Messages in this thread Patch in this message | | | From | Tang Chen <> | Subject | [PATCH v2 RESEND 07/18] x86, ACPI: Also initialize signature and length when parsing root table. | Date | Fri, 2 Aug 2013 17:14:26 +0800 |
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Besides the phys addr of the acpi tables, it will be very convenient if we also have the signature of each table in acpi_gbl_root_table_list at early time. We can find SRAT easily by comparing the signature.
This patch alse record signature and some other info in acpi_gbl_root_table_list at early time.
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Reviewed-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> --- drivers/acpi/acpica/tbutils.c | 22 ++++++++++++++++++++++ 1 files changed, 22 insertions(+), 0 deletions(-)
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index e3621cf..af942fe 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -438,6 +438,7 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address) u32 i; u32 table_count; struct acpi_table_header *table; + struct acpi_table_desc *table_desc; acpi_physical_address address; acpi_physical_address uninitialized_var(rsdt_address); u32 length; @@ -577,6 +578,27 @@ acpi_tb_parse_root_table(acpi_physical_address rsdp_address) */ acpi_os_unmap_memory(table, length); + /* + * Also initialize the table entries here, so that later we can use them + * to find SRAT at very eraly time to reserve hotpluggable memory. + */ + for (i = 2; i < acpi_gbl_root_table_list.current_table_count; i++) { + table = acpi_os_map_memory( + acpi_gbl_root_table_list.tables[i].address, + sizeof(struct acpi_table_header)); + if (!table) + return_ACPI_STATUS(AE_NO_MEMORY); + + table_desc = &acpi_gbl_root_table_list.tables[i]; + + table_desc->pointer = NULL; + table_desc->length = table->length; + table_desc->flags = ACPI_TABLE_ORIGIN_MAPPED; + ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); + + acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); + } + return_ACPI_STATUS(AE_OK); } -- 1.7.1
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