x86: extend e820 early_res support 32bit -fix #5
reserve early numa kva, so it will not clash with new RAMDISK
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index de9c5ee..6f40cb5 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -614,7 +614,6 @@
*/
find_smp_config();
#endif
- numa_kva_reserve();
reserve_crashkernel();
reserve_ibft_region();
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index 4774972..55fdbab 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -357,6 +357,11 @@
printk("kva_start_pfn ~ %ld find_max_low_pfn() ~ %ld\n",
kva_start_pfn, max_low_pfn);
printk("max_pfn = %ld\n", max_pfn);
+
+ /* avoid clash with initrd */
+ reserve_early(kva_start_pfn<<PAGE_SHIFT,
+ (kva_start_pfn + kva_pages)<<PAGE_SHIFT,
+ "KVA PG");
#ifdef CONFIG_HIGHMEM
highstart_pfn = highend_pfn = max_pfn;
if (max_pfn > system_max_low_pfn)
@@ -392,13 +397,6 @@
return max_low_pfn;
}
-void __init numa_kva_reserve(void)
-{
- if (kva_pages)
- reserve_bootmem(PFN_PHYS(kva_start_pfn), PFN_PHYS(kva_pages),
- BOOTMEM_DEFAULT);
-}
-
void __init zone_sizes_init(void)
{
int nid;
diff --git a/include/asm-x86/mmzone_32.h b/include/asm-x86/mmzone_32.h
index cb2cad0..faef751 100644
--- a/include/asm-x86/mmzone_32.h
+++ b/include/asm-x86/mmzone_32.h
@@ -38,16 +38,12 @@
}
extern int early_pfn_to_nid(unsigned long pfn);
-extern void numa_kva_reserve(void);
#else /* !CONFIG_NUMA */
#define get_memcfg_numa get_memcfg_numa_flat
#define get_zholes_size(n) (0)
-static inline void numa_kva_reserve(void)
-{
-}
#endif /* CONFIG_NUMA */
#ifdef CONFIG_DISCONTIGMEM