On Sat, 09 Feb 2008 15:40:12 -0700 Larry Finger <[EMAIL PROTECTED]> wrote:
> Is the set_pages_* API that replaces change_page_attr described > somewhere? I have been unable to find it with Google. > > I'm trying to modify the VirtualBox kernel module to work with > 2.6.24-git (and 2.6.25) on x86_64 architecture. The current code has > a value of the third argument of the call (prot) with 3 variants. All > variations have the following bits set: _PAGE_PRESENT, _PAGE_RW, > _PAGE_DIRTY, and _PAGE_ACCESSED. Number 2 adds _PAGE_NX to the above, > and number 3 adds _PAGE_GLOBAL to the bits in variation 1. > > From the code in arch/x86/mm/pageattr.c, I figured I need to call > set_pages_wb() unconditionally, and set_pages_nx() if _PAGE_NX is > set. Will these calls be sufficient? I thought about calling > set_pages_rw(), but that entry is not exported. > ok looking at the actual code.. it seems to only care about making a piece of memory executable (and then clearing it before freeing), so all you need is set_memory_x() and set_memory_nx() -- If you want to reach me at my work email, use [EMAIL PROTECTED] For development, discussion and tips for power savings, visit http://www.lesswatts.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/