acpi: reservation ... failed (what is for?)

[Andrey Chernov]

I got "reservation ... failed" messages with recent acpi. What they are 
for? Is the harmless? I notice no bad effects so far. See underlined ones 
in the output below. Motherboard: ASUS P5AD2-E Deluxe

ACPI APIC Table: <A M I  OEMAPIC >
FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
ACPI: RSDP @ 0x0xfaf60/0x0024 (v  2 ACPIAM)
ACPI: XSDT @ 0x0x3ffa0100/0x0044 (v  1 A M I  OEMXSDT  0x01000619 MSFT 0x00000097)
ACPI: FACP @ 0x0x3ffa0290/0x00F4 (v  3 A M I  OEMFACP  0x01000619 MSFT 0x00000097)
ACPI: DSDT @ 0x0x3ffa0400/0x68F4 (v  1  A0144 A0144000 0x00000000 INTL 0x02002026)
ACPI: FACS @ 0x0x3ffae000/0x0040
ACPI: APIC @ 0x0x3ffa0390/0x0070 (v  1 A M I  OEMAPIC  0x01000619 MSFT 0x00000097)
ACPI: OEMB @ 0x0x3ffae040/0x0046 (v  1 A M I  AMI_OEM  0x01000619 MSFT 0x00000097)
ACPI: MCFG @ 0x0x3ffa6d00/0x003C (v  1 A M I  OEMMCFG  0x01000619 MSFT 0x00000097)
ioapic0 <Version 2.0> irqs 0-23 on motherboard
cryptosoft0: <software crypto> on motherboard
acpi0: <A M I OEMXSDT> on motherboard
acpi0: [ITHREAD]
acpi0: Power Button (fixed)
acpi0: reservation of 0, a0000 (3) failed
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
acpi0: reservation of 100000, 3ff00000 (3) failed
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Timecounter "ACPI-fast" frequency 3579545 Hz quality 1000
acpi_timer0: <24-bit timer at 3.579545MHz> port 0x808-0x80b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0

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