diff options
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 24bfe401373e..ac3ddf115f3d 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -529,6 +529,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_PPC_RMA: r = 0; break; + case KVM_CAP_PPC_HWRNG: + r = kvmppc_hwrng_present(); + break; #endif case KVM_CAP_SYNC_MMU: #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE @@ -720,7 +723,7 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, return; } - if (vcpu->arch.mmio_is_bigendian) { + if (!vcpu->arch.mmio_host_swabbed) { switch (run->mmio.len) { case 8: gpr = *(u64 *)run->mmio.data; break; case 4: gpr = *(u32 *)run->mmio.data; break; @@ -728,10 +731,10 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, case 1: gpr = *(u8 *)run->mmio.data; break; } } else { - /* Convert BE data from userland back to LE. */ switch (run->mmio.len) { - case 4: gpr = ld_le32((u32 *)run->mmio.data); break; - case 2: gpr = ld_le16((u16 *)run->mmio.data); break; + case 8: gpr = swab64(*(u64 *)run->mmio.data); break; + case 4: gpr = swab32(*(u32 *)run->mmio.data); break; + case 2: gpr = swab16(*(u16 *)run->mmio.data); break; case 1: gpr = *(u8 *)run->mmio.data; break; } } @@ -780,14 +783,13 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, int is_default_endian) { int idx, ret; - int is_bigendian; + bool host_swabbed; + /* Pity C doesn't have a logical XOR operator */ if (kvmppc_need_byteswap(vcpu)) { - /* Default endianness is "little endian". */ - is_bigendian = !is_default_endian; + host_swabbed = is_default_endian; } else { - /* Default endianness is "big endian". */ - is_bigendian = is_default_endian; + host_swabbed = !is_default_endian; } if (bytes > sizeof(run->mmio.data)) { @@ -800,7 +802,7 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, run->mmio.is_write = 0; vcpu->arch.io_gpr = rt; - vcpu->arch.mmio_is_bigendian = is_bigendian; + vcpu->arch.mmio_host_swabbed = host_swabbed; vcpu->mmio_needed = 1; vcpu->mmio_is_write = 0; vcpu->arch.mmio_sign_extend = 0; @@ -840,14 +842,13 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, { void *data = run->mmio.data; int idx, ret; - int is_bigendian; + bool host_swabbed; + /* Pity C doesn't have a logical XOR operator */ if (kvmppc_need_byteswap(vcpu)) { - /* Default endianness is "little endian". */ - is_bigendian = !is_default_endian; + host_swabbed = is_default_endian; } else { - /* Default endianness is "big endian". */ - is_bigendian = is_default_endian; + host_swabbed = !is_default_endian; } if (bytes > sizeof(run->mmio.data)) { @@ -862,7 +863,7 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, vcpu->mmio_is_write = 1; /* Store the value at the lowest bytes in 'data'. */ - if (is_bigendian) { + if (!host_swabbed) { switch (bytes) { case 8: *(u64 *)data = val; break; case 4: *(u32 *)data = val; break; @@ -870,11 +871,11 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, case 1: *(u8 *)data = val; break; } } else { - /* Store LE value into 'data'. */ switch (bytes) { - case 4: st_le32(data, val); break; - case 2: st_le16(data, val); break; - case 1: *(u8 *)data = val; break; + case 8: *(u64 *)data = swab64(val); break; + case 4: *(u32 *)data = swab32(val); break; + case 2: *(u16 *)data = swab16(val); break; + case 1: *(u8 *)data = val; break; } } |