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| author |   Radim Krčmář <rkrcmar@redhat.com> | 2017-04-26 22:32:19 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2017-04-27 14:12:22 +0200 |
| commit | 72875d8a4d92f6f37e051be522b2252fd49bd50e (patch) | |
| tree | f42dd5ca2b21b57abbb4cc656aadf641cfaf1412 /include/linux/kvm_host.h | |
| parent | Merge tag 'kvm-s390-next-4.12-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD (diff) | |
| download | linux-dev-72875d8a4d92f6f37e051be522b2252fd49bd50e.tar.xz linux-dev-72875d8a4d92f6f37e051be522b2252fd49bd50e.zip | |
KVM: add kvm_{test,clear}_request to replace {test,clear}_bit
Users were expected to use kvm_check_request() for testing and clearing,
but request have expanded their use since then and some users want to
only test or do a faster clear.
Make sure that requests are not directly accessed with bit operations.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/linux/kvm_host.h')
| -rw-r--r-- | include/linux/kvm_host.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 397b7b5b1933..374fa92c7657 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1079,10 +1079,20 @@ static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) set_bit(req, &vcpu->requests); } +static inline bool kvm_test_request(int req, struct kvm_vcpu *vcpu) +{ + return test_bit(req, &vcpu->requests); +} + +static inline void kvm_clear_request(int req, struct kvm_vcpu *vcpu) +{ + clear_bit(req, &vcpu->requests); +} + static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu) { - if (test_bit(req, &vcpu->requests)) { - clear_bit(req, &vcpu->requests); + if (kvm_test_request(req, vcpu)) { + kvm_clear_request(req, vcpu); /* * Ensure the rest of the request is visible to kvm_check_request's |