The compat mode code also needs adjustment to deal with the changed
return value from gnttab_copy().
Signed-off-by: Jan Beulich <jbeul...@suse.com>
--- a/xen/common/compat/grant_table.c
+++ b/xen/common/compat/grant_table.c
@@ -258,9 +258,9 @@ int compat_grant_table_op(unsigned int c
rc = gnttab_copy(guest_handle_cast(nat.uop, gnttab_copy_t), n);
if ( rc > 0 )
{
- ASSERT(rc < n);
- i -= n - rc;
- n = rc;
+ ASSERT(rc <= n);
+ i -= rc;
+ n -= rc;
}
if ( rc >= 0 )
{
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