arm64: Relax licensing of arm64 Xen DMA operations (35c8ab4c) · Commits · 戴 / test

With Xen configured into the arm64 kernel, any driver allocating DMA'able memory for PCI operations, must be GPL compatible, regardless of its interaction with Xen. This patch relaxes the GPL requirement of xen_dma_ops and its dependencies to allow open source drivers to be compiled for the arm64 architecture. Signed-off-by:

Chuck Tuffli <chuck.tuffli@emulex.com>

arch/arm/xen/enlighten.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -29,10 +29,10 @@

		struct start_info _xen_start_info;
		struct start_info *xen_start_info = &_xen_start_info;
		EXPORT_SYMBOL_GPL(xen_start_info);
		EXPORT_SYMBOL(xen_start_info);

		enum xen_domain_type xen_domain_type = XEN_NATIVE;
		EXPORT_SYMBOL_GPL(xen_domain_type);
		EXPORT_SYMBOL(xen_domain_type);

		struct shared_info xen_dummy_shared_info;
		struct shared_info HYPERVISOR_shared_info = (void )&xen_dummy_shared_info;

arch/arm/xen/mm.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -149,7 +149,7 @@ void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)
		EXPORT_SYMBOL_GPL(xen_destroy_contiguous_region);

		struct dma_map_ops *xen_dma_ops;
		EXPORT_SYMBOL_GPL(xen_dma_ops);
		EXPORT_SYMBOL(xen_dma_ops);

		static struct dma_map_ops xen_swiotlb_dma_ops = {
		.mapping_error = xen_swiotlb_dma_mapping_error,

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