch.hpt_npte)
return H_PARAMETER;
hpte = (__be64 *)(kvm->arch.hpt_virt + (pte_index << 4));
@ -529,6 +533,8 @@ long kvmppc_h_bulk_remove(struct kvm_vcpu *vcpu)
struct revmap_entry *rev, *revs[4];
u64 hp0, hp1;
if (kvm_is_radix(kvm))
return H_FUNCTION;
global = global_invalidates(kvm, 0);
for (i = 0; i < 4 && ret == H_SUCCESS; ) {
n = 0;
@ -642,6 +648,8 @@ long kvmppc_h_protect(struct kvm_vcpu *vcpu, unsigned long flags,
unsigned long v, r, rb, mask, bits;
u64 pte_v, pte_r;
if (kvm_is_radix(kvm))
return H_FUNCTION;
if (pte_index >= kvm->arch.hpt_npte)
return H_PARAMETER;
@ -711,6 +719,8 @@ long kvmppc_h_read(struct kvm_vcpu *vcpu, unsigned long flags,
int i, n = 1;
struct revmap_entry *rev = NULL;
if (kvm_is_radix(kvm))
return H_FUNCTION;
if (pte_index >= kvm->arch.hpt_npte)
return H_PARAMETER;
if (flags & H_READ_4) {
@ -750,6 +760,8 @@ long kvmppc_h_clear_ref(struct kvm_vcpu *vcpu, unsigned long flags,
unsigned long *rmap;
long ret = H_NOT_FOUND;
if (kvm_is_radix(kvm))
return H_FUNCTION;
if (pte_index >= kvm->arch.hpt_npte)
return H_PARAMETER;
@ -796,6 +808,8 @@ long kvmppc_h_clear_mod(struct kvm_vcpu *vcpu, unsigned long flags,
unsigned long *rmap;
long ret = H_NOT_FOUND;
if (kvm_is_radix(kvm))
return H_FUNCTION;
if (pte_index >= kvm->arch.hpt_npte)
return H_PARAMETER;