All of lore.kernel.org
 help / color / mirror / Atom feed
From: Marco Stornelli <marco.stornelli@gmail.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, andi@firstfloor.org,
	Tim Bird <tim.bird@am.sony.com>,
	tglx@linutronix.de
Subject: [PATCH] archs: add Kconfig symbol for set memory ro feature
Date: Sat, 30 Oct 2010 10:56:32 +0200	[thread overview]
Message-ID: <4CCBDDC0.8040502@gmail.com> (raw)

From: Marco Stornelli <marco.stornelli@gmail.com>

This patch adds a new Kconfig symbol to recognize which arch implements a couple of functions set_memory_ro/set_memory_rw. These functions sets/unsets read-only flag at page table entry level. Until now only x86
has got these functions. Next target will be arm and powerpc.

Signed-off-by: Marco Stornelli <marco.stornelli@gmail.com>
---

--- linux-2.6.36-orig/arch/Kconfig	2010-09-13 01:07:37.000000000 +0200
+++ linux-2.6.36/arch/Kconfig	2010-10-30 10:27:16.000000000 +0200
@@ -83,6 +83,9 @@ config USER_RETURN_NOTIFIER
 config HAVE_IOREMAP_PROT
 	bool
 
+config HAVE_SET_MEMORY_RO
+	bool
+
 config HAVE_KPROBES
 	bool
 
--- linux-2.6.36-orig/arch/x86/Kconfig	2010-09-13 01:07:37.000000000 +0200
+++ linux-2.6.36/arch/x86/Kconfig	2010-10-30 10:27:38.000000000 +0200
@@ -26,6 +26,7 @@ config X86
 	select HAVE_OPROFILE
 	select HAVE_PERF_EVENTS if (!M386 && !M486)
 	select HAVE_IOREMAP_PROT
+	select HAVE_SET_MEMORY_RO
 	select HAVE_KPROBES
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select ARCH_WANT_FRAME_POINTERS


             reply	other threads:[~2010-10-30  8:59 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-10-30  8:56 Marco Stornelli [this message]
2010-11-03  7:54 ` [PATCH] archs: add Kconfig symbol for set memory ro feature Marco Stornelli

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=4CCBDDC0.8040502@gmail.com \
    --to=marco.stornelli@gmail.com \
    --cc=andi@firstfloor.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=tglx@linutronix.de \
    --cc=tim.bird@am.sony.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.