search for: pgt_count_mask

...are looking only for read-only mappings of p.t. pages. */ ASSERT((l1e_get_flags(pte) & (_PAGE_RW|_PAGE_PRESENT)) == _PAGE_PRESENT); + ASSERT(mfn_valid(mfn)); ASSERT((page->u.inuse.type_info & PGT_type_mask) == PGT_l1_page_table); ASSERT((page->u.inuse.type_info & PGT_count_mask) != 0); ASSERT(page_get_owner(page) == d); /* Check the new PTE. */ nl1e = l1e_from_intpte(val); - if ( unlikely(!get_page_from_l1e(gl1e_to_ml1e(d, nl1e), d)) ) + if ( unlikely(!get_page_from_l1e(nl1e, d)) ) { if ( (CONFIG_PAGING_LEVELS >= 3) && is_pv...

Hello! I have a slight problem in my guest port with the WP bit in CR0. The original kernel maps certain kernel pages to user-mode read-only and relies on the kernel being able to modify these despite the read-only bit being set in the pages. This in turn requires that the WP bit is unset in CR0. Unfortunately, Xen doesn''t allow the WP bit to be zeroed because Xen wants to share pages

...ype count also needs to be zero in this case, but e.g. ++ * PGT_seg_desc_page may still have PGT_validated set, which we need to ++ * clear before transferring ownership (as validation criteria vary ++ * depending on domain type). ++ */ ++ BUG_ON(page->u.inuse.type_info & (PGT_count_mask | PGT_locked | ++ PGT_pinned)); ++ page->u.inuse.type_info = 0; ++ + /* Swizzle the owner then reinstate the PGC_allocated reference. */ + page_set_owner(page, NULL); + y = page->count_info; diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/t...

Moritz Muehlenhoff writes ("Re: Xen package security updates for jessie 4.4, XSA-213, XSA-214"): > On Thu, May 04, 2017 at 05:06:07PM +0100, Ian Jackson wrote: > > I have fixed these in stretch but the jessie package remains unfixed. > > I think I may be able to find some backports somewhere. Would that be > > useful ? Is anyone else working on this ? > >

Hi, --- background ---------------------------------------------------- * what the makedumpfile is: To shorten the size of the dumpfile and the time of creating the dumpfile, makedumpfile copies only the necessary pages for analysis to the dumpfile from /proc/vmcore. You can specify the kind of unnecessary pages with dump_level. If you want to shorten the size further, enable the

2011/7/19 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: > CC''ing Tim and xen-devel > > On Mon, 18 Jul 2011, Jiageng Yu wrote: >> 2011/7/16 Stefano Stabellini <stefano.stabellini@eu.citrix.com>: >> > On Fri, 15 Jul 2011, Jiageng Yu wrote: >> >> 2011/7/15 Jiageng Yu <yujiageng734@gmail.com>: >> >> > 2011/7/15

Hello everyone, this is the fourth version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See

Hello everyone, this is the very first version of the patch series that introduces ARMv7 with virtualization extensions support in Xen. The series allows Xen and Dom0 to boot on a Cortex-A15 based Versatile Express simulator. See the following announce email for more informations about what we are trying to achieve, as well as the original git history: See