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author | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-02-28 09:45:47 +0100 |
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committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-06-19 12:40:49 +0200 |
commit | 516871f0023858c73772ac9705a42d1b2906c8cc (patch) | |
tree | 3ae3e392607a23c34e42bf2bba50e4bcffb621a2 | |
parent | 9adf35f04b5d4c4c3074e1b0018eabff5c0cc741 (diff) | |
download | qemu-516871f0023858c73772ac9705a42d1b2906c8cc.zip qemu-516871f0023858c73772ac9705a42d1b2906c8cc.tar.gz qemu-516871f0023858c73772ac9705a42d1b2906c8cc.tar.bz2 |
hw/i386/pc: Remove PCMachineClass::enforce_aligned_dimm
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.liu@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20240617071118.60464-14-philmd@linaro.org>
-rw-r--r-- | hw/i386/pc.c | 14 | ||||
-rw-r--r-- | include/hw/i386/pc.h | 3 | ||||
-rw-r--r-- | tests/avocado/mem-addr-space-check.py | 9 |
3 files changed, 7 insertions, 19 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 215462e..ff5683a 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -728,7 +728,6 @@ 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; @@ -736,10 +735,8 @@ 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; @@ -1303,12 +1300,9 @@ 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; /* @@ -1333,8 +1327,7 @@ 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, @@ -1798,7 +1791,6 @@ 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; pcmc->isa_bios_alias = true; /* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 5667b87..ca72f8c 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; bool isa_bios_alias; diff --git a/tests/avocado/mem-addr-space-check.py b/tests/avocado/mem-addr-space-check.py index af01996..85541ea 100644 --- a/tests/avocado/mem-addr-space-check.py +++ b/tests/avocado/mem-addr-space-check.py @@ -31,11 +31,10 @@ class MemAddrCheck(QemuSystemTest): 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 |