x86: cleanup after making various page table manipulation operations preemptible

This drops the "preemptible" parameters from various functions where
now they can't (or shouldn't, validated by assertions) be run in non-
preemptible mode anymore, to prove that manipulations of at least L3
and L4 page tables and page table entries are now always preemptible,
i.e. the earlier patches actually fulfill their purpose of fixing the
resulting security issue.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Tim Deegan <tim@xen.org>

1 files changed, 2 insertions, 7 deletions

diff --git a/xen/include/asm-x86/mm.h b/xen/include/asm-x86/mm.h
index 7a9273702a..6b367c0fee 100644
--- a/xen/include/asm-x86/mm.h
+++ b/xen/include/asm-x86/mm.h
@@ -364,15 +364,10 @@ static inline void put_page_and_type(struct page_info *page)
     put_page(page);
 }
 
-static inline int put_page_and_type_preemptible(struct page_info *page,
-                                                int preemptible)
+static inline int put_page_and_type_preemptible(struct page_info *page)
 {
-    int rc = 0;
+    int rc = put_page_type_preemptible(page);
 
-    if ( preemptible )
-        rc = put_page_type_preemptible(page);
-    else
-        put_page_type(page);
     if ( likely(rc == 0) )
         put_page(page);
     return rc;