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Subject[PATCH 21/37] x86: make 32bit support NO_BOOTMEM
let's make 32bit consistent with 64bit

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/Kconfig | 1 -
arch/x86/kernel/early_res.c | 3 +++
arch/x86/mm/init_32.c | 6 ++++++
arch/x86/mm/numa_32.c | 3 +++
4 files changed, 12 insertions(+), 1 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 80a2a10..90467c9 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -571,7 +571,6 @@ config PARAVIRT_DEBUG
config NO_BOOTMEM
default y
bool "Disable Bootmem code"
- depends on X86_64
---help---
use early_res directly instead of bootmem before slab is ready.

diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index 52804e9..38a0c61 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -354,6 +354,9 @@ int __init get_free_all_memory_range(struct range **rangep, int nodeid)

/* need to go over early_node_map to find out good range for node */
nr_range = add_from_early_node_map(range, count, nr_range, nodeid);
+#ifdef CONFIG_X86_32
+ subtract_range(range, count, max_low_pfn, -1UL);
+#endif
subtract_early_res(range, count);
nr_range = clean_sort_range(range, count);

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 2dccde0..262867a 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -748,6 +748,7 @@ static void __init zone_sizes_init(void)
free_area_init_nodes(max_zone_pfns);
}

+#ifndef CONFIG_NO_BOOTMEM
static unsigned long __init setup_node_bootmem(int nodeid,
unsigned long start_pfn,
unsigned long end_pfn,
@@ -767,9 +768,11 @@ static unsigned long __init setup_node_bootmem(int nodeid,

return bootmap + bootmap_size;
}
+#endif

void __init setup_bootmem_allocator(void)
{
+#ifndef CONFIG_NO_BOOTMEM
int nodeid;
unsigned long bootmap_size, bootmap;
/*
@@ -781,11 +784,13 @@ void __init setup_bootmem_allocator(void)
if (bootmap == -1L)
panic("Cannot find bootmem map of size %ld\n", bootmap_size);
reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
+#endif

printk(KERN_INFO " mapped low ram: 0 - %08lx\n",
max_pfn_mapped<<PAGE_SHIFT);
printk(KERN_INFO " low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);

+#ifndef CONFIG_NO_BOOTMEM
for_each_online_node(nodeid) {
unsigned long start_pfn, end_pfn;

@@ -803,6 +808,7 @@ void __init setup_bootmem_allocator(void)
bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
bootmap);
}
+#endif

after_bootmem = 1;
}
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index b20760c..809baaa 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -418,7 +418,10 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,

for_each_online_node(nid) {
memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+ NODE_DATA(nid)->node_id = nid;
+#ifndef CONFIG_NO_BOOTMEM
NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
+#endif
}

setup_bootmem_allocator();
--
1.6.4.2


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