[Suspend2][ 8/9] [Suspend2] Get pageset1 load addresses.

[Nigel Cunningham <nigel@suspend2.net>]

Get the addresses into which the atomically copied memory should loaded
prior to restoring it. They need to be locations that won't be overwritten
in the process.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/pagedir.c |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/kernel/power/pagedir.c b/kernel/power/pagedir.c
index ec75e79..daf498a 100644
--- a/kernel/power/pagedir.c
+++ b/kernel/power/pagedir.c
@@ -308,3 +308,29 @@ void suspend_relocate_if_required(unsign
 	}
 }
 
+/* get_pageset1_load_addresses
+ * 
+ * Description: We check here that pagedir & pages it points to won't collide
+ * 		with pages where we're going to restore from the loaded pages
+ * 		later.
+ * Returns:	Zero on success, one if couldn't find enough pages (shouldn't
+ * 		happen).
+ */
+
+int suspend_get_pageset1_load_addresses(void)
+{
+	int i, result = 0;
+	void *this;
+
+	for(i=0; i < pagedir1.pageset_size; i++) {
+		this = (void *) suspend_get_nonconflicting_page();
+		if (!this) {
+			abort_suspend("Error: Ran out of memory seeking locations for reloading data.");
+			result = 1;
+			break;
+		}
+		SetPagePageset1Copy(virt_to_page(this));
+	}
+
+	return result;
+}

--
Nigel Cunningham		nigel at suspend2 dot net