Messages in this thread Patch in this message | | | From | Yinghai Lu <> | Subject | [PATCH] x86: introduce reserve_initrd | Date | Sun, 22 Jun 2008 02:46:58 -0700 |
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Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
--- arch/x86/kernel/setup_32.c | 16 ++++++++----- arch/x86/kernel/setup_64.c | 53 ++++++++++++++++++++++++--------------------- arch/x86/mm/init_32.c | 6 +---- include/asm-x86/setup.h | 2 + 4 files changed, 43 insertions(+), 34 deletions(-)
Index: linux-2.6/arch/x86/kernel/setup_32.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/setup_32.c +++ linux-2.6/arch/x86/kernel/setup_32.c @@ -337,7 +337,7 @@ void __init reserve_initrd(void) * in i386_start_kernel */ initrd_start = ramdisk_image + PAGE_OFFSET; - initrd_end = initrd_start+ramdisk_size; + initrd_end = initrd_start + ramdisk_size; return; } @@ -364,7 +364,7 @@ void __init reserve_initrd(void) #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) -static void __init relocate_initrd(void) +static void __init post_reserve_initrd(void) { u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; @@ -418,7 +418,13 @@ static void __init relocate_initrd(void) /* need to free that, otherwise init highmem will reserve it again */ free_early(ramdisk_image, ramdisk_image+ramdisk_size); } - +#else +void __init reserve_initrd(void) +{ +} +static void __init post_reserve_initrd(void) +{ +} #endif /* CONFIG_BLK_DEV_INITRD */ /* @@ -638,9 +644,7 @@ void __init setup_arch(char **cmdline_p) * NOTE: at this point the bootmem allocator is fully available. */ -#ifdef CONFIG_BLK_DEV_INITRD - relocate_initrd(); -#endif + post_reserve_initrd(); remapped_pgdat_init(); sparse_init(); Index: linux-2.6/arch/x86/kernel/setup_64.c =================================================================== --- linux-2.6.orig/arch/x86/kernel/setup_64.c +++ linux-2.6/arch/x86/kernel/setup_64.c @@ -154,6 +154,33 @@ static inline void copy_edd(void) } #endif +void __init reserve_initrd(void) +{ +#ifdef CONFIG_BLK_DEV_INITRD + if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { + unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; + unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; + unsigned long ramdisk_end = ramdisk_image + ramdisk_size; + unsigned long end_of_mem = end_pfn << PAGE_SHIFT; + + if (ramdisk_end <= end_of_mem) { + /* + * don't need to reserve again, already reserved early + * in x86_64_start_kernel, and early_res_to_bootmem + * will convert that to reserved in bootmem + */ + initrd_start = ramdisk_image + PAGE_OFFSET; + initrd_end = initrd_start+ramdisk_size; + } else { + free_early(ramdisk_image, ramdisk_end); + printk(KERN_ERR "initrd extends beyond end of memory " + "(0x%08lx > 0x%08lx)\ndisabling initrd\n", + ramdisk_end, end_of_mem); + initrd_start = 0; + } + } +#endif +} /* * setup_arch - architecture-specific boot-time initializations * @@ -251,6 +278,8 @@ void __init setup_arch(char **cmdline_p) end_pfn = e820_end_of_ram(); } + reserve_initrd(); + num_physpages = end_pfn; check_efer(); @@ -307,30 +336,6 @@ void __init setup_arch(char **cmdline_p) */ find_smp_config(); #endif -#ifdef CONFIG_BLK_DEV_INITRD - if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) { - unsigned long ramdisk_image = boot_params.hdr.ramdisk_image; - unsigned long ramdisk_size = boot_params.hdr.ramdisk_size; - unsigned long ramdisk_end = ramdisk_image + ramdisk_size; - unsigned long end_of_mem = end_pfn << PAGE_SHIFT; - - if (ramdisk_end <= end_of_mem) { - /* - * 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 { - free_bootmem(ramdisk_image, ramdisk_size); - printk(KERN_ERR "initrd extends beyond end of memory " - "(0x%08lx > 0x%08lx)\ndisabling initrd\n", - ramdisk_end, end_of_mem); - initrd_start = 0; - } - } -#endif reserve_crashkernel(); reserve_ibft_region(); Index: linux-2.6/arch/x86/mm/init_32.c =================================================================== --- linux-2.6.orig/arch/x86/mm/init_32.c +++ linux-2.6/arch/x86/mm/init_32.c @@ -597,8 +597,6 @@ void __init zone_sizes_init(void) } #endif /* !CONFIG_NEED_MULTIPLE_NODES */ -extern void reserve_initrd(void); - void __init setup_bootmem_allocator(void) { int i; @@ -613,9 +611,9 @@ 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"); -#ifdef CONFIG_BLK_DEV_INITRD + reserve_initrd(); -#endif + bootmap_size = init_bootmem(bootmap >> PAGE_SHIFT, max_low_pfn); printk(KERN_INFO " mapped low ram: 0 - %08lx\n", max_pfn_mapped<<PAGE_SHIFT); Index: linux-2.6/include/asm-x86/setup.h =================================================================== --- linux-2.6.orig/include/asm-x86/setup.h +++ linux-2.6/include/asm-x86/setup.h @@ -39,6 +39,8 @@ void reserve_crashkernel(void); #include <asm/bootparam.h> void reserve_standard_io_resources(void); +void reserve_initrd(void); + #ifndef _SETUP
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