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    SubjectRe: [PATCH V3] x86: NX protection for kernel data
    On Fri, Sep 4, 2009 at 9:13 AM, Siarhei Liakh<> 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
    > <> and Xuxian Jiang <>.
    > 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. :)

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      Last update: 2009-09-04 11:41    [W:0.044 / U:5.376 seconds]
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