* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
+
#include "qemu/osdep.h"
#include "qemu/error-report.h"
#include "qapi/error.h"
#include "target/ppc/mmu-hash64.h"
#include "cpu-models.h"
#include "kvm_ppc.h"
+#include "migration/vmstate.h"
#include "sysemu/qtest.h"
+#include "sysemu/tcg.h"
#include "hw/ppc/spapr.h"
void (*apply)(SpaprMachineState *spapr, uint8_t val, Error **errp);
void (*cpu_apply)(SpaprMachineState *spapr, PowerPCCPU *cpu,
uint8_t val, Error **errp);
+ bool (*migrate_needed)(void *opaque);
} SpaprCapabilityInfo;
static void spapr_cap_get_bool(Object *obj, Visitor *v, const char *name,
}
if (tcg_enabled()) {
error_setg(errp,
- "No Transactional Memory support in TCG, try cap-htm=off");
+ "No Transactional Memory support in TCG,"
+ " try appending -machine cap-htm=off");
} else if (kvm_enabled() && !kvmppc_has_cap_htm()) {
error_setg(errp,
-"KVM implementation does not support Transactional Memory, try cap-htm=off"
+"KVM implementation does not support Transactional Memory,"
+ " try appending -machine cap-htm=off"
);
}
}
* rid of anything that doesn't do VMX */
g_assert(env->insns_flags & PPC_ALTIVEC);
if (!(env->insns_flags2 & PPC2_VSX)) {
- error_setg(errp, "VSX support not available, try cap-vsx=off");
+ error_setg(errp, "VSX support not available,"
+ " try appending -machine cap-vsx=off");
}
}
return;
}
if (!(env->insns_flags2 & PPC2_DFP)) {
- error_setg(errp, "DFP support not available, try cap-dfp=off");
+ error_setg(errp, "DFP support not available,"
+ " try appending -machine cap-dfp=off");
}
}
cap_cfpc_possible.vals[val]);
} else if (kvm_enabled() && (val > kvm_val)) {
error_setg(errp,
-"Requested safe cache capability level not supported by kvm, try cap-cfpc=%s",
+ "Requested safe cache capability level not supported by kvm,"
+ " try appending -machine cap-cfpc=%s",
cap_cfpc_possible.vals[kvm_val]);
}
cap_sbbc_possible.vals[val]);
} else if (kvm_enabled() && (val > kvm_val)) {
error_setg(errp,
-"Requested safe bounds check capability level not supported by kvm, try cap-sbbc=%s",
+"Requested safe bounds check capability level not supported by kvm,"
+ " try appending -machine cap-sbbc=%s",
cap_sbbc_possible.vals[kvm_val]);
}
cap_ibs_possible.vals[val]);
} else if (kvm_enabled() && (val > kvm_val)) {
error_setg(errp,
-"Requested safe indirect branch capability level not supported by kvm, try cap-ibs=%s",
+"Requested safe indirect branch capability level not supported by kvm,"
+ " try appending -machine cap-ibs=%s",
cap_ibs_possible.vals[kvm_val]);
}
warn_report("Many guests require at least 64kiB hpt-max-page-size");
}
- spapr_check_pagesize(spapr, qemu_getrampagesize(), errp);
+ spapr_check_pagesize(spapr, qemu_minrampagesize(), errp);
+}
+
+static bool cap_hpt_maxpagesize_migrate_needed(void *opaque)
+{
+ return !SPAPR_MACHINE_GET_CLASS(opaque)->pre_4_1_migration;
}
static bool spapr_pagesize_cb(void *opaque, uint32_t seg_pshift,
if (tcg_enabled()) {
error_setg(errp,
- "No Nested KVM-HV support in tcg, try cap-nested-hv=off");
+ "No Nested KVM-HV support in tcg,"
+ " try appending -machine cap-nested-hv=off");
} else if (kvm_enabled()) {
if (!kvmppc_has_cap_nested_kvm_hv()) {
error_setg(errp,
-"KVM implementation does not support Nested KVM-HV, try cap-nested-hv=off");
+"KVM implementation does not support Nested KVM-HV,"
+ " try appending -machine cap-nested-hv=off");
} else if (kvmppc_set_cap_nested_kvm_hv(val) < 0) {
error_setg(errp,
"Error enabling cap-nested-hv with KVM, try cap-nested-hv=off");
if (!kvm_nr_bits) {
error_setg(errp,
- "No large decrementer support, try cap-large-decr=off");
+ "No large decrementer support,"
+ " try appending -machine cap-large-decr=off");
} else if (pcc->lrg_decr_bits != kvm_nr_bits) {
error_setg(errp,
-"KVM large decrementer size (%d) differs to model (%d), try -cap-large-decr=off",
+"KVM large decrementer size (%d) differs to model (%d),"
+ " try appending -machine cap-large-decr=off",
kvm_nr_bits, pcc->lrg_decr_bits);
}
}
if (kvm_enabled()) {
if (kvmppc_enable_cap_large_decr(cpu, val)) {
error_setg(errp,
- "No large decrementer support, try cap-large-decr=off");
+ "No large decrementer support,"
+ " try appending -machine cap-large-decr=off");
}
}
uint8_t kvm_val = kvmppc_get_cap_count_cache_flush_assist();
if (tcg_enabled() && val) {
- /* TODO - for now only allow broken for TCG */
- error_setg(errp,
-"Requested count cache flush assist capability level not supported by tcg, try cap-ccf-assist=off");
+ /* TCG doesn't implement anything here, but allow with a warning */
+ warn_report("TCG doesn't support requested feature, cap-ccf-assist=on");
} else if (kvm_enabled() && (val > kvm_val)) {
+ uint8_t kvm_ibs = kvmppc_get_cap_safe_indirect_branch();
+
+ if (kvm_ibs == SPAPR_CAP_FIXED_CCD) {
+ /*
+ * If we don't have CCF assist on the host, the assist
+ * instruction is a harmless no-op. It won't correctly
+ * implement the cache count flush *but* if we have
+ * count-cache-disabled in the host, that flush is
+ * unnnecessary. So, specifically allow this case. This
+ * allows us to have better performance on POWER9 DD2.3,
+ * while still working on POWER9 DD2.2 and POWER8 host
+ * cpus.
+ */
+ return;
+ }
error_setg(errp,
-"Requested count cache flush assist capability level not supported by kvm, try cap-ccf-assist=off");
+"Requested count cache flush assist capability level not supported by kvm,"
+ " try appending -machine cap-ccf-assist=off");
+ }
+}
+
+static void cap_fwnmi_apply(SpaprMachineState *spapr, uint8_t val,
+ Error **errp)
+{
+ if (!val) {
+ return; /* Disabled by default */
+ }
+
+ if (kvm_enabled()) {
+ if (!kvmppc_get_fwnmi()) {
+ error_setg(errp,
+"Firmware Assisted Non-Maskable Interrupts(FWNMI) not supported by KVM.");
+ error_append_hint(errp, "Try appending -machine cap-fwnmi=off\n");
+ }
}
}
.type = "int",
.apply = cap_hpt_maxpagesize_apply,
.cpu_apply = cap_hpt_maxpagesize_cpu_apply,
+ .migrate_needed = cap_hpt_maxpagesize_migrate_needed,
},
[SPAPR_CAP_NESTED_KVM_HV] = {
.name = "nested-hv",
.type = "bool",
.apply = cap_ccf_assist_apply,
},
+ [SPAPR_CAP_FWNMI] = {
+ .name = "fwnmi",
+ .description = "Implements PAPR FWNMI option",
+ .index = SPAPR_CAP_FWNMI,
+ .get = spapr_cap_get_bool,
+ .set = spapr_cap_set_bool,
+ .type = "bool",
+ .apply = cap_fwnmi_apply,
+ },
};
static SpaprCapabilities default_caps_with_cpu(SpaprMachineState *spapr,
uint8_t mps;
if (kvmppc_hpt_needs_host_contiguous_pages()) {
- mps = ctz64(qemu_getrampagesize());
+ mps = ctz64(qemu_minrampagesize());
} else {
mps = 34; /* allow everything up to 16GiB, i.e. everything */
}
static bool spapr_cap_##sname##_needed(void *opaque) \
{ \
SpaprMachineState *spapr = opaque; \
+ bool (*needed)(void *opaque) = \
+ capability_table[cap].migrate_needed; \
\
- return spapr->cmd_line_caps[cap] && \
+ return needed ? needed(opaque) : true && \
+ spapr->cmd_line_caps[cap] && \
(spapr->eff.caps[cap] != \
spapr->def.caps[cap]); \
} \
SPAPR_CAP_MIG_STATE(cfpc, SPAPR_CAP_CFPC);
SPAPR_CAP_MIG_STATE(sbbc, SPAPR_CAP_SBBC);
SPAPR_CAP_MIG_STATE(ibs, SPAPR_CAP_IBS);
+SPAPR_CAP_MIG_STATE(hpt_maxpagesize, SPAPR_CAP_HPT_MAXPAGESIZE);
SPAPR_CAP_MIG_STATE(nested_kvm_hv, SPAPR_CAP_NESTED_KVM_HV);
SPAPR_CAP_MIG_STATE(large_decr, SPAPR_CAP_LARGE_DECREMENTER);
SPAPR_CAP_MIG_STATE(ccf_assist, SPAPR_CAP_CCF_ASSIST);
+SPAPR_CAP_MIG_STATE(fwnmi, SPAPR_CAP_FWNMI);
void spapr_caps_init(SpaprMachineState *spapr)
{
void spapr_caps_add_properties(SpaprMachineClass *smc, Error **errp)
{
- Error *local_err = NULL;
ObjectClass *klass = OBJECT_CLASS(smc);
int i;
for (i = 0; i < ARRAY_SIZE(capability_table); i++) {
SpaprCapabilityInfo *cap = &capability_table[i];
- const char *name = g_strdup_printf("cap-%s", cap->name);
+ char *name = g_strdup_printf("cap-%s", cap->name);
char *desc;
object_class_property_add(klass, name, cap->type,
cap->get, cap->set,
- NULL, cap, &local_err);
- if (local_err) {
- error_propagate(errp, local_err);
- return;
- }
+ NULL, cap);
desc = g_strdup_printf("%s", cap->description);
- object_class_property_set_description(klass, name, desc, &local_err);
+ object_class_property_set_description(klass, name, desc);
+ g_free(name);
g_free(desc);
- if (local_err) {
- error_propagate(errp, local_err);
- return;
- }
}
}
projects / mirror_qemu.git / blobdiff