Stefano Stabellini 97729b653d xen/swiotlb: check if the swiotlb has already been initialized ... xen_swiotlb_init calls swiotlb_late_init_with_tbl, which fails with -ENOMEM if the swiotlb has already been initialized. Add an explicit check io_tlb_default_mem != NULL at the beginning of xen_swiotlb_init. If the swiotlb is already initialized print a warning and return -EEXIST. On x86, the error propagates. On ARM, we don't actually need a special swiotlb buffer (yet), any buffer would do. So ignore the error and continue. CC: boris.ostrovsky@oracle.com CC: jgross@suse.com Signed-off-by: Stefano Stabellini <stefano.stabellini@xilinx.com> Reviewed-by: Boris Ostrovsky <boris.ostrvsky@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210512201823.1963-3-sstabellini@kernel.org Signed-off-by: Juergen Gross <jgross@suse.com>		2021-05-14 15:52:11 +02:00
..
enlighten.c	arm/xen: Don't probe xenbus as part of an early initcall	2021-02-11 07:49:37 +01:00
grant-table.c	xen: re-introduce support for grant v2 interface	2017-11-06 15:50:17 -05:00
hypercall.S	get rid of legacy 'get_ds()' function	2019-03-04 10:50:14 -08:00
Makefile	xen/efi: have a common runtime setup function	2019-10-02 10:31:07 -04:00
mm.c	xen/swiotlb: check if the swiotlb has already been initialized	2021-05-14 15:52:11 +02:00
p2m.c	Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}	2021-03-10 16:39:29 -06:00