[Xen-devel] [PATCH 4/5] mm: Don't request scrubbing until dom0 is running

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

There is no need to scrub pages freed during dom0 construction
since heap will be scrubbed once dom0 is ready (by scrub_heap_pages()).

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
---
Changes in v2:
* Removed '#ifdef CONFIG_SCRUB_DEBUG'

 xen/common/page_alloc.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/xen/common/page_alloc.c b/xen/common/page_alloc.c
index 3db77c5..6c08983 100644
--- a/xen/common/page_alloc.c
+++ b/xen/common/page_alloc.c
@@ -2247,16 +2247,12 @@ void free_domheap_pages(struct page_info *pg, unsigned 
int order)
 
             spin_unlock_recursive(&d->page_alloc_lock);
 
-#ifndef CONFIG_SCRUB_DEBUG
             /*
              * Normally we expect a domain to clear pages before freeing them,
              * if it cares about the secrecy of their contents. However, after
              * a domain has died we assume responsibility for erasure.
              */
-            scrub = !!d->is_dying;
-#else
-            scrub = true;
-#endif
+            scrub = !!d->is_dying | scrub_debug;
         }
         else
         {
-- 
1.8.3.1


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