linux-kernel - [RFC PATCH 1/2] asm-generic: io: Add exec versions of ioremap

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:	Wed, 26 Nov 2014 15:14:00 -0600
From:	Dave Gerlach <d-gerlach@...com>
To:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arch@...r.kernel.org>, <devicetree@...r.kernel.org>
CC:	Russ Dill <russ.dill@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Arnd Bergmann <arnd@...db.de>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Shawn Guo <shawn.guo@...escale.com>,
	Tony Lindgren <tony@...mide.com>, <Anson.Huang@...escale.com>,
	Russ Dill <Russ.Dill@...com>, Dave Gerlach <d-gerlach@...com>
Subject: [RFC PATCH 1/2] asm-generic: io: Add exec versions of ioremap

From: Russ Dill <Russ.Dill@...com>

If code is to be copied into and area (such as SRAM) and run,
it needs to be marked as exec. Currently only an ARM version
of this exists.

Signed-off-by: Russ Dill <Russ.Dill@...com>
Signed-off-by: Dave Gerlach <d-gerlach@...com>
---
 arch/arm/include/asm/io.h   | 2 ++
 include/asm-generic/iomap.h | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 1805674..1d99d42 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -344,6 +344,8 @@ extern void _memset_io(volatile void __iomem *, int, size_t);
 #define ioremap_nocache(cookie,size)	__arm_ioremap((cookie), (size), MT_DEVICE)
 #define ioremap_cache(cookie,size)	__arm_ioremap((cookie), (size), MT_DEVICE_CACHED)
 #define ioremap_wc(cookie,size)		__arm_ioremap((cookie), (size), MT_DEVICE_WC)
+#define ioremap_exec(cookie,size)	__arm_ioremap_exec((cookie), (size), true)
+#define ioremap_exec_nocache(cookie,size) __arm_ioremap_exec((cookie), (size), false)
 #define iounmap				__arm_iounmap
 
 /*
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index 1b41011..6648ff3 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -66,6 +66,11 @@ extern void ioport_unmap(void __iomem *);
 #define ioremap_wc ioremap_nocache
 #endif
 
+#ifndef ARCH_HAS_IOREMAP_EXEC
+#define ioremap_exec ioremap
+#define ioremap_exec_nocache ioremap_nocache
+#endif
+
 #ifdef CONFIG_PCI
 /* Destroy a virtual mapping cookie for a PCI BAR (memory or IO) */
 struct pci_dev;
-- 
2.1.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/