search for: clear_highpag

Displaying 8 results from an estimated 8 matches for "clear_highpag".

Did you mean: clear_highpage
2008 Oct 27
0
[PATCH 4/4] linux/i386: utilize hypervisor highmem handling helpers
...============================== --- head-2008-10-24.orig/arch/i386/mm/highmem-xen.c 2008-10-27 11:56:39.000000000 +0100 +++ head-2008-10-24/arch/i386/mm/highmem-xen.c 2008-10-27 11:56:59.000000000 +0100 @@ -151,9 +151,56 @@ struct page *kmap_atomic_to_page(void *p return pte_page(*pte); } +void clear_highpage(struct page *page) +{ + void *kaddr; + + if (likely(xen_feature(XENFEAT_highmem_assist)) + && PageHighMem(page)) { + struct mmuext_op meo; + + meo.cmd = MMUEXT_CLEAR_PAGE; + meo.arg1.mfn = pfn_to_mfn(page_to_pfn(page)); + if (HYPERVISOR_mmuext_op(&meo, 1, NULL, DOMID_SELF) == 0...
2020 Jun 19
0
[PATCH 15/16] mm/hmm/test: add self tests for THP migration
...e); + /* This flag is only set if a whole huge page is migrated. */ + is_huge = *src & MIGRATE_PFN_COMPOUND; + dpage = dmirror_devmem_alloc_page(mdevice, is_huge); if (!dpage) - continue; - - rpage = dpage->zone_device_data; - if (spage) - copy_highpage(rpage, spage); - else - clear_highpage(rpage); + goto next; /* * Normally, a device would use the page->zone_device_data to @@ -623,6 +668,7 @@ static void dmirror_migrate_alloc_and_copy(struct migrate_vma *args, * the simulated device memory and that page holds the pointer * to the mirror. */ + rpage = dpage...
2020 Nov 06
12
[PATCH v3 0/6] mm/hmm/nouveau: add THP migration to migrate_vma_*
This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on
2020 Sep 02
10
[PATCH v2 0/7] mm/hmm/nouveau: add THP migration to migrate_vma_*
This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan
2011 Mar 20
6
PATCH: Hugepage support for Domains booting with 4KB pages
We have implemented hugepage support for guests in following manner In our implementation we added a parameter hugepage_num which is specified in the config file of the DomU. It is the number of hugepages that the guest is guaranteed to receive whenever the kernel asks for hugepage by using its boot time parameter or reserving after booting (eg. Using echo XX > /proc/sys/vm/nr_hugepages).
2020 Jun 19
22
[PATCH 00/16] mm/hmm/nouveau: THP mapping and migration
These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM self tests. Patch 7-8 prepare nouveau for the meat of this series which adds support and testing for compound page mapping of system memory (patches 9-11) and compound page migration to device private memory (patches 12-16). Since these changes are split
2019 Sep 11
6
[PATCH 0/4] HMM tests and minor fixes
These changes are based on Jason's latest hmm branch. Patch 1 was previously posted here [1] but was dropped from the orginal series. Hopefully, the tests will reduce concerns about edge conditions. I'm sure more tests could be usefully added but I thought this was a good starting point. [1] https://lore.kernel.org/linux-mm/20190726005650.2566-6-rcampbell at nvidia.com/ Ralph Campbell
2020 Jan 13
9
[PATCH v6 0/6] mm/hmm/test: add self tests for HMM
This series adds new functions to the mmu interval notifier API to allow device drivers with MMUs to dynamically mirror a process' page tables based on device faults and invalidation callbacks. The Nouveau driver is updated to use the extended API and a set of stand alone self tests is added to help validate and maintain correctness. The patches are based on linux-5.5.0-rc6 and are for