1 /* SPDX-License-Identifier: GPL-2.0 */
17 #include "kvm-s390.h"
20  * kvm_s390_real_to_abs - convert guest real address to guest absolute address
21  * @prefix - guest prefix
22  * @gra - guest real address
32 		gra -= prefix;  in _kvm_s390_real_to_abs()
37  * kvm_s390_real_to_abs - convert guest real address to guest absolute address
38  * @vcpu - guest virtual cpu
39  * @gra - guest real address
51  * _kvm_s390_logical_to_effective - convert guest logical to effective address
69 		return ga & ((1UL << 31) - 1);  in _kvm_s390_logical_to_effective()
70 	return ga & ((1UL << 24) - 1);  in _kvm_s390_logical_to_effective()
74  * kvm_s390_logical_to_effective - convert guest logical to effective address
89 	return _kvm_s390_logical_to_effective(&vcpu->arch.sie_block->gpsw, ga);  in kvm_s390_logical_to_effective()
104  * put_guest_lc - write a simple variable to a guest vcpu's lowcore
113  * Returns zero on success or -EFAULT on error.
128 	kvm_write_guest(__vcpu->kvm, __gpa, &__x, sizeof(__x));	\
132  * write_guest_lc - copy data from kernel space to guest vcpu's lowcore
141  * Returns zero on success or -EFAULT on error.
152 	unsigned long gpa = gra + kvm_s390_get_prefix(vcpu);  in write_guest_lc()  local
154 	return kvm_write_guest(vcpu->kvm, gpa, data, len);  in write_guest_lc()
158  * read_guest_lc - copy data from guest vcpu's lowcore to kernel space
167  * Returns zero on success or -EFAULT on error.
178 	unsigned long gpa = gra + kvm_s390_get_prefix(vcpu);  in read_guest_lc()  local
180 	return kvm_read_guest(vcpu->kvm, gpa, data, len);  in read_guest_lc()
190 				     unsigned long *gpa, enum gacc_mode mode,
196 int check_gpa_range(struct kvm *kvm, unsigned long gpa, unsigned long length,
199 int access_guest_abs_with_key(struct kvm *kvm, gpa_t gpa, void *data,
209 int cmpxchg_guest_abs_with_key(struct kvm *kvm, gpa_t gpa, int len, __uint128_t *old,
213  * write_guest_with_key - copy data from kernel space to guest space
228  * around is taken into account for 24-, 31- and 64-bit addressing mode,
240  * Returns:  - zero on success
241  *	     - a negative value if e.g. the guest mapping is broken or in
242  *	       case of out-of-memory. In this case the contents of pgm are
245  *	     - a positive value if an access exception happened. In this case
267  * write_guest - copy data from kernel space to guest space
281 	u8 access_key = psw_bits(vcpu->arch.sie_block->gpsw).key;  in write_guest()
287  * read_guest_with_key - copy data from guest space to kernel space
309  * read_guest - copy data from guest space to kernel space
325 	u8 access_key = psw_bits(vcpu->arch.sie_block->gpsw).key;  in read_guest()
331  * read_guest_instr - copy instruction data from guest space to kernel space
341  * instruction data will be read from primary space when in home-space or
342  * address-space mode.
348 	u8 access_key = psw_bits(vcpu->arch.sie_block->gpsw).key;  in read_guest_instr()
350 	return access_guest_with_key(vcpu, ga, 0, data, len, GACC_IFETCH,  in read_guest_instr()
355  * write_guest_abs - copy data from kernel space to guest space absolute
357  * @gpa: guest physical (absolute) address
361  * Copy @len bytes from @data (kernel space) to @gpa (guest absolute address).
366  * Returns zero on success or -EFAULT on error.
371 int write_guest_abs(struct kvm_vcpu *vcpu, unsigned long gpa, void *data,  in write_guest_abs()  argument
374 	return kvm_write_guest(vcpu->kvm, gpa, data, len);  in write_guest_abs()
378  * read_guest_abs - copy data from guest space absolute to kernel space
380  * @gpa: guest physical (absolute) address
384  * Copy @len bytes from @gpa (guest absolute address) to @data (kernel space).
389  * Returns zero on success or -EFAULT on error.
394 int read_guest_abs(struct kvm_vcpu *vcpu, unsigned long gpa, void *data,  in read_guest_abs()  argument
397 	return kvm_read_guest(vcpu->kvm, gpa, data, len);  in read_guest_abs()
401  * write_guest_real - copy data from kernel space to guest space real
410  * Returns zero on success, -EFAULT when copying from @data failed, or
425  * read_guest_real - copy data from guest space real to kernel space
434  * Returns zero on success, -EFAULT when copying to @data failed, or
445 	return access_guest_real(vcpu, gra, data, len, 0);  in read_guest_real()