i386: switch boards to "default y"

Some targets use "default y" for boards to filter out those that require
TCG.  For consistency we are switching all other targets to do the same.
Continue with i386.

No changes to generated config-devices.mak files, other than
adding CONFIG_I386 to the x86_64-softmmu target.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

.gitlab-ci.d/buildtest.yml

@@ -648,7 +648,8 @@ build-tci:
     - make check-tcg
 
 # Check our reduced build configurations
-# requires libfdt: aarch64, arm
+# requires libfdt: aarch64, arm, i386, x86_64
+# does not build without boards: i386, x86_64
 build-without-defaults:
   extends: .native_build_job_template
   needs:

configs/devices/i386-softmmu/default.mak

@@ -24,9 +24,8 @@
 #CONFIG_VTD=n
 #CONFIG_SGX=n
 
-# Boards:
-#
-CONFIG_ISAPC=y
-CONFIG_I440FX=y
-CONFIG_Q35=y
-CONFIG_MICROVM=y
+# Boards are selected by default, uncomment to keep out of the build.
+# CONFIG_ISAPC=n
+# CONFIG_I440FX=n
+# CONFIG_Q35=n
+# CONFIG_MICROVM=n

hw/i386/Kconfig

@@ -66,6 +66,8 @@ config PC_ACPI
 
 config I440FX
     bool
+    default y
+    depends on I386
     imply E1000_PCI
     imply VMPORT
     imply VMMOUSE
@@ -81,6 +83,8 @@ config I440FX
 
 config ISAPC
     bool
+    default y
+    depends on I386
     imply VGA_ISA
     select ISA_BUS
     select PC
@@ -91,6 +95,8 @@ config ISAPC
 
 config Q35
     bool
+    default y
+    depends on I386
     imply VTD
     imply AMD_IOMMU
     imply E1000E_PCI_EXPRESS
@@ -108,6 +114,8 @@ config Q35
 
 config MICROVM
     bool
+    default y
+    depends on I386
     select SERIAL_ISA # for serial_hds_isa_init()
     select ISA_BUS
     select APIC
@@ -142,4 +150,4 @@ config VMMOUSE
 config XEN_EMU
     bool
     default y
-    depends on KVM && (I386 || X86_64)
+    depends on KVM && I386

target/i386/Kconfig

@@ -5,3 +5,4 @@ config I386
 
 config X86_64
     bool
+    select I386