virt: Increase DIMM alignment to support huge pages

The DIMM needs to be aligned to the size of the pages that are being used by the VMM. Increase it to 2 MiB so that it can be used with huge pages. Fixes: kata-containers/runtime#1698 Signed-off-by: Rob Bradford <[email protected]>
intel · May 17, 2019 · 4bcc167 · 4bcc167
1 parent 02dd00a
commit 4bcc167
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/hw/i386/virt/virt.c b/hw/i386/virt/virt.c
@@ -566,7 +566,8 @@ static void virt_dimm_pre_plug(HotplugHandler *hotplug_dev,
                          DeviceState *dev, Error **errp)
 {
     VirtMachineState *vms = VIRT_MACHINE(hotplug_dev);
-    const uint64_t legacy_align = TARGET_PAGE_SIZE;
+    // Align DIMM to 2MiB to accomodate huge pages
+    const uint64_t legacy_align = 0x200000;
     const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
     Error *local_err = NULL;