From 800bb1c8dc80bb4121446b56813067f3ea44edee Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 16 Mar 2020 20:32:14 +0100 Subject: mm: handle multiple owners of device private pages in migrate_vma Add a new src_owner field to struct migrate_vma. If the field is set, only device private pages with page->pgmap->owner equal to that field are migrated. If the field is not set only "normal" pages are migrated. Fixes: df6ad69838fc ("mm/device-public-memory: device memory cache coherent with CPU") Link: https://lore.kernel.org/r/20200316193216.920734-3-hch@lst.de Signed-off-by: Christoph Hellwig Reviewed-by: Ralph Campbell Tested-by: Bharata B Rao Signed-off-by: Jason Gunthorpe --- arch/powerpc/kvm/book3s_hv_uvmem.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/kvm') diff --git a/arch/powerpc/kvm/book3s_hv_uvmem.c b/arch/powerpc/kvm/book3s_hv_uvmem.c index 67fefb03b9b7..f44f6b27950f 100644 --- a/arch/powerpc/kvm/book3s_hv_uvmem.c +++ b/arch/powerpc/kvm/book3s_hv_uvmem.c @@ -563,6 +563,7 @@ kvmppc_svm_page_out(struct vm_area_struct *vma, unsigned long start, mig.end = end; mig.src = &src_pfn; mig.dst = &dst_pfn; + mig.src_owner = &kvmppc_uvmem_pgmap; mutex_lock(&kvm->arch.uvmem_lock); /* The requested page is already paged-out, nothing to do */ -- cgit v1.2.3