diff options
| author | Heiko Carstens | 2014-01-01 16:09:21 +0100 |
|---|---|---|
| committer | Christian Borntraeger | 2014-04-22 13:24:35 +0200 |
| commit | dfeec843fb237d73947e818f961e8d6f0df22b01 (patch) | |
| tree | a5e854b8a77d0fd241f1d2d2dfc8bdf019b95d04 /include/linux/kvm_host.h | |
| parent | bcd846837c43ccccc932036d5a634bee48f1ff4f (diff) | |
KVM: add kvm_is_error_gpa() helper
It's quite common (in the s390 guest access code) to test if a guest
physical address points to a valid guest memory area or not.
So add a simple helper function in common code, since this might be
of interest for other architectures as well.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 7d21cf9f4380..471d1400c4ac 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -879,6 +879,13 @@ static inline hpa_t pfn_to_hpa(pfn_t pfn) return (hpa_t)pfn << PAGE_SHIFT; } +static inline bool kvm_is_error_gpa(struct kvm *kvm, gpa_t gpa) +{ + unsigned long hva = gfn_to_hva(kvm, gpa_to_gfn(gpa)); + + return kvm_is_error_hva(hva); +} + static inline void kvm_migrate_timers(struct kvm_vcpu *vcpu) { set_bit(KVM_REQ_MIGRATE_TIMER, &vcpu->requests); |