From 6b88beed40c756aaff018d286f4de31351240a93 Mon Sep 17 00:00:00 2001 From: Julien Grall Date: Mon, 9 Oct 2017 14:23:40 +0100 Subject: [PATCH] xen/arm: mm: Handle permission flags when adding a new mapping Currently, all the new mappings will be read-write non-executable. Allow the caller to use other permissions. Signed-off-by: Julien Grall Reviewed-by: Stefano Stabellini --- xen/arch/arm/mm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index c1dad61a20..2329ccee83 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -1022,6 +1022,9 @@ static int create_xen_entries(enum xenmap_operation op, if ( op == RESERVE ) break; pte = mfn_to_xen_entry(mfn, PAGE_AI_MASK(flags)); + pte.pt.ro = PAGE_RO_MASK(flags); + pte.pt.xn = PAGE_XN_MASK(flags); + BUG_ON(!pte.pt.ro && !pte.pt.xn); pte.pt.table = 1; write_pte(entry, pte); break; -- 2.30.2