From d6aca3504c7ded5f4f46957e3685b9344d9743dd Mon Sep 17 00:00:00 2001 From: Juergen Gross Date: Thu, 2 Jun 2022 22:23:48 +0300 Subject: xen/grant-dma-ops: Add option to restrict memory access under Xen Introduce Xen grant DMA-mapping layer which contains special DMA-mapping routines for providing grant references as DMA addresses to be used by frontends (e.g. virtio) in Xen guests. Add the needed functionality by providing a special set of DMA ops handling the needed grant operations for the I/O pages. The subsequent commit will introduce the use case for xen-grant DMA ops layer to enable using virtio devices in Xen guests in a safe manner. Signed-off-by: Juergen Gross Signed-off-by: Oleksandr Tyshchenko Reviewed-by: Stefano Stabellini Link: https://lore.kernel.org/r/1654197833-25362-4-git-send-email-olekstysh@gmail.com Signed-off-by: Juergen Gross --- drivers/xen/Makefile | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/xen/Makefile') diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 5aae66e638a7..1a23cb0dc188 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -39,3 +39,4 @@ xen-gntalloc-y := gntalloc.o xen-privcmd-y := privcmd.o privcmd-buf.o obj-$(CONFIG_XEN_FRONT_PGDIR_SHBUF) += xen-front-pgdir-shbuf.o obj-$(CONFIG_XEN_UNPOPULATED_ALLOC) += unpopulated-alloc.o +obj-$(CONFIG_XEN_GRANT_DMA_OPS) += grant-dma-ops.o -- cgit v1.2.3