[feat] set phys-virt-offset as 0xffff_8000_0000_0000 for x86_64 qemu

modules/axhal/src/platform/x86_pc/multiboot.S

@@ -123,9 +123,10 @@ ap_entry64:
 .Ltmp_pml4:
     # 0x0000_0000 ~ 0xffff_ffff
     .quad .Ltmp_pdpt_low - {offset} + 0x3   # PRESENT | WRITABLE | paddr(tmp_pdpt)
-    .zero 8 * 510
-    # 0xffff_ff80_0000_0000 ~ 0xffff_ff80_ffff_ffff
+    .zero 8 * 255
+    # 0xffff_8000_0000_0000 ~ 0xffff_8000_ffff_ffff
     .quad .Ltmp_pdpt_high - {offset} + 0x3  # PRESENT | WRITABLE | paddr(tmp_pdpt)
+    .zero 8 * 255
 
 # FIXME: may not work on macOS using hvf as the CPU does not support 1GB page (pdpe1gb)
 .Ltmp_pdpt_low:

platforms/x86_64-qemu-q35.toml

@@ -12,24 +12,26 @@ phys-memory-size = "0x800_0000"     # 128M
 # Base physical address of the kernel image.
 kernel-base-paddr = "0x20_0000"
 # Base virtual address of the kernel image.
-kernel-base-vaddr = "0xffff_ff80_0020_0000"
+kernel-base-vaddr = "0xffff_8000_0020_0000"
 # Linear mapping offset, for quick conversions between physical and virtual
 # addresses.
-phys-virt-offset = "0xffff_ff80_0000_0000"
+phys-virt-offset = "0xffff_8000_0000_0000"
 # Offset of bus address and phys address. some boards, the bus address is
 # different from the physical address.
 phys-bus-offset = "0"
 # Kernel address space base.
-kernel-aspace-base = "0xffff_ff80_0000_0000"
+kernel-aspace-base = "0xffff_8000_0000_0000"
 # Kernel address space size.
-kernel-aspace-size = "0x0000_007f_ffff_f000"
+kernel-aspace-size = "0x0000_7fff_ffff_f000"
 # MMIO regions with format (`base_paddr`, `size`).
 mmio-regions = [
     ["0xb000_0000", "0x1000_0000"], # PCI config space
     ["0xfe00_0000", "0xc0_0000"],   # PCI devices
     ["0xfec0_0000", "0x1000"],      # IO APIC
     ["0xfed0_0000", "0x1000"],      # HPET
     ["0xfee0_0000", "0x1000"],      # Local APIC
+    ["0xc000000000", "0x4000"],     # PCI devices
+    ["0x380000000000", "0x4000"]    # PCI devices
 ]
 # VirtIO MMIO regions with format (`base_paddr`, `size`).
 virtio-mmio-regions = []