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| author | Randy Dunlap <randy.dunlap@oracle.com> | 2011-05-20 20:10:04 +0400 |
|---|---|---|
| committer | Randy Dunlap <randy.dunlap@oracle.com> | 2011-05-20 20:10:04 +0400 |
| commit | 2f3e4af471e38e0658e701973238ae4b5e50fcd6 (patch) | |
| tree | fbfc99c0d975e38ff80f4ff3239a9fc0567b8a4d /arch/s390/include/asm | |
| parent | 61516587513c84ac26e68e3ab008dc6e965d0378 (diff) | |
| parent | d410fa4ef99112386de5f218dd7df7b4fca910b4 (diff) | |
| download | linux-2f3e4af471e38e0658e701973238ae4b5e50fcd6.tar.xz | |
Merge branch 'docs-security' into docs-move
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/diag.h | 17 | ||||
| -rw-r--r-- | arch/s390/include/asm/mmu_context.h | 2 |
2 files changed, 16 insertions, 3 deletions
diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h index 72b2e2f2d32d..7e91c58072e2 100644 --- a/arch/s390/include/asm/diag.h +++ b/arch/s390/include/asm/diag.h @@ -9,9 +9,22 @@ #define _ASM_S390_DIAG_H /* - * Diagnose 10: Release pages + * Diagnose 10: Release page range */ -extern void diag10(unsigned long addr); +static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn) +{ + unsigned long start_addr, end_addr; + + start_addr = start_pfn << PAGE_SHIFT; + end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT; + + asm volatile( + "0: diag %0,%1,0x10\n" + "1:\n" + EX_TABLE(0b, 1b) + EX_TABLE(1b, 1b) + : : "a" (start_addr), "a" (end_addr)); +} /* * Diagnose 14: Input spool file manipulation diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h index a6f0e7cc9cde..8c277caa8d3a 100644 --- a/arch/s390/include/asm/mmu_context.h +++ b/arch/s390/include/asm/mmu_context.h @@ -23,7 +23,7 @@ static inline int init_new_context(struct task_struct *tsk, #ifdef CONFIG_64BIT mm->context.asce_bits |= _ASCE_TYPE_REGION3; #endif - if (current->mm->context.alloc_pgste) { + if (current->mm && current->mm->context.alloc_pgste) { /* * alloc_pgste indicates, that any NEW context will be created * with extended page tables. The old context is unchanged. The |