PCMachineClass::enforce_aligned_dimm was only used by the
pc-i440fx-2.1 machine, which got removed. It is now always
true. Remove it, simplifying pc_get_device_memory_range().
Update the comment in Avocado test_phybits_low_pse36().
Reviewed-by: Zhao Liu <zhao1....@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
include/hw/i386/pc.h | 3 ---
hw/i386/pc.c | 14 +++-----------
tests/avocado/mem-addr-space-check.py | 9 ++++-----
3 files changed, 7 insertions(+), 19 deletions(-)
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index c2d9af36b2..231aae92ed 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -74,8 +74,6 @@ typedef struct PCMachineState {
*
* Compat fields:
*
- * @enforce_aligned_dimm: check that DIMM's address/size is aligned by
- * backend's alignment value if provided
* @acpi_data_size: Size of the chunk of memory at the top of RAM
* for the BIOS ACPI tables and other BIOS
* datastructures.
@@ -114,7 +112,6 @@ struct PCMachineClass {
/* RAM / address space compat: */
bool gigabyte_align;
bool has_reserved_memory;
- bool enforce_aligned_dimm;
bool broken_reserved_end;
bool enforce_amd_1tb_hole;
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 2bf1bfd5b2..c7bfdfc1e1 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -716,7 +716,6 @@ static void pc_get_device_memory_range(PCMachineState *pcms,
hwaddr *base,
ram_addr_t *device_mem_size)
{
- PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
MachineState *machine = MACHINE(pcms);
ram_addr_t size;
hwaddr addr;
@@ -724,10 +723,8 @@ static void pc_get_device_memory_range(PCMachineState
*pcms,
size = machine->maxram_size - machine->ram_size;
addr = ROUND_UP(pc_above_4g_end(pcms), 1 * GiB);
- if (pcmc->enforce_aligned_dimm) {
- /* size device region assuming 1G page max alignment per slot */
- size += (1 * GiB) * machine->ram_slots;
- }
+ /* size device region assuming 1G page max alignment per slot */
+ size += (1 * GiB) * machine->ram_slots;
*base = addr;
*device_mem_size = size;
@@ -1285,12 +1282,9 @@ void pc_i8259_create(ISABus *isa_bus, qemu_irq
*i8259_irqs)
static void pc_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
- const PCMachineState *pcms = PC_MACHINE(hotplug_dev);
const X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
- const PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
const MachineState *ms = MACHINE(hotplug_dev);
const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
- const uint64_t legacy_align = TARGET_PAGE_SIZE;
Error *local_err = NULL;
/*
@@ -1315,8 +1309,7 @@ static void pc_memory_pre_plug(HotplugHandler
*hotplug_dev, DeviceState *dev,
return;
}
- pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev),
- pcmc->enforce_aligned_dimm ? NULL : &legacy_align, errp);
+ pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), NULL, errp);
}
static void pc_memory_plug(HotplugHandler *hotplug_dev,
@@ -1780,7 +1773,6 @@ static void pc_machine_class_init(ObjectClass *oc, void
*data)
pcmc->smbios_defaults = true;
pcmc->gigabyte_align = true;
pcmc->has_reserved_memory = true;
- pcmc->enforce_aligned_dimm = true;
pcmc->enforce_amd_1tb_hole = true;
/* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported
* to be used at the moment, 32K should be enough for a while. */
diff --git a/tests/avocado/mem-addr-space-check.py
b/tests/avocado/mem-addr-space-check.py
index af019969c0..85541ea051 100644
--- a/tests/avocado/mem-addr-space-check.py
+++ b/tests/avocado/mem-addr-space-check.py
@@ -31,11 +31,10 @@ def test_phybits_low_pse36(self):
at 4 GiB boundary when "above_4g_mem_size" is 0 (this would be true
when
we have 0.5 GiB of VM memory, see pc_q35_init()). This means total
hotpluggable memory size is 60 GiB. Per slot, we reserve 1 GiB of
memory
- for dimm alignment for all newer machines (see enforce_aligned_dimm
- property for pc machines and pc_get_device_memory_range()). That leaves
- total hotpluggable actual memory size of 59 GiB. If the VM is started
- with 0.5 GiB of memory, maxmem should be set to a maximum value of
- 59.5 GiB to ensure that the processor can address all memory directly.
+ for dimm alignment for all machines. That leaves total hotpluggable
+ actual memory size of 59 GiB. If the VM is started with 0.5 GiB of
+ memory, maxmem should be set to a maximum value of 59.5 GiB to ensure
+ that the processor can address all memory directly.
Note that 64-bit pci hole size is 0 in this case. If maxmem is set to
59.6G, QEMU should fail to start with a message "phy-bits are too low".
If maxmem is set to 59.5G with all other QEMU parameters identical,
QEMU
--
2.41.0
