On Saturday 24 March 2012 02:05:18 Yinghai Lu wrote: > On Fri, Mar 23, 2012 at 1:54 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote: > > On Fri, Mar 23, 2012 at 7:29 AM, Thomas Renninger <trenn@xxxxxxx> wrote: > >> Details can be found in: > >> Documentation/acpi/initrd_table_override.txt > >> > >> Additional dmesg output of a booted system with > >> FACP (FADT), DSDT and SSDT (the 9th dynamically loaded one) > >> tables overridden (with ### marked comments): > >> > >> ### ACPI tables found glued to initrd > >> DSDT ACPI table found in initrd - size: 16234 > >> FACP ACPI table found in initrd - size: 116 > >> SSDT ACPI table found in initrd - size: 334 > >> ### Re-printed e820 map via e820_update() with additionally created > >> ### ACPI data section at 0xcff55000 where the ACPI tables passed via > >> ### initrd where copied to > >> modified physical RAM map: > >> ... > >> ### New ACPI data section: > >> modified: 00000000cff55000 - 00000000cff5912c (ACPI data) > >> ### BIOS e820 provided ACPI data section: > >> modified: 00000000cff60000 - 00000000cff69000 (ACPI data) > >> ... > >> ### Total size of all ACPI tables glued to initrd > >> ### The address is initrd_start which gets updated to > >> ### initrd_start = initrd_start + "size of all ACPI tables glued to initrd" > >> Found acpi tables of size: 16684 at 0xffff8800374c4000 > >> > >> Disabling lock debugging due to kernel taint > >> ### initrd provided FACP and DSDT tables are used instead of BIOS provided ones > >> ACPI: FACP @ 0x00000000cff68dd8 Phys table override, replaced with: > >> ACPI: FACP 00000000cff58f6a 00074 (v01 INTEL TUMWATER 06040000 PTL 00000003) > >> ACPI: DSDT @ 0x00000000cff649d4 Phys table override, replaced with: > >> ACPI: DSDT 00000000cff55000 04404 (v01 Intel BLAKFORD 06040000 MSFT 0100000E) > >> ... > >> ### Much later, the 9th (/sys/firmware/acpi/table/dynamic/SSDT9) dynamically > >> ### loaded ACPI table matches and gets overridden: > >> ACPI: SSDT @ 0x00000000cff64824 Phys table override, replaced with: > >> ACPI: SSDT 00000000cff58fde 0014E (v01 PmRef Cpu7Ist 00003000 INTL 20110316) > >> ACPI: Dynamic OEM Table Load: > >> ACPI: SSDT (null) 0014E (v01 PmRef Cpu7Ist 00003000 INTL 20110316) > >> ... > >> > >> If the initrd does not start with a valid ACPI table signature or the ACPI > >> table's checksum is wrong, there is no functional change. > > updated it a little bit to remove 2 #ifdef. please check attached. Plus getting rid of the e820 stuff in drivers/acpi/osl.c Thanks, nice cleanups. Thomas -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
