Commit 31217db7 authored by Alexey Kardashevskiy's avatar Alexey Kardashevskiy Committed by Paolo Bonzini

KVM: PPC: Create a virtual-mode only TCE table handlers

Upcoming in-kernel VFIO acceleration needs different handling in real
and virtual modes which makes it hard to support both modes in
the same handler.

This creates a copy of kvmppc_rm_h_stuff_tce and kvmppc_rm_h_put_tce
in addition to the existing kvmppc_rm_h_put_tce_indirect.

This also fixes linker breakage when only PR KVM was selected (leaving
HV KVM off): the kvmppc_h_put_tce/kvmppc_h_stuff_tce functions
would not compile at all and the linked would fail.
Signed-off-by: default avatarAlexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent ef697a71
......@@ -209,6 +209,32 @@ long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm,
return ret;
}
long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba, unsigned long tce)
{
struct kvmppc_spapr_tce_table *stt = kvmppc_find_table(vcpu, liobn);
long ret;
/* udbg_printf("H_PUT_TCE(): liobn=0x%lx ioba=0x%lx, tce=0x%lx\n", */
/* liobn, ioba, tce); */
if (!stt)
return H_TOO_HARD;
ret = kvmppc_ioba_validate(stt, ioba, 1);
if (ret != H_SUCCESS)
return ret;
ret = kvmppc_tce_validate(stt, tce);
if (ret != H_SUCCESS)
return ret;
kvmppc_tce_put(stt, ioba >> stt->page_shift, tce);
return H_SUCCESS;
}
EXPORT_SYMBOL_GPL(kvmppc_h_put_tce);
long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
unsigned long liobn, unsigned long ioba,
unsigned long tce_list, unsigned long npages)
......@@ -264,3 +290,29 @@ long kvmppc_h_put_tce_indirect(struct kvm_vcpu *vcpu,
return ret;
}
EXPORT_SYMBOL_GPL(kvmppc_h_put_tce_indirect);
long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
unsigned long liobn, unsigned long ioba,
unsigned long tce_value, unsigned long npages)
{
struct kvmppc_spapr_tce_table *stt;
long i, ret;
stt = kvmppc_find_table(vcpu, liobn);
if (!stt)
return H_TOO_HARD;
ret = kvmppc_ioba_validate(stt, ioba, npages);
if (ret != H_SUCCESS)
return ret;
/* Check permission bits only to allow userspace poison TCE for debug */
if (tce_value & (TCE_PCI_WRITE | TCE_PCI_READ))
return H_PARAMETER;
for (i = 0; i < npages; ++i, ioba += (1ULL << stt->page_shift))
kvmppc_tce_put(stt, ioba >> stt->page_shift, tce_value);
return H_SUCCESS;
}
EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce);
......@@ -180,7 +180,7 @@ long kvmppc_gpa_to_ua(struct kvm *kvm, unsigned long gpa,
EXPORT_SYMBOL_GPL(kvmppc_gpa_to_ua);
#ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE
long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
long kvmppc_rm_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba, unsigned long tce)
{
struct kvmppc_spapr_tce_table *stt = kvmppc_find_table(vcpu, liobn);
......@@ -204,7 +204,6 @@ long kvmppc_h_put_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
return H_SUCCESS;
}
EXPORT_SYMBOL_GPL(kvmppc_h_put_tce);
static long kvmppc_rm_ua_to_hpa(struct kvm_vcpu *vcpu,
unsigned long ua, unsigned long *phpa)
......@@ -296,7 +295,7 @@ long kvmppc_rm_h_put_tce_indirect(struct kvm_vcpu *vcpu,
return ret;
}
long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
long kvmppc_rm_h_stuff_tce(struct kvm_vcpu *vcpu,
unsigned long liobn, unsigned long ioba,
unsigned long tce_value, unsigned long npages)
{
......@@ -320,7 +319,6 @@ long kvmppc_h_stuff_tce(struct kvm_vcpu *vcpu,
return H_SUCCESS;
}
EXPORT_SYMBOL_GPL(kvmppc_h_stuff_tce);
long kvmppc_h_get_tce(struct kvm_vcpu *vcpu, unsigned long liobn,
unsigned long ioba)
......
......@@ -1942,7 +1942,7 @@ hcall_real_table:
.long DOTSYM(kvmppc_h_clear_ref) - hcall_real_table
.long DOTSYM(kvmppc_h_protect) - hcall_real_table
.long DOTSYM(kvmppc_h_get_tce) - hcall_real_table
.long DOTSYM(kvmppc_h_put_tce) - hcall_real_table
.long DOTSYM(kvmppc_rm_h_put_tce) - hcall_real_table
.long 0 /* 0x24 - H_SET_SPRG0 */
.long DOTSYM(kvmppc_h_set_dabr) - hcall_real_table
.long 0 /* 0x2c */
......@@ -2020,7 +2020,7 @@ hcall_real_table:
.long 0 /* 0x12c */
.long 0 /* 0x130 */
.long DOTSYM(kvmppc_h_set_xdabr) - hcall_real_table
.long DOTSYM(kvmppc_h_stuff_tce) - hcall_real_table
.long DOTSYM(kvmppc_rm_h_stuff_tce) - hcall_real_table
.long DOTSYM(kvmppc_rm_h_put_tce_indirect) - hcall_real_table
.long 0 /* 0x140 */
.long 0 /* 0x144 */
......
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