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-rw-r--r--hw/i386/pc.c4
-rw-r--r--hw/isa/lpc_ich9.c8
2 files changed, 10 insertions, 2 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 675e15c0aa..9e29f3792b 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -97,7 +97,9 @@
#include "trace.h"
#include CONFIG_DEVICES
-GlobalProperty pc_compat_5_2[] = {};
+GlobalProperty pc_compat_5_2[] = {
+ { "ICH9-LPC", "x-smi-cpu-hotunplug", "off" },
+};
const size_t pc_compat_5_2_len = G_N_ELEMENTS(pc_compat_5_2);
GlobalProperty pc_compat_5_1[] = {
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index da80430144..d3145bf014 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -392,6 +392,12 @@ static void smi_features_ok_callback(void *opaque)
return;
}
+ if (guest_cpu_hotplug_features ==
+ BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT)) {
+ /* cpu hot-unplug is unsupported without cpu-hotplug */
+ return;
+ }
+
/* valid feature subset requested, lock it down, report success */
lpc->smi_negotiated_features = guest_features;
lpc->smi_features_ok = 1;
@@ -774,7 +780,7 @@ static Property ich9_lpc_properties[] = {
DEFINE_PROP_BIT64("x-smi-cpu-hotplug", ICH9LPCState, smi_host_features,
ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT, true),
DEFINE_PROP_BIT64("x-smi-cpu-hotunplug", ICH9LPCState, smi_host_features,
- ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT, false),
+ ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT, true),
DEFINE_PROP_END_OF_LIST(),
};