diff options
| author | Yinghai Lu <yinghai@kernel.org> | 2009-06-05 06:14:22 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-06-12 02:19:13 +0400 |
| commit | 8c5dd8f43367f4f266dd616f11658005bc2d20ef (patch) | |
| tree | 331d4e75f41cdc8acee8c3d9eedee8b3e41a1608 /arch/x86 | |
| parent | 512626a04e72aca60effe111fa0333ed0b195d21 (diff) | |
| download | linux-8c5dd8f43367f4f266dd616f11658005bc2d20ef.tar.xz | |
x86: handle initrd that extends into unusable memory
On a system where system memory (according e820) is not covered by
mtrr, mtrr_trim_memory converts a portion of memory to reserved, but
bootloader has already put the initrd in that range.
Thus, we need to have 64bit to use relocate_initrd too.
[ Impact: fix using initrd when mtrr_trim_memory happen ]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: stable@kernel.org
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/setup.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index d1c636bf31a7..be5ae80f897f 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -301,15 +301,13 @@ static void __init reserve_brk(void) #ifdef CONFIG_BLK_DEV_INITRD -#ifdef CONFIG_X86_32 - #define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT) static void __init relocate_initrd(void) { u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; - u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; + u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; u64 ramdisk_here; unsigned long slop, clen, mapaddr; char *p, *q; @@ -365,14 +363,13 @@ static void __init relocate_initrd(void) ramdisk_image, ramdisk_image + ramdisk_size - 1, ramdisk_here, ramdisk_here + ramdisk_size - 1); } -#endif static void __init reserve_initrd(void) { u64 ramdisk_image = boot_params.hdr.ramdisk_image; u64 ramdisk_size = boot_params.hdr.ramdisk_size; u64 ramdisk_end = ramdisk_image + ramdisk_size; - u64 end_of_lowmem = max_low_pfn << PAGE_SHIFT; + u64 end_of_lowmem = max_low_pfn_mapped << PAGE_SHIFT; if (!boot_params.hdr.type_of_loader || !ramdisk_image || !ramdisk_size) @@ -402,14 +399,8 @@ static void __init reserve_initrd(void) return; } -#ifdef CONFIG_X86_32 relocate_initrd(); -#else - printk(KERN_ERR "initrd extends beyond end of memory " - "(0x%08llx > 0x%08llx)\ndisabling initrd\n", - ramdisk_end, end_of_lowmem); - initrd_start = 0; -#endif + free_early(ramdisk_image, ramdisk_end); } #else |