From 414d3b07496604a4372466a6b474ca24291a143c Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Tue, 8 Mar 2016 11:52:54 +0100 Subject: 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 Signed-off-by: Martin Schwidefsky Signed-off-by: Christian Borntraeger --- arch/s390/mm/gmap.c | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'arch/s390/mm') 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 @@ -572,6 +572,21 @@ 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 @@ -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); } -- cgit v1.2.3