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| author | Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2013-07-18 10:17:57 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-07-18 11:40:18 (GMT) |
| commit | 5a74953ff56aa870d6913ef4d81934f5c620c59d (patch) | |
| tree | a2c44eb3048e1ac09159ad5477d5afc79d135d8a | |
| parent | c9a7afa380ecaeb0fbeec2e82f86ec5548ad2963 (diff) | |
| download | linux-5a74953ff56aa870d6913ef4d81934f5c620c59d.tar.xz | |
s390/kdump: Disable mmap for s390
The kdump mmap patch series (git commit 83086978c63afd7c73e1c) directly
map the PT_LOADs to memory. On s390 this does not work because the
copy_from_oldmem() function swaps [0,crashkernel size] with
[crashkernel base, crashkernel base+crashkernel size]. The swap
int copy_from_oldmem() was done in order correctly implement /dev/oldmem.
See: http://marc.info/?l=kexec&m=136940802511603&w=2
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | fs/proc/vmcore.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 2850317..a1a16eb 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -223,7 +223,7 @@ static inline char *alloc_elfnotes_buf(size_t notes_sz) * regions in the 1st kernel pointed to by PT_LOAD entries) into * virtually contiguous user-space in ELF layout. */ -#ifdef CONFIG_MMU +#if defined(CONFIG_MMU) && !defined(CONFIG_S390) static int mmap_vmcore(struct file *file, struct vm_area_struct *vma) { size_t size = vma->vm_end - vma->vm_start; |