From 8288a8286d00e074b765f1d47ee61159ed5291fd Mon Sep 17 00:00:00 2001 From: Joao Martins Date: Tue, 19 Jul 2022 18:00:11 +0100 Subject: i386/pc: factor out device_memory base/size to helper Move obtaining hole64_start from device_memory memory region base/size into an helper alongside correspondent getters in pc_memory_init() when the hotplug range is unitialized. While doing that remove the memory region based logic from this newly added helper. This is the final step that allows pc_pci_hole64_start() to be callable at the beginning of pc_memory_init() before any memory regions are initialized. Cc: Jonathan Cameron Signed-off-by: Joao Martins Acked-by: Igor Mammedov Message-Id: <20220719170014.27028-9-joao.m.martins@oracle.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/pc.c | 46 +++++++++++++++++++++++++++++++--------------- 1 file changed, 31 insertions(+), 15 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 611eb197da..ebc27e4cb7 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -825,15 +825,36 @@ static hwaddr pc_above_4g_end(PCMachineState *pcms) return x86ms->above_4g_mem_start + x86ms->above_4g_mem_size; } -static uint64_t pc_get_cxl_range_start(PCMachineState *pcms) +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; + + 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; + } + + *base = addr; + *device_mem_size = size; +} + +static uint64_t pc_get_cxl_range_start(PCMachineState *pcms) +{ + PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); hwaddr cxl_base; + ram_addr_t size; - if (pcmc->has_reserved_memory && machine->device_memory->base) { - cxl_base = machine->device_memory->base - + memory_region_size(&machine->device_memory->mr); + if (pcmc->has_reserved_memory) { + pc_get_device_memory_range(pcms, &cxl_base, &size); + cxl_base += size; } else { cxl_base = pc_above_4g_end(pcms); } @@ -920,7 +941,7 @@ void pc_memory_init(PCMachineState *pcms, /* initialize device memory address space */ if (pcmc->has_reserved_memory && (machine->ram_size < machine->maxram_size)) { - ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size; + ram_addr_t device_mem_size; if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) { error_report("unsupported amount of memory slots: %"PRIu64, @@ -935,13 +956,7 @@ void pc_memory_init(PCMachineState *pcms, exit(EXIT_FAILURE); } - machine->device_memory->base = - ROUND_UP(pc_above_4g_end(pcms), 1 * GiB); - - if (pcmc->enforce_aligned_dimm) { - /* size device region assuming 1G page max alignment per slot */ - device_mem_size += (1 * GiB) * machine->ram_slots; - } + pc_get_device_memory_range(pcms, &machine->device_memory->base, &device_mem_size); if ((machine->device_memory->base + device_mem_size) < device_mem_size) { @@ -1046,13 +1061,14 @@ uint64_t pc_pci_hole64_start(void) PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); MachineState *ms = MACHINE(pcms); uint64_t hole64_start = 0; + ram_addr_t size = 0; if (pcms->cxl_devices_state.is_enabled) { hole64_start = pc_get_cxl_range_end(pcms); - } else if (pcmc->has_reserved_memory && ms->device_memory->base) { - hole64_start = ms->device_memory->base; + } else if (pcmc->has_reserved_memory && (ms->ram_size < ms->maxram_size)) { + pc_get_device_memory_range(pcms, &hole64_start, &size); if (!pcmc->broken_reserved_end) { - hole64_start += memory_region_size(&ms->device_memory->mr); + hole64_start += size; } } else { hole64_start = pc_above_4g_end(pcms); -- cgit v1.2.3