On Sat, 09 Feb 2008 15:40:12 -0700 Larry Finger <[EMAIL PROTECTED]> wrote:
> 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. it depends on what the code is trying to achieve. (this makes it not a trivial 1:1 scripted replacement ;-) Which attribute is the code trying to change? Is it trying to make a piece of code (non) cachable? or executable? You need to figure out what the intent is.. -- 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/
