我想访问BSD中的物理内存。 acpidump -t XSDT > xsdt_dump.asl它给：
/* RSD PTR: OEM=ALASKA, ACPI_Rev=2.0x (2) XSDT=0x9aae8070, length=36, cksum=164 */ /* XSDT: Length=92, Revision=1, Checksum=244, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI, Creator Revision=0x10013 Entries={ 0x9aaee2d8, 0x9aaee3d0, 0x9aaee458, 0x9aaee4a0, 0x9aaee560, 0x9aaee668, 0x9aaee6a8 } */ /* FACP: Length=244, Revision=4, Checksum=153, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI, Creator Revision=0x10013 FACS=0x9b2f9f80, DSDT=0x9aae8158 INT_MODEL=APIC Preferred_PM_Profile=Workstation (3) SCI_INT=9 SMI_CMD=0xb2, ACPI_ENABLE=0xa0, ACPI_DISABLE=0xa1, S4BIOS_REQ=0x0 PSTATE_CNT=0x0 PM1a_EVT_BLK=0x400-0x403 PM1a_CNT_BLK=0x404-0x405 PM2_CNT_BLK=0x450-0x450 PM_TMR_BLK=0x408-0x40b GPE0_BLK=0x420-0x42f P_LVL2_LAT=101 us, P_LVL3_LAT=1001 us FLUSH_SIZE=1024, FLUSH_STRIDE=16 DUTY_OFFSET=1, DUTY_WIDTH=3 DAY_ALRM=13, MON_ALRM=0, CENTURY=50 IAPC_BOOT_ARCH={LEGACY_DEVICES} Flags={WBINVD,C1_SUPPORTED,SLEEP_BUTTON,S4_RTC_WAKE,RESET_REGISTER,PLATFORM_CLOCK,S4_RTC_VALID,REMOTE_POWER_ON} RESET_REG=0xcf9:0[8] (IO), RESET_VALUE=0x6 */ /* FACS: Length=64, HwSig=0x00000000, Firm_Wake_Vec=0x00000000 Global_Lock= Flags= Version=2 */ /* DSDT: Length=24957, Revision=2, Checksum=249, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x400, Creator ID=INTL, Creator Revision=0x20051117 */ /* APIC: Length=132, Revision=3, Checksum=217, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI, Creator Revision=0x10013 Local APIC ADDR=0xfee00000 Flags={PC-AT} Type=Local APIC ACPI CPU=0 Flags={ENABLED} APIC ID=0 Type=Local APIC ACPI CPU=2 Flags={ENABLED} APIC ID=4 Type=Local APIC ACPI CPU=1 Flags={ENABLED} APIC ID=1 Type=Local APIC ACPI CPU=3 Flags={ENABLED} APIC ID=5 Type=IO APIC APIC ID=0 INT BASE=0 ADDR=0x00000000fec00000 Type=INT Override BUS=0 IRQ=0 INTR=2 Flags={Polarity=conforming, Trigger=conforming} Type=INT Override BUS=0 IRQ=9 INTR=9 Flags={Polarity=active-hi, Trigger=level} Type=Local APIC NMI ACPI CPU=0 LINT Pin=1 Flags={Polarity=active-hi, Trigger=edge} Type=Local APIC NMI ACPI CPU=2 LINT Pin=1 Flags={Polarity=active-hi, Trigger=edge} Type=Local APIC NMI ACPI CPU=1 LINT Pin=1 Flags={Polarity=active-hi, Trigger=edge} Type=Local APIC NMI ACPI CPU=3 LINT Pin=1 Flags={Polarity=active-hi, Trigger=edge} */ /* FPDT: Length=68, Revision=1, Checksum=154, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI, Creator Revision=0x10013 */ /* FIDT: Length=192, Revision=1, Checksum=222, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI, Creator Revision=0x10013 */ /* SSDT: Length=258, Revision=1, Checksum=239, OEMID=AMICPU, OEM Table ID=PROC, OEM Revision=0x1, Creator ID=MSFT, Creator Revision=0x3000001 */ /* MCFG: Length=60, Revision=1, Checksum=155, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=MSFT, Creator Revision=0x97 Base Address=0x00000000e0000000 Segment Group=0x0000 Start Bus=0 End Bus=63 */ /* HPET: Length=56, Revision=1, Checksum=144, OEMID=ALASKA, OEM Table ID=H55HC, OEM Revision=0x1072009, Creator ID=AMI., Creator Revision=0x5 HPET Number=0 ADDR=0xfed00000:0[64] (Memory) HW Rev=0x1 Comparators=7 Counter Size=1 Legacy IRQ routing capable={TRUE} PCI Vendor ID=0x8086 Minimal Tick=14318 */
在RSD PTR表中，什么是XSDT = 0x9aae8070？ 这是一个XSDT表的地址，或者我需要添加一些其他地址从内存访问XSDT表？