Messages in this thread |  | | | Date | Wed, 22 Aug 2007 09:11:29 +0900 | | From | KAMEZAWA Hiroyuki <> | | Subject | Re: [PATCH][2.6.23-rc2-mm2] small fix for ia64 icache sync patch |
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On Tue, 21 Aug 2007 14:12:02 -0700 "Luck, Tony" <tony.luck@intel.com> wrote:
> > + if (pte_present(pteval) &&// swap out ? > > + pte_exec(pteval) && // flush only new executable page. > > pte_user(pteval) && // ignore kernel page > > (!pte_present(*ptep) ||// do_no_page or swap in, migration, > > pte_pfn(*ptep) != pte_pfn(pteval))) // do_wp_page(), page copy > > David Mosberger was concerned about the increase in code > size from this inline function. We can reduce the bloat > a bit by defining a macro that tests for "present && > executable && user-mode" in one go: > > #define pte_pux(pte) ((pte_val(pte) & (_PAGE_P|_PAGE_PL_MASK|_PAGE_AR_RX)) == \ > (_PAGE_P|_PAGE_PL_3|_PAGE_AR_RX)) > Hmm, ok.
> Perhaps there is a better name than "pte_pux"? I don't know whether > the code that this generates is faster, but it is smaller (bloat > is only 3k instead of 4k). > > One last cleanup needed ... don't use C-99/C++ style comments. > ok.
-Kame
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