Currently, all the new mappings will be read-write non-executable. Allow the
caller to use other permissions.
Signed-off-by: Julien Grall <julien.gr...@arm.com>
---
xen/arch/arm/mm.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c
index cd7bcf7aca..fe0646002e 100644
--- a/xen/arch/arm/mm.c
+++ b/xen/arch/arm/mm.c
@@ -1022,6 +1022,14 @@ 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);
+ if ( !pte.pt.ro && !pte.pt.xn )
+ {
+ printk("%s: Incorrect combination for addr=%lx\n",
+ __func__, addr);
+ return -EINVAL;
+ }
pte.pt.table = 1;
write_pte(entry, pte);
break;
--
2.11.0
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