[PATCH part3 0/5] acpi, acpica: Initialize acpi_gbl_root_table_list earlier and override it later.

[Tang Chen]

In order to prevent bootmem allocator (memblock) from allocating hotpluggable 
memory for the kernel, we need to obtain SRAT earlier.

In part1 patch-set, we have split acpi_gbl_root_table_list initialization into
two steps: install and override.

This patch-set will do install step earlier. This will help us to find SRAT provided 
by firmware earlier in later patches. 

The current kernel looks like this:

setup_arch()
 |->acpi_initrd_override()         /* Find all tables specified by users in initrd,
 |                                    and store them in acpi_tables_addr array. */
 |......
 |->acpi_boot_table_init()         /* Find all tables in firmware and install them
                                      into acpi_gbl_root_table_list. Check acpi_tables_addr,
                                      if any table needs to be overrided, override it. */

After this patch-set, the kernel will look like this:

setup_arch()
 |->early_acpi_boot_table_init()   /* Find all tables in firmware and install them 
 |                                    into acpi_gbl_root_table_list. No override. */
 |
 |->acpi_initrd_override()         /* Find all tables specified by users in initrd,
 |                                    and store them in acpi_tables_addr array. */
 |......
 |->acpi_boot_table_init()         /* Check acpi_tables_addr, if any table needs to 
                                      be overrided, override it. */


Tang Chen (5):
  x86, acpi: Call two new functions instead of acpi_initialize_tables()
    in acpi_table_init().
  x86, acpi: Split acpi_table_init() into two parts.
  x86, acpi: Rename check_multiple_madt() and make it global.
  x86, acpi: Split acpi_boot_table_init() into two parts.
  x86, acpi: Initialize acpi golbal root table list earlier.

 arch/x86/kernel/acpi/boot.c |   32 ++++++++++++++++++++------------
 arch/x86/kernel/setup.c     |    8 +++++++-
 drivers/acpi/tables.c       |   29 +++++++++++++++++++++++------
 include/acpi/acpixf.h       |    4 ++++
 include/linux/acpi.h        |    4 ++++
 5 files changed, 58 insertions(+), 19 deletions(-)

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