diff options
| author |  Martin Schwidefsky <schwidefsky@de.ibm.com>
| 2016-03-08 11:52:54 +0100 |
|---|---|---|
| committer |  Christian Borntraeger <borntraeger@de.ibm.com>
| 2016-06-20 09:46:48 +0200 |
| commit | 414d3b07496604a4372466a6b474ca24291a143c (patch) | |
| tree | 2d3a2610ec945377f27fc2b72744ac8511e1709d /arch/s390/mm | |
| parent | kvm: vmx: hook preemption timer support (diff) | |
| download | linux-414d3b07496604a4372466a6b474ca24291a143c.tar.gz linux-414d3b07496604a4372466a6b474ca24291a143c.tar.bz2 linux-414d3b07496604a4372466a6b474ca24291a143c.zip | |
s390/kvm: page table invalidation notifier
Pass an address range to the page table invalidation notifier
for KVM. This allows to notify changes that affect a larger
virtual memory area, e.g. for 1MB pages.
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/gmap.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index cace818d86eb..b5820bf47ec6 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -573,6 +573,21 @@ void gmap_unregister_ipte_notifier(struct gmap_notifier *nb) EXPORT_SYMBOL_GPL(gmap_unregister_ipte_notifier); /** + * gmap_call_notifier - call all registered invalidation callbacks + * @gmap: pointer to guest mapping meta data structure + * @start: start virtual address in the guest address space + * @end: end virtual address in the guest address space + */ +static void gmap_call_notifier(struct gmap *gmap, unsigned long start, + unsigned long end) +{ + struct gmap_notifier *nb; + + list_for_each_entry(nb, &gmap_notifier_list, list) + nb->notifier_call(gmap, start, end); +} + +/** * gmap_ipte_notify - mark a range of ptes for invalidation notification * @gmap: pointer to guest mapping meta data structure * @gaddr: virtual address in the guest address space @@ -643,7 +658,6 @@ void ptep_notify(struct mm_struct *mm, unsigned long vmaddr, pte_t *pte) { unsigned long offset, gaddr; unsigned long *table; - struct gmap_notifier *nb; struct gmap *gmap; offset = ((unsigned long) pte) & (255 * sizeof(pte_t)); @@ -655,8 +669,7 @@ void ptep_notify(struct mm_struct *mm, unsigned long vmaddr, pte_t *pte) if (!table) continue; gaddr = __gmap_segment_gaddr(table) + offset; - list_for_each_entry(nb, &gmap_notifier_list, list) - nb->notifier_call(gmap, gaddr); + gmap_call_notifier(gmap, gaddr, gaddr + PAGE_SIZE - 1); } spin_unlock(&gmap_notifier_lock); } |