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-rw-r--r--arch/s390/kernel/vdso.c10
1 files changed, 2 insertions, 8 deletions
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index d95427e32a5..ea5590fdca3 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -241,17 +241,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
241 * on the "data" page of the vDSO or you'll stop getting kernel 241 * on the "data" page of the vDSO or you'll stop getting kernel
242 * updates and your nice userland gettimeofday will be totally dead. 242 * updates and your nice userland gettimeofday will be totally dead.
243 * It's fine to use that for setting breakpoints in the vDSO code 243 * It's fine to use that for setting breakpoints in the vDSO code
244 * pages though 244 * pages though.
245 *
246 * Make sure the vDSO gets into every core dump.
247 * Dumping its contents makes post-mortem fully interpretable later
248 * without matching up the same kernel and hardware config to see
249 * what PC values meant.
250 */ 245 */
251 rc = install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT, 246 rc = install_special_mapping(mm, vdso_base, vdso_pages << PAGE_SHIFT,
252 VM_READ|VM_EXEC| 247 VM_READ|VM_EXEC|
253 VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC| 248 VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
254 VM_ALWAYSDUMP,
255 vdso_pagelist); 249 vdso_pagelist);
256 if (rc) 250 if (rc)
257 current->mm->context.vdso_base = 0; 251 current->mm->context.vdso_base = 0;