4.18-stable review patch. If anyone has any objections, please let me know.
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From: Stefano Stabellini stefanos@xilinx.com
commit f9005571701920551bcf54a500973fb61f2e1eda upstream.
xen_create_contiguous_region has now only an implementation if CONFIG_XEN_PV is defined. However, on ARM we never set CONFIG_XEN_PV but we do have an implementation of xen_create_contiguous_region which is required for swiotlb-xen to work correctly (although it just sets *dma_handle).
[backport: remove change to xen_remap_pfn]
Cc: stable@vger.kernel.org # 4.12 Fixes: 16624390816c ("xen: create xen_create/destroy_contiguous_region() stubs for PVHVM only builds") Signed-off-by: Stefano Stabellini stefanos@xilinx.com Reviewed-by: Juergen Gross jgross@suse.com CC: Jeff.Kubascik@dornerworks.com CC: Jarvis.Roach@dornerworks.com CC: Nathan.Studer@dornerworks.com CC: vkuznets@redhat.com CC: boris.ostrovsky@oracle.com CC: jgross@suse.com CC: julien.grall@arm.com Signed-off-by: Juergen Gross jgross@suse.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/xen/xen-ops.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -41,7 +41,7 @@ int xen_setup_shutdown_event(void);
extern unsigned long *xen_contiguous_bitmap;
-#ifdef CONFIG_XEN_PV +#if defined(CONFIG_XEN_PV) || defined(CONFIG_ARM) || defined(CONFIG_ARM64) int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, unsigned int address_bits, dma_addr_t *dma_handle);