The patch titled
Subject: x86: use generic early mem copy
has been added to the -mm tree. Its filename is
x86-use-generic-early-mem-copy.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-use-generic-early-mem-copy.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-use-generic-early-mem-copy.patch
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------------------------------------------------------
From: Mark Salter <msalter@xxxxxxxxxx>
Subject: x86: use generic early mem copy
The early_ioremap library now has a generic copy_from_early_mem()
function. Use the generic copy function for x86 relocate_initrd().
Signed-off-by: Mark Salter <msalter@xxxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Will Deacon <will.deacon@xxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Russell King <rmk@xxxxxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/setup.c | 21 +--------------------
1 file changed, 1 insertion(+), 20 deletions(-)
diff -puN arch/x86/kernel/setup.c~x86-use-generic-early-mem-copy arch/x86/kernel/setup.c
--- a/arch/x86/kernel/setup.c~x86-use-generic-early-mem-copy
+++ a/arch/x86/kernel/setup.c
@@ -324,8 +324,6 @@ static void __init relocate_initrd(void)
u64 ramdisk_image = get_ramdisk_image();
u64 ramdisk_size = get_ramdisk_size();
u64 area_size = PAGE_ALIGN(ramdisk_size);
- unsigned long slop, clen, mapaddr;
- char *p, *q;
/* We need to move the initrd down into directly mapped mem */
relocated_ramdisk = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
@@ -343,25 +341,8 @@ static void __init relocate_initrd(void)
printk(KERN_INFO "Allocated new RAMDISK: [mem %#010llx-%#010llx]\n",
relocated_ramdisk, relocated_ramdisk + ramdisk_size - 1);
- q = (char *)initrd_start;
+ copy_from_early_mem((void *)initrd_start, ramdisk_image, ramdisk_size);
- /* Copy the initrd */
- while (ramdisk_size) {
- slop = ramdisk_image & ~PAGE_MASK;
- clen = ramdisk_size;
- if (clen > MAX_MAP_CHUNK-slop)
- clen = MAX_MAP_CHUNK-slop;
- mapaddr = ramdisk_image & PAGE_MASK;
- p = early_memremap(mapaddr, clen+slop);
- memcpy(q, p+slop, clen);
- early_memunmap(p, clen+slop);
- q += clen;
- ramdisk_image += clen;
- ramdisk_size -= clen;
- }
-
- ramdisk_image = get_ramdisk_image();
- ramdisk_size = get_ramdisk_size();
printk(KERN_INFO "Move RAMDISK from [mem %#010llx-%#010llx] to"
" [mem %#010llx-%#010llx]\n",
ramdisk_image, ramdisk_image + ramdisk_size - 1,
_
Patches currently in -mm which might be from msalter@xxxxxxxxxx are
mm-add-utility-for-early-copy-from-unmapped-ram.patch
arm64-support-initrd-outside-kernel-linear-map.patch
x86-use-generic-early-mem-copy.patch
linux-next.patch
mm-mpx-add-vm_flags_t-vm_flags-arg-to-do_mmap_pgoff-fix.patch
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