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| author | David Hildenbrand <dahi@linux.vnet.ibm.com> | 2015-11-16 17:42:11 +0300 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@de.ibm.com> | 2016-02-10 15:12:50 +0300 |
| commit | 92c9632119b67f3e201240f6813cd0343bfb0141 (patch) | |
| tree | 3ff5116af2531962e9686cb8b1214f907aff105c /arch/s390/kvm/gaccess.h | |
| parent | 634790b82759c98ee57c80966d859083fa2fcd8c (diff) | |
| download | linux-92c9632119b67f3e201240f6813cd0343bfb0141.tar.xz | |
KVM: s390: gaccess: introduce access modes
We will need special handling when fetching instructions, so let's
introduce new guest access modes GACC_FETCH and GACC_STORE instead
of a write flag. An additional patch will then introduce GACC_IFETCH.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm/gaccess.h')
| -rw-r--r-- | arch/s390/kvm/gaccess.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/s390/kvm/gaccess.h b/arch/s390/kvm/gaccess.h index ef03726cc661..2a6f8bfd22f8 100644 --- a/arch/s390/kvm/gaccess.h +++ b/arch/s390/kvm/gaccess.h @@ -155,16 +155,21 @@ int read_guest_lc(struct kvm_vcpu *vcpu, unsigned long gra, void *data, return kvm_read_guest(vcpu->kvm, gpa, data, len); } +enum gacc_mode { + GACC_FETCH, + GACC_STORE, +}; + int guest_translate_address(struct kvm_vcpu *vcpu, unsigned long gva, - ar_t ar, unsigned long *gpa, int write); + ar_t ar, unsigned long *gpa, enum gacc_mode mode); int check_gva_range(struct kvm_vcpu *vcpu, unsigned long gva, ar_t ar, - unsigned long length, int is_write); + unsigned long length, enum gacc_mode mode); int access_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data, - unsigned long len, int write); + unsigned long len, enum gacc_mode mode); int access_guest_real(struct kvm_vcpu *vcpu, unsigned long gra, - void *data, unsigned long len, int write); + void *data, unsigned long len, enum gacc_mode mode); /** * write_guest - copy data from kernel space to guest space @@ -215,7 +220,7 @@ static inline __must_check int write_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data, unsigned long len) { - return access_guest(vcpu, ga, ar, data, len, 1); + return access_guest(vcpu, ga, ar, data, len, GACC_STORE); } /** @@ -235,7 +240,7 @@ static inline __must_check int read_guest(struct kvm_vcpu *vcpu, unsigned long ga, ar_t ar, void *data, unsigned long len) { - return access_guest(vcpu, ga, ar, data, len, 0); + return access_guest(vcpu, ga, ar, data, len, GACC_FETCH); } /** |