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author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-01-26 14:10:58 +0100 |
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committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-01-26 14:11:10 +0100 |
commit | 6f457e1a149eb39ee58d51913e8023fc27c52806 (patch) | |
tree | d702ec38780667a3305e45df05c4f7df3730e9f6 /include/asm-s390/tlbflush.h | |
parent | [S390] sclp: convert channel path configure code to use sync interface. (diff) | |
download | linux-6f457e1a149eb39ee58d51913e8023fc27c52806.tar.xz linux-6f457e1a149eb39ee58d51913e8023fc27c52806.zip |
[S390] Fix tlb flushing with idte.
The clear-by-asce operation of the idte instruction gets an asce
(address-space-control-element) as argument to specify which TLBs
need to get flushed. The current code passes a plain pointer to
the start of the pgd without the additional bits which would make
the pointer an asce. The current machines don't mind the difference
but a future model might want to use the designation type control
bits in the asce as a filter for the TLBs to flush.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/tlbflush.h')
-rw-r--r-- | include/asm-s390/tlbflush.h | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-s390/tlbflush.h b/include/asm-s390/tlbflush.h index a69bd2490d52..a5e876539ec6 100644 --- a/include/asm-s390/tlbflush.h +++ b/include/asm-s390/tlbflush.h @@ -42,11 +42,11 @@ static inline void __tlb_flush_global(void) /* * Flush all tlb entries of a page table on all cpus. */ -static inline void __tlb_flush_idte(pgd_t *pgd) +static inline void __tlb_flush_idte(unsigned long asce) { asm volatile( " .insn rrf,0xb98e0000,0,%0,%1,0" - : : "a" (2048), "a" (__pa(pgd) & PAGE_MASK) : "cc" ); + : : "a" (2048), "a" (asce) : "cc" ); } static inline void __tlb_flush_mm(struct mm_struct * mm) @@ -61,11 +61,11 @@ static inline void __tlb_flush_mm(struct mm_struct * mm) * only ran on the local cpu. */ if (MACHINE_HAS_IDTE) { - pgd_t *shadow_pgd = get_shadow_table(mm->pgd); + pgd_t *shadow = get_shadow_table(mm->pgd); - if (shadow_pgd) - __tlb_flush_idte(shadow_pgd); - __tlb_flush_idte(mm->pgd); + if (shadow) + __tlb_flush_idte((unsigned long) shadow | mm->context); + __tlb_flush_idte((unsigned long) mm->pgd | mm->context); return; } preempt_disable(); |