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linux/arch/s390/include/asm/mem_encrypt.h

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s390/mm: force swiotlb for protected virtualization On s390, protected virtualization guests have to use bounced I/O buffers. That requires some plumbing. Let us make sure, any device that uses DMA API with direct ops correctly is spared from the problems, that a hypervisor attempting I/O to a non-shared page would bring. Signed-off-by: Halil Pasic <pasic@linux.ibm.com> Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Reviewed-by: Michael Mueller <mimu@linux.ibm.com> Tested-by: Michael Mueller <mimu@linux.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2018-09-13 18:57:16 +02:00
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef S390_MEM_ENCRYPT_H__
#define S390_MEM_ENCRYPT_H__
#ifndef __ASSEMBLY__
int set_memory_encrypted(unsigned long addr, int numpages);
int set_memory_decrypted(unsigned long addr, int numpages);
#endif /* __ASSEMBLY__ */
#endif /* S390_MEM_ENCRYPT_H__ */
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