diff mbox

pc: Add a comment explaining why pc_compat_2_4() doesn't exist

Message ID 1443463641-15822-1-git-send-email-ehabkost@redhat.com
State New
Headers show

Commit Message

Eduardo Habkost Sept. 28, 2015, 6:07 p.m. UTC 
pc_compat_2_4() doesn't exist, and we shouldn't create one. Add a
comment explaining why the function doesn't exist and why pc_compat_*()
functions are deprecated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/i386/pc_piix.c | 7 +++++++
 hw/i386/pc_q35.c  | 7 +++++++
 2 files changed, 14 insertions(+)
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Patch

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 3ffb05f..52fdd55 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -301,6 +301,13 @@  static void pc_init1(MachineState *machine,
     }
 }
 
+/* Looking for a pc_compat_2_4() function? It doesn't exist.
+ * pc_compat_*() functions that run on machine-init time and
+ * change global QEMU state are deprecated. Please don't create
+ * one, and implement any pc-*-2.4 (and newer) compat code in
+ * HW_COMPAT_*, PC_COMPAT_*, or * pc_*_machine_options().
+ */
+
 static void pc_compat_2_3(MachineState *machine)
 {
     PCMachineState *pcms = PC_MACHINE(machine);
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 1b7d3b6..837e430 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -284,6 +284,13 @@  static void pc_q35_init(MachineState *machine)
     }
 }
 
+/* Looking for a pc_compat_2_4() function? It doesn't exist.
+ * pc_compat_*() functions that run on machine-init time and
+ * change global QEMU state are deprecated. Please don't create
+ * one, and implement any pc-*-2.4 (and newer) compat code in
+ * HW_COMPAT_*, PC_COMPAT_*, or * pc_*_machine_options().
+ */
+
 static void pc_compat_2_3(MachineState *machine)
 {
     PCMachineState *pcms = PC_MACHINE(machine);