diff options
Diffstat (limited to 'arch/s390/kvm/gaccess.h')
| -rw-r--r-- | arch/s390/kvm/gaccess.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h index 2a6f8bfd22f8..df0a79dd8159 100644 --- a/arch/s390/kvm/gaccess.h +++ b/arch/s390/kvm/gaccess.h @@ -158,6 +158,7 @@ int read_guest_lc(struct kvm_vcpu *vcpu, unsigned long gra, void *data, enum gacc_mode { GACC_FETCH, GACC_STORE, + GACC_IFETCH, }; int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, @@ -244,6 +245,26 @@ int read_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data, } /** + * read_guest_instr - copy instruction data from guest space to kernel space + * @vcpu: virtual cpu + * @data: destination address in kernel space + * @len: number of bytes to copy + * + * Copy @len bytes from the current psw address (guest space) to @data (kernel + * space). + * + * The behaviour of read_guest_instr is identical to read_guest, except that + * instruction data will be read from primary space when in home-space or + * address-space mode. + */ +static inline __must_check +int read_guest_instr(struct kvm_vcpu *vcpu, void *data, unsigned long len) +{ + return access_guest(vcpu, vcpu->arch.sie_block->gpsw.addr, 0, data, len, + GACC_IFETCH); +} + +/** * write_guest_abs - copy data from kernel space to guest space absolute * @vcpu: virtual cpu * @gpa: guest physical (absolute) address |