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
110  * The size of the variable may be 1, 2, 4 or 8 bytes. The destination
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 			    u8 ar, unsigned long *gpa, enum gacc_mode mode);
201  * write_guest - copy data from kernel space to guest space
215  * around is taken into account for 24-, 31- and 64-bit addressing mode,
227  * Returns:  - zero on success
228  *	     - a negative value if e.g. the guest mapping is broken or in
229  *	       case of out-of-memory. In this case the contents of pgm are
232  *	     - a positive value if an access exception happened. In this case
253  * read_guest - copy data from guest space to kernel space
273  * read_guest_instr - copy instruction data from guest space to kernel space
283  * instruction data will be read from primary space when in home-space or
284  * address-space mode.
294  * write_guest_abs - copy data from kernel space to guest space absolute
296  * @gpa: guest physical (absolute) address
300  * Copy @len bytes from @data (kernel space) to @gpa (guest absolute address).
305  * Returns zero on success or -EFAULT on error.
310 int write_guest_abs(struct kvm_vcpu *vcpu, unsigned long gpa, void *data,  in write_guest_abs()  argument
313 	return kvm_write_guest(vcpu->kvm, gpa, data, len);  in write_guest_abs()
317  * read_guest_abs - copy data from guest space absolute to kernel space
319  * @gpa: guest physical (absolute) address
323  * Copy @len bytes from @gpa (guest absolute address) to @data (kernel space).
328  * Returns zero on success or -EFAULT on error.
333 int read_guest_abs(struct kvm_vcpu *vcpu, unsigned long gpa, void *data,  in read_guest_abs()  argument
336 	return kvm_read_guest(vcpu->kvm, gpa, data, len);  in read_guest_abs()
340  * write_guest_real - copy data from kernel space to guest space real
351  * Returns zero on success or -EFAULT on error.
359 	return access_guest_real(vcpu, gra, data, len, 1);  in write_guest_real()
363  * read_guest_real - copy data from guest space real to kernel space
374  * Returns zero on success or -EFAULT on error.