Displaying 5 results from an estimated 5 matches for "pgt_l1_page_table".
2007 May 14
0
[PATCH] x86: ptwr adjustments
...3238,13 +3238,14 @@ static int ptwr_emulated_update(
/* We 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)) )...
2008 Nov 04
7
[PATCH 1/1] Xen PV support for hugepages
...return -EINVAL;
}
+ if ( l2e_get_flags(l2e) & _PAGE_PSE )
+ {
+ unsigned long mfn = l2e_get_pfn(l2e);
+ unsigned long m, me;
+ struct page_info *page = mfn_to_page(mfn);
+ int writeable;
- rc = get_page_and_type_from_pagenr(
- l2e_get_pfn(l2e), PGT_l1_page_table, d, 0);
- if ( unlikely(rc == -EINVAL) && get_l2_linear_pagetable(l2e, pfn, d) )
- rc = 0;
+ if ( !opt_allow_hugepage )
+ return -EINVAL;
+
+ writeable = l2e_get_flags(l2e) & _PAGE_RW;
+
+ rc = get_data_page(page, d, writeable);
+ if ( un...
2008 Jan 05
11
[PATCH] Fix performance problems with mprotect()
While working on a database scaling problem using a SAP database test suite we discovered that these enterprise level large shared memory databases are very heavy users of mprotect(), to the extent that the performance overhead in current Xenolinux impacts scaling beyond a few cpus quite badly. A single cpu run under Xen has a nominal impact, but scaling out to 8 cpus results in a performance of
2011 Jul 21
51
Linux Stubdom Problem
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
2013 Dec 06
36
[V6 PATCH 0/7]: PVH dom0....
Hi,
V6: The only change from V5 is in patch #6:
- changed comment to reflect autoxlate
- removed a redundant ASSERT
- reworked logic a bit so that get_page_from_gfn() is called with NULL
for p2m type as before. arm has ASSERT wanting it to be NULL.
Tim: patch 4 needs your approval.
Daniel: patch 5 needs your approval.
These patches implement PVH dom0.
Patches 1 and 2