From: Yinghai Lu <yinghai@kernel.org>
To: Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: [PATCH] x86: make 64 bit to use relocate_initrd too
Date: Thu, 04 Jun 2009 19:14:22 -0700 [thread overview]
Message-ID: <4A287F7E.1000402@kernel.org> (raw)
found one system memory (according e820) is not covered by mtrr.
mtrr_trim_memory converts portion memory to reserved.
but bootloader put the initrd in that range already.
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>
---
arch/x86/kernel/setup.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
Index: linux-2.6/arch/x86/kernel/setup.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup.c
+++ linux-2.6/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
reply other threads:[~2009-06-05 2:14 UTC|newest]
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