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Subject[PATCH v5 1/4] x86/boot: Wrap up the SRAT traversing code into subtable_parse()
Date
From: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>

Wrap up the SRAT traversing code into subtable_parse().

Reviewed-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
---
arch/x86/boot/compressed/acpi.c | 21 ++++++++++++++-------
1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/arch/x86/boot/compressed/acpi.c b/arch/x86/boot/compressed/acpi.c
index 25019d42ae93..a0f81438a0fd 100644
--- a/arch/x86/boot/compressed/acpi.c
+++ b/arch/x86/boot/compressed/acpi.c
@@ -362,6 +362,19 @@ static unsigned long get_acpi_srat_table(void)
return 0;
}

+static void subtable_parse(struct acpi_subtable_header *sub_table, int *num)
+{
+ struct acpi_srat_mem_affinity *ma;
+
+ ma = (struct acpi_srat_mem_affinity *)sub_table;
+
+ if (!(ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && ma->length) {
+ immovable_mem[*num].start = ma->base_address;
+ immovable_mem[*num].size = ma->length;
+ (*num)++;
+ }
+}
+
/**
* count_immovable_mem_regions - Parse SRAT and cache the immovable
* memory regions into the immovable_mem array.
@@ -395,14 +408,8 @@ int count_immovable_mem_regions(void)
while (table + sizeof(struct acpi_subtable_header) < table_end) {
sub_table = (struct acpi_subtable_header *)table;
if (sub_table->type == ACPI_SRAT_TYPE_MEMORY_AFFINITY) {
- struct acpi_srat_mem_affinity *ma;

- ma = (struct acpi_srat_mem_affinity *)sub_table;
- if (!(ma->flags & ACPI_SRAT_MEM_HOT_PLUGGABLE) && ma->length) {
- immovable_mem[num].start = ma->base_address;
- immovable_mem[num].size = ma->length;
- num++;
- }
+ subtable_parse(sub_table, &num);

if (num >= MAX_NUMNODES*2) {
debug_putstr("Too many immovable memory regions, aborting.\n");
--
2.20.1
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