static int cap_ppc_smt;
static int cap_ppc_rma;
static int cap_spapr_tce;
+static int cap_hior;
/* XXX We have a race condition where we actually have a level triggered
* interrupt, but the infrastructure can't expose that yet, so the guest
cap_ppc_smt = kvm_check_extension(s, KVM_CAP_PPC_SMT);
cap_ppc_rma = kvm_check_extension(s, KVM_CAP_PPC_RMA);
cap_spapr_tce = kvm_check_extension(s, KVM_CAP_SPAPR_TCE);
+ cap_hior = kvm_check_extension(s, KVM_CAP_PPC_HIOR);
if (!cap_interrupt_level) {
fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the "
env->tlb_dirty = false;
}
+ if (cap_segstate && (level >= KVM_PUT_RESET_STATE)) {
+ struct kvm_sregs sregs;
+
+ sregs.pvr = env->spr[SPR_PVR];
+
+ sregs.u.s.sdr1 = env->spr[SPR_SDR1];
+
+ /* Sync SLB */
+#ifdef TARGET_PPC64
+ for (i = 0; i < 64; i++) {
+ sregs.u.s.ppc64.slb[i].slbe = env->slb[i].esid;
+ sregs.u.s.ppc64.slb[i].slbv = env->slb[i].vsid;
+ }
+#endif
+
+ /* Sync SRs */
+ for (i = 0; i < 16; i++) {
+ sregs.u.s.ppc32.sr[i] = env->sr[i];
+ }
+
+ /* Sync BATs */
+ for (i = 0; i < 8; i++) {
+ /* Beware. We have to swap upper and lower bits here */
+ sregs.u.s.ppc32.dbat[i] = ((uint64_t)env->DBAT[0][i] << 32)
+ | env->DBAT[1][i];
+ sregs.u.s.ppc32.ibat[i] = ((uint64_t)env->IBAT[0][i] << 32)
+ | env->IBAT[1][i];
+ }
+
+ ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
+ if (ret) {
+ return ret;
+ }
+ }
+
+ if (cap_hior && (level >= KVM_PUT_RESET_STATE)) {
+ uint64_t hior = env->spr[SPR_HIOR];
+ struct kvm_one_reg reg = {
+ .id = KVM_REG_PPC_HIOR,
+ .addr = (uintptr_t) &hior,
+ };
+
+ ret = kvm_vcpu_ioctl(env, KVM_SET_ONE_REG, ®);
+ if (ret) {
+ return ret;
+ }
+ }
+
return ret;
}
break;
}
if (!strncmp(line, field, field_len)) {
- strncpy(value, line, len);
+ pstrcpy(value, len, line);
ret = 0;
break;
}
void kvmppc_set_papr(CPUPPCState *env)
{
struct kvm_enable_cap cap = {};
- struct kvm_one_reg reg = {};
- struct kvm_sregs sregs = {};
int ret;
- uint64_t hior = env->spr[SPR_HIOR];
cap.cap = KVM_CAP_PPC_PAPR;
ret = kvm_vcpu_ioctl(env, KVM_ENABLE_CAP, &cap);
if (ret) {
- goto fail;
- }
-
- /*
- * XXX We set HIOR here. It really should be a qdev property of
- * the CPU node, but we don't have CPUs converted to qdev yet.
- *
- * Once we have qdev CPUs, move HIOR to a qdev property and
- * remove this chunk.
- */
- reg.id = KVM_REG_PPC_HIOR;
- reg.addr = (uintptr_t)&hior;
- ret = kvm_vcpu_ioctl(env, KVM_SET_ONE_REG, ®);
- if (ret) {
- fprintf(stderr, "Couldn't set HIOR. Maybe you're running an old \n"
- "kernel with support for HV KVM but no PAPR PR \n"
- "KVM in which case things will work. If they don't \n"
- "please update your host kernel!\n");
- }
-
- /* Set SDR1 so kernel space finds the HTAB */
- ret = kvm_vcpu_ioctl(env, KVM_GET_SREGS, &sregs);
- if (ret) {
- goto fail;
+ cpu_abort(env, "This KVM version does not support PAPR\n");
}
-
- sregs.u.s.sdr1 = env->spr[SPR_SDR1];
-
- ret = kvm_vcpu_ioctl(env, KVM_SET_SREGS, &sregs);
- if (ret) {
- goto fail;
- }
-
- return;
-
-fail:
- cpu_abort(env, "This KVM version does not support PAPR\n");
}
int kvmppc_smt_threads(void)
return cap_ppc_smt ? cap_ppc_smt : 1;
}
+#ifdef TARGET_PPC64
off_t kvmppc_alloc_rma(const char *name, MemoryRegion *sysmem)
{
void *rma;
return size;
}
+uint64_t kvmppc_rma_size(uint64_t current_size, unsigned int hash_shift)
+{
+ if (cap_ppc_rma >= 2) {
+ return current_size;
+ }
+ return MIN(current_size,
+ getrampagesize() << (hash_shift - 7));
+}
+#endif
+
void *kvmppc_create_spapr_tce(uint32_t liobn, uint32_t window_size, int *pfd)
{
struct kvm_create_spapr_tce args = {
return 0;
}
+int kvmppc_reset_htab(int shift_hint)
+{
+ uint32_t shift = shift_hint;
+
+ if (!kvm_enabled()) {
+ /* Full emulation, tell caller to allocate htab itself */
+ return 0;
+ }
+ if (kvm_check_extension(kvm_state, KVM_CAP_PPC_ALLOC_HTAB)) {
+ int ret;
+ ret = kvm_vm_ioctl(kvm_state, KVM_PPC_ALLOCATE_HTAB, &shift);
+ if (ret == -ENOTTY) {
+ /* At least some versions of PR KVM advertise the
+ * capability, but don't implement the ioctl(). Oops.
+ * Return 0 so that we allocate the htab in qemu, as is
+ * correct for PR. */
+ return 0;
+ } else if (ret < 0) {
+ return ret;
+ }
+ return shift;
+ }
+
+ /* We have a kernel that predates the htab reset calls. For PR
+ * KVM, we need to allocate the htab ourselves, for an HV KVM of
+ * this era, it has allocated a 16MB fixed size hash table
+ * already. Kernels of this era have the GET_PVINFO capability
+ * only on PR, so we use this hack to determine the right
+ * answer */
+ if (kvm_check_extension(kvm_state, KVM_CAP_PPC_GET_PVINFO)) {
+ /* PR - tell caller to allocate htab */
+ return 0;
+ } else {
+ /* HV - assume 16MB kernel allocated htab */
+ return 24;
+ }
+}
+
static inline uint32_t mfpvr(void)
{
uint32_t pvr;
projects / mirror_qemu.git / blobdiff