[Xen-devel] [RFC QEMU PATCH v4 10/10] xen-hvm: enable building NFIT and SSDT of vNVDIMM for HVM domains

[Haozhong Zhang <haozhong.zhang@xxxxxxxxx>]

When QEMU is used the device model of Xen HVM domain and vNVDIMM
devices are present, enable building ACPI tables related to vNVDIMM.

Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
---
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Anthony Perard <anthony.perard@xxxxxxxxxx>
Cc: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Richard Henderson <rth@xxxxxxxxxxx>
Cc: Eduardo Habkost <ehabkost@xxxxxxxxxx>
---
 hw/i386/xen/xen-hvm.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/hw/i386/xen/xen-hvm.c b/hw/i386/xen/xen-hvm.c
index a7e99bd438..33447fc482 100644
--- a/hw/i386/xen/xen-hvm.c
+++ b/hw/i386/xen/xen-hvm.c
@@ -1236,6 +1236,11 @@ static void xen_wakeup_notifier(Notifier *notifier, void 
*data)
     xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 0);
 }
 
+static bool xen_dm_acpi_build_enabled(PCMachineState *pcms)
+{
+    return pcms->acpi_nvdimm_state.is_enabled;
+}
+
 static void xen_fw_cfg_init(PCMachineState *pcms)
 {
     FWCfgState *fw_cfg = fw_cfg_init_io(FW_CFG_IO_BASE);
@@ -1392,8 +1397,7 @@ void xen_hvm_init(PCMachineState *pcms, MemoryRegion 
**ram_memory)
     xen_be_register_common();
     xen_read_physmap(state);
 
-    /* Disable ACPI build because Xen handles it */
-    pcms->acpi_build_enabled = false;
+    pcms->acpi_build_enabled = xen_dm_acpi_build_enabled(pcms);;
     if (pcms->acpi_build_enabled) {
         xen_fw_cfg_init(pcms);
     }
@@ -1486,6 +1490,11 @@ void xen_acpi_build(AcpiBuildTables *tables, GArray 
*table_offsets,
         return;
     }
 
+    if (pcms->acpi_nvdimm_state.is_enabled) {
+        nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
+                          &pcms->acpi_nvdimm_state, machine->ram_slots);
+    }
+
     /*
      * QEMU RSDP and RSDT are only used by hvmloader to enumerate
      * QEMU-built tables. HVM domains still use Xen-built RSDP and RSDT.
-- 
2.15.1


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