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Date: Sat, 30 Oct 2010 10:56:32 +0200 From: Marco Stornelli <marco.stornelli@...il.com> To: Linux Kernel <linux-kernel@...r.kernel.org> CC: x86@...nel.org, andi@...stfloor.org, Tim Bird <tim.bird@...sony.com>, tglx@...utronix.de Subject: [PATCH] archs: add Kconfig symbol for set memory ro feature From: Marco Stornelli <marco.stornelli@...il.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@...il.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 -- 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/
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