x86_64: do not reserve ramdisk two times

ramdisk is reserved via reserve_early in x86_64_start_kernel,
later early_res_to_bootmem() will convert to reservation in bootmem.

so don't need to reserve that again.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index d6d54faa84dfb1020ea838896a2aca8ee18bda06..993c767732564afe285e7ddc23228511108b7b11 100644 (file)
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -146,6 +146,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
 
        reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");
 
+#ifdef CONFIG_BLK_DEV_INITRD
        /* Reserve INITRD */
        if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
                unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
@@ -153,6 +154,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
                unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
                reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
        }
+#endif
 
        reserve_ebda_region();
 

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index 674ef3510cdfd66972a08f716e374a0d96884dea..0aa291bff4e05b60604c86409074f665fd985a97 100644 (file)
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -420,11 +420,14 @@ void __init setup_arch(char **cmdline_p)
                unsigned long end_of_mem    = end_pfn << PAGE_SHIFT;
 
                if (ramdisk_end <= end_of_mem) {
-                       reserve_bootmem_generic(ramdisk_image, ramdisk_size);
+                       /*
+                        * don't need to reserve again, already reserved early
+                        * in x86_64_start_kernel, and early_res_to_bootmem
+                        * convert that to reserved in bootmem
+                        */
                        initrd_start = ramdisk_image + PAGE_OFFSET;
                        initrd_end = initrd_start+ramdisk_size;
                } else {
-                       /* Assumes everything on node 0 */
                        free_bootmem(ramdisk_image, ramdisk_size);
                        printk(KERN_ERR "initrd extends beyond end of memory "
                               "(0x%08lx > 0x%08lx)\ndisabling initrd\n",