search for: setpageforeign

...tempting to push >> the drivers upstream to Linux. > >What do you think of the followings? Too hacky? > > >extern struct address_space xen_ia64_foreign_dummy_mapping; >#define PageForeign(page) \ > (page->mapping == &xen_ia64_foreign_dummy_mapping) > >#define SetPageForeign(page, dtor) do { \ > set_page_private((page), (unsigned long)dtor); \ > (page)->mapping = &xen_ia64_foreign_dummy_mapping; \ >} while (0) > >#define ClearPageForeign(page) do { \ > (page)->mapping = NULL; \ > set_page_private((page), 0); \ >} while (0) > &g...

...gt;What do you think of the followings? Too hacky? >> > >> > >> >extern struct address_space xen_ia64_foreign_dummy_mapping; >> >#define PageForeign(page) \ >> > (page->mapping == &xen_ia64_foreign_dummy_mapping) >> > >> >#define SetPageForeign(page, dtor) do { \ >> > set_page_private((page), (unsigned long)dtor); \ >> > (page)->mapping = &xen_ia64_foreign_dummy_mapping; \ >> >} while (0) >> > >> >#define ClearPageForeign(page) do { \ >> > (page)->mapping = NULL; \ >&...

...1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index f225cb1..6c6f884 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -875,6 +875,7 @@ int gnttab_copy_grant_page(grant_ref_t ref, struct page **pagep) SetPageForeign(page, gnttab_page_free); ClearPageReserved(page); + page->private = 0UL; page->mapping = NULL; out: -- 1.5.6.5 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel

...)) { + struct mmuext_op op; + + kmap_flush_unused(); + op.cmd = MMUEXT_PIN_L1_TABLE; + op.arg1.mfn = pfn_to_mfn(page_to_pfn(pte)); + BUG_ON(HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF) < 0); + } #else pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT|__GFP_ZERO, 0); +#endif if (pte) { SetPageForeign(pte, pte_free); set_page_count(pte, 1); } -#endif return pte; } void pte_free(struct page *pte) { - unsigned long va = (unsigned long)__va(page_to_pfn(pte)<<PAGE_SHIFT); + unsigned long pfn = page_to_pfn(pte); - if (!pte_write(*virt_to_ptep(va))) - BUG_ON(HYPERVISOR_update_va_m...

Hi Keir: These two patches remove the need for netloop by performing the copying in netback and only if it is necessary. The rationale is that most packets will be processed without delay allowing them to be freed without copying at all. So instead of copying every packet destined to dom0 we''ll only copy those that linger longer than a specified amount of time (currently 0.5s). As it