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Subject[PATCH 26/35] x86: add find_fw_memmap_area
so could move early_res up

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
---
arch/x86/include/asm/early_res.h | 1 +
arch/x86/kernel/e820.c | 4 ++++
arch/x86/kernel/early_res.c | 17 +++++++++++------
3 files changed, 16 insertions(+), 6 deletions(-)
diff --git a/arch/x86/include/asm/early_res.h b/arch/x86/include/asm/early_res.h
index 5a4d2eb..9758f3d 100644
--- a/arch/x86/include/asm/early_res.h
+++ b/arch/x86/include/asm/early_res.h
@@ -12,6 +12,7 @@ u64 find_early_area(u64 ei_start, u64 ei_last, u64 start, u64 end,
u64 size, u64 align);
u64 find_early_area_size(u64 ei_start, u64 ei_last, u64 start,
u64 *sizep, u64 align);
+u64 find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align);
#include <linux/range.h>
int get_free_all_memory_range(struct range **rangep, int nodeid);

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index b4e512b..36918d8 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -748,6 +748,10 @@ u64 __init find_e820_area(u64 start, u64 end, u64 size, u64 align)
return -1ULL;
}

+u64 __init find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align)
+{
+ return find_e820_area(start, end, size, align);
+}
/*
* Find next free range after *start
*/
diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index c8be692..e1d8be1 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -7,16 +7,14 @@
#include <linux/bootmem.h>
#include <linux/mm.h>

-#include <asm/e820.h>
#include <asm/early_res.h>
-#include <asm/proto.h>

/*
* Early reserved memory areas.
*/
/*
* need to make sure this one is bigger enough before
- * find_e820_area could be used
+ * find_fw_memmap_area could be used
*/
#define MAX_EARLY_RES_X 32

@@ -180,6 +178,13 @@ void __init reserve_early_overlap_ok(u64 start, u64 end, char *name)
__reserve_early(start, end, name, 1);
}

+u64 __init __weak find_fw_memmap_area(u64 start, u64 end, u64 size, u64 align)
+{
+ panic("should have find_fw_memmap_area defined with arch");
+
+ return -1ULL;
+}
+
static void __init __check_and_double_early_res(u64 ex_start, u64 ex_end)
{
u64 start, end, size, mem;
@@ -198,13 +203,13 @@ static void __init __check_and_double_early_res(u64 ex_start, u64 ex_end)
start = early_res[0].end;
end = ex_start;
if (start + size < end)
- mem = find_e820_area(start, end, size,
+ mem = find_fw_memmap_area(start, end, size,
sizeof(struct early_res));
if (mem == -1ULL) {
start = ex_end;
end = max_pfn_mapped << PAGE_SHIFT;
if (start + size < end)
- mem = find_e820_area(start, end, size,
+ mem = find_fw_memmap_area(start, end, size,
sizeof(struct early_res));
}
if (mem == -1ULL)
@@ -343,7 +348,7 @@ int __init get_free_all_memory_range(struct range **rangep, int nodeid)
start = MAX_DMA32_PFN << PAGE_SHIFT;
#endif
end = max_pfn_mapped << PAGE_SHIFT;
- mem = find_e820_area(start, end, size, sizeof(struct range));
+ mem = find_fw_memmap_area(start, end, size, sizeof(struct range));
if (mem == -1ULL)
panic("can not find more space for range free");

--
1.6.4.2


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