diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-01-21 16:37:27 +0100 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-01-21 16:37:27 +0100 |
commit | 77835492ed489c0b870f82f4c50687bd267acc0a (patch) | |
tree | d80903ce1b8dd30aa44ccfc756616ad4d6c74d63 /arch/powerpc/kernel/machine_kexec.c | |
parent | af37501c792107c2bde1524bdae38d9a247b841a (diff) | |
parent | 1de9e8e70f5acc441550ca75433563d91b269bbe (diff) |
Merge commit 'v2.6.29-rc2' into perfcounters/core
Conflicts:
include/linux/syscalls.h
Diffstat (limited to 'arch/powerpc/kernel/machine_kexec.c')
-rw-r--r-- | arch/powerpc/kernel/machine_kexec.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/machine_kexec.c b/arch/powerpc/kernel/machine_kexec.c index b3abebb7ee6..d59e2b1bdcb 100644 --- a/arch/powerpc/kernel/machine_kexec.c +++ b/arch/powerpc/kernel/machine_kexec.c @@ -93,10 +93,35 @@ void __init reserve_crashkernel(void) KDUMP_KERNELBASE); crashk_res.start = KDUMP_KERNELBASE; +#else + if (!crashk_res.start) { + /* + * unspecified address, choose a region of specified size + * can overlap with initrd (ignoring corruption when retained) + * ppc64 requires kernel and some stacks to be in first segemnt + */ + crashk_res.start = KDUMP_KERNELBASE; + } + + crash_base = PAGE_ALIGN(crashk_res.start); + if (crash_base != crashk_res.start) { + printk("Crash kernel base must be aligned to 0x%lx\n", + PAGE_SIZE); + crashk_res.start = crash_base; + } + #endif crash_size = PAGE_ALIGN(crash_size); crashk_res.end = crashk_res.start + crash_size - 1; + /* The crash region must not overlap the current kernel */ + if (overlaps_crashkernel(__pa(_stext), _end - _stext)) { + printk(KERN_WARNING + "Crash kernel can not overlap current kernel\n"); + crashk_res.start = crashk_res.end = 0; + return; + } + /* Crash kernel trumps memory limit */ if (memory_limit && memory_limit <= crashk_res.end) { memory_limit = crashk_res.end + 1; |