Messages in this thread | | | Date | Fri, 4 Sep 2009 17:37:42 +0800 | Subject | Re: [PATCH V3] x86: NX protection for kernel data | From | Américo Wang <> |
| |
On Fri, Sep 4, 2009 at 9:13 AM, Siarhei Liakh<sliakh.lkml@gmail.com> wrote: > This patch expands functionality of CONFIG_DEBUG_RODATA to set main > (static) kernel data area as NX. > The following steps are taken to achieve this: > 1. Linker script is adjusted so .text always starts and ends on a page boundary > 2. Linker script is adjusted so .rodata and .data always start and > end on a page boundary > 3. void mark_nxdata_nx(void) added to arch/x86/mm/init.c with actual > functionality: NX is set for all pages from _etext through _end. > 4. mark_nxdata_nx() called from free_initmem() (after init has been released) > 5. free_init_pages() sets released memory NX in arch/x86/mm/init.c > > The patch have been developed for Linux 2.6.31-rc7 x86 by Siarhei Liakh > <sliakh.lkml@gmail.com> and Xuxian Jiang <jiang@cs.ncsu.edu>. > > V1: initial patch for 2.6.30 > V2: patch for 2.6.31-rc7 > V3: moved all code into arch/x86, adjusted credits
Looks fine, but I don't think it is necessary to bother "CREDITS", because now we have git. :)
Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |