linux-kernel - [POC 02/12] init/main.c: call update_rai

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 18 Oct 2018 00:33:22 +0200
From:   Rasmus Villemoes <linux@...musvillemoes.dk>
To:     linux-kernel@...r.kernel.org
Cc:     x86@...nel.org, "H . Peter Anvin" <hpa@...or.com>,
        Ingo Molnar <mingo@...nel.org>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [POC 02/12] init/main.c: call update_rai_access()

I hope that one can actually interchange the order of these calls a bit
so that they read

	mark_readonly();
	update_rai_access();
	free_initmem();

because there will be some metadata associated to each rai_* macro
invocation that might as well live in __initdata. But for now, we will
live with that wasted space.

Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
 init/main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/init/main.c b/init/main.c
index a664246450d1..39709ca33316 100644
--- a/init/main.c
+++ b/init/main.c
@@ -92,6 +92,7 @@
 #include <linux/rodata_test.h>
 #include <linux/jump_label.h>
 #include <linux/mem_encrypt.h>
+#include <linux/rai.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -1066,6 +1067,7 @@ static int __ref kernel_init(void *unused)
 	ftrace_free_init_mem();
 	free_initmem();
 	mark_readonly();
+	update_rai_access();
 
 	/*
 	 * Kernel mappings are now finalized - update the userspace page-table
-- 
2.19.1.6.gbde171bbf5