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vfio/pci: drop nth_page() usage within SG entry 

It's no longer required to use nth_page() when iterating pages within a
single SG entry, so let's drop the nth_page() usage.

Link: https://lkml.kernel.org/r/20250901150359.867252-33-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Yishai Hadas <yishaih@nvidia.com>
Cc: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Cc: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
David Hildenbrand 2025-09-01 17:03:53 +02:00 committed by Andrew Morton
parent d66ff3db89
commit fae6406bca
2 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/vfio/pci/pds/lm.c
View File

@ -151,8 +151,7 @@ static struct page *pds_vfio_get_file_page(struct pds_vfio_lm_file *lm_file,
lm_file->last_offset_sg = sg;
lm_file->sg_last_entry += i;
lm_file->last_offset = cur_offset;
return nth_page(sg_page(sg),
(offset - cur_offset) / PAGE_SIZE);
return sg_page(sg) + (offset - cur_offset) / PAGE_SIZE;
}
cur_offset += sg->length;
}

3
drivers/vfio/pci/virtio/migrate.c
View File

@ -53,8 +53,7 @@ virtiovf_get_migration_page(struct virtiovf_data_buffer *buf,
buf->last_offset_sg = sg;
buf->sg_last_entry += i;
buf->last_offset = cur_offset;
return nth_page(sg_page(sg),
(offset - cur_offset) / PAGE_SIZE);
return sg_page(sg) + (offset - cur_offset) / PAGE_SIZE;
}
cur_offset += sg->length;
}