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| author | James Morse <james.morse@arm.com> | 2018-07-19 16:24:24 +0100 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2018-07-21 16:02:31 +0100 |
| commit | 539aee0edb9fdc8f465e3843c261acc88c47d8ee (patch) | |
| tree | 379427d3095a0421824b8434ae98d4800a773ddf /virt | |
| parent | be26b3a73413c2ebf14d5e76a66ad964e6458080 (diff) | |
| download | linux-539aee0edb9fdc8f465e3843c261acc88c47d8ee.tar.bz2 | |
KVM: arm64: Share the parts of get/set events useful to 32bit
The get/set events helpers to do some work to check reserved
and padding fields are zero. This is useful on 32bit too.
Move this code into virt/kvm/arm/arm.c, and give the arch
code some underscores.
This is temporarily hidden behind __KVM_HAVE_VCPU_EVENTS until
32bit is wired up.
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Dongjiu Geng <gengdongjiu@huawei.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'virt')
| -rw-r--r-- | virt/kvm/arm/arm.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 1c72247aeb1d..14f8fad1c7ae 100644 --- a/virt/kvm/arm/arm.c +++ b/virt/kvm/arm/arm.c @@ -1050,6 +1050,34 @@ static int kvm_arm_vcpu_has_attr(struct kvm_vcpu *vcpu, return ret; } +#ifdef __KVM_HAVE_VCPU_EVENTS /* temporary: until 32bit is wired up */ +static int kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + memset(events, 0, sizeof(*events)); + + return __kvm_arm_vcpu_get_events(vcpu, events); +} + +static int kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu, + struct kvm_vcpu_events *events) +{ + int i; + + /* check whether the reserved field is zero */ + for (i = 0; i < ARRAY_SIZE(events->reserved); i++) + if (events->reserved[i]) + return -EINVAL; + + /* check whether the pad field is zero */ + for (i = 0; i < ARRAY_SIZE(events->exception.pad); i++) + if (events->exception.pad[i]) + return -EINVAL; + + return __kvm_arm_vcpu_set_events(vcpu, events); +} +#endif /* __KVM_HAVE_VCPU_EVENTS */ + long kvm_arch_vcpu_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { |