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x86, kdump: Remove crashkernel range find limit for 64bit

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Now kexeced kernel/ramdisk could be above 4g, so remove 896 limit for
64bit.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1359058816-7615-30-git-send-email-yinghai@kernel.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Yinghai Lu 2013-01-24 12:20:10 -08:00 committed by H. Peter Anvin
parent 595ad9af85
commit 7d41a8a4a2
1 changed files with 1 additions and 3 deletions
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4
arch/x86/kernel/setup.c
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@ -501,13 +501,11 @@ static void __init memblock_x86_reserve_range_setup_data(void)
/*
* Keep the crash kernel below this limit. On 32 bits earlier kernels
* would limit the kernel to the low 512 MiB due to mapping restrictions.
* On 64 bits, kexec-tools currently limits us to 896 MiB; increase this
* limit once kexec-tools are fixed.
*/
#ifdef CONFIG_X86_32
# define CRASH_KERNEL_ADDR_MAX (512 << 20)
#else
# define CRASH_KERNEL_ADDR_MAX (896 << 20)
# define CRASH_KERNEL_ADDR_MAX MAXMEM
#endif
static void __init reserve_crashkernel(void)