The MachineClass::fixup_ram_size callback, which was added
in commit 5c30ef937f5 ("vl/s390x: fixup ram sizes for compat
machines"), was only used by the s390-ccw-virtio-4.2 machine,
which got removed. Remove it as now unused.

Reported-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/hw/boards.h | 7 -------
 hw/core/machine.c   | 3 ---
 2 files changed, 10 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 665b6201214..d0a69cd490b 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -250,12 +250,6 @@ typedef struct {
  *    It also will be used as a way to option into "-m" option support.
  *    If it's not set by board, '-m' will be ignored and generic code will
  *    not create default RAM MemoryRegion.
- * @fixup_ram_size:
- *    Amends user provided ram size (with -m option) using machine
- *    specific algorithm. To be used by old machine types for compat
- *    purposes only.
- *    Applies only to default memory backend, i.e., explicit memory backend
- *    wasn't used.
  * @smbios_memory_device_size:
  *    Default size of memory device,
  *    SMBIOS 3.1.0 "7.18 Memory Device (Type 17)"
@@ -325,7 +319,6 @@ struct MachineClass {
                                                          unsigned cpu_index);
     const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
     int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx);
-    ram_addr_t (*fixup_ram_size)(ram_addr_t size);
     uint64_t smbios_memory_device_size;
     bool (*create_default_memdev)(MachineState *ms, const char *path,
                                   Error **errp);
diff --git a/hw/core/machine.c b/hw/core/machine.c
index 681adbb7ac5..7aec3916e80 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -648,9 +648,6 @@ static void machine_set_mem(Object *obj, Visitor *v, const char *name,
         mem->size = mc->default_ram_size;
     }
     mem->size = QEMU_ALIGN_UP(mem->size, 8192);
-    if (mc->fixup_ram_size) {
-        mem->size = mc->fixup_ram_size(mem->size);
-    }
     if ((ram_addr_t)mem->size != mem->size) {
         error_setg(errp, "ram size %llu exceeds permitted maximum %llu",
                    (unsigned long long)mem->size,
-- 
2.51.0

On 20/10/2025 11.49, Philippe Mathieu-Daudé wrote:
> The MachineClass::fixup_ram_size callback, which was added
> in commit 5c30ef937f5 ("vl/s390x: fixup ram sizes for compat
> machines"), was only used by the s390-ccw-virtio-4.2 machine,
> which got removed. Remove it as now unused.
> 
> Reported-by: Thomas Huth <thuth@redhat.com>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>   include/hw/boards.h | 7 -------
>   hw/core/machine.c   | 3 ---
>   2 files changed, 10 deletions(-)

Reviewed-by: Thomas Huth <thuth@redhat.com>