[Qemu-devel] [PATCH v7 wave 2 3/3] hw/isa/lpc_ich9: negotiate SMI broadcast on pc-q35-2.9+ machine types

[Laszlo Ersek <lersek@redhat.com>]

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
---

Notes:
    v7:
    - no functional changes, pick up Igor's R-b
    - rebase to master, resolve conflict with commit abc62c89f319 ("pc.h:
      move x-mach-use-reliable-get-clock compat entry to PC_COMPAT_2_8",
      2017-01-18)
    
    v6:
    - rename "smi_broadcast" to "x-smi-broadcast" [Eduardo]
    - pick up Eduardo's R-b
    - pick up Michael's R-b
    
    v5:
    - replace the v4 patch "hw/i386/pc_q35: advertise broadcast SMI if VCPU
      hotplug is turned off" with a simple device property and compat
      setting [Igor]

 include/hw/i386/pc.h | 6 ++++++
 hw/isa/lpc_ich9.c    | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 5a20c5e38ef5..b89441d2c49f 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -381,6 +381,12 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
         .property = "x-mach-use-reliable-get-clock",\
         .value    = "off",\
     },\
+    {\
+        .driver   = "ICH9-LPC",\
+        .property = "x-smi-broadcast",\
+        .value    = "off",\
+    },\
+
 
 #define PC_COMPAT_2_7 \
     HW_COMPAT_2_7 \
diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
index ced6f803a4f2..59930dd9d09d 100644
--- a/hw/isa/lpc_ich9.c
+++ b/hw/isa/lpc_ich9.c
@@ -776,6 +776,8 @@ static const VMStateDescription vmstate_ich9_lpc = {
 
 static Property ich9_lpc_properties[] = {
     DEFINE_PROP_BOOL("noreboot", ICH9LPCState, pin_strap.spkr_hi, true),
+    DEFINE_PROP_BIT64("x-smi-broadcast", ICH9LPCState, smi_host_features,
+                      ICH9_LPC_SMI_F_BROADCAST_BIT, true),
     DEFINE_PROP_END_OF_LIST(),
 };
 
-- 
2.9.3