From: Keir Fraser <keir.fraser@citrix.com>
Date: Mon, 5 Jan 2009 11:55:24 +0000 (+0000)
Subject: x86: Poison initmem at end of Xen bootstrap
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14019^2~7
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=c5e9f7aa3a7c36f7649f15a2c94a3ffd310c5bc5;p=xen.git

x86: Poison initmem at end of Xen bootstrap

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/xen/arch/x86/setup.c b/xen/arch/x86/setup.c
index c8639d35f3..051b542ce3 100644
--- a/xen/arch/x86/setup.c
+++ b/xen/arch/x86/setup.c
@@ -386,6 +386,7 @@ void init_done(void)
     extern char __init_begin[], __init_end[];
 
     /* Free (or page-protect) the init areas. */
+    memset(__init_begin, 0xcc, __init_end - __init_begin); /* int3 poison */
 #ifndef MEMORY_GUARD
     init_xenheap_pages(__pa(__init_begin), __pa(__init_end));
 #endif