Re: [PATCH 00/23] KAISER: unmap most of the kernel from userspace page tables

[Randy Dunlap]

On 11/01/2017 10:31 AM, Dave Hansen wrote:

(from attachment)

diff --git a/arch/x86/mm/kaiser.c b/arch/x86/mm/kaiser.c
index 57f7637..cde9014 100644
--- a/arch/x86/mm/kaiser.c
+++ b/arch/x86/mm/kaiser.c
@@ -49,9 +49,21 @@
 static DEFINE_SPINLOCK(shadow_table_allocation_lock);
 
 /*
+ * This is a generic page table walker used only for walking kernel
+ * addresses.  We use it too help recreate the "shadow" page tables

                          to help 

+ * which are used while we are in userspace.
+ *



-- 
~Randy