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authorVitaly Kuznetsov <vkuznets@redhat.com>2020-05-25 17:41:17 +0300
committerPaolo Bonzini <pbonzini@redhat.com>2020-06-01 11:26:06 +0300
commit68fd66f100d196d35ab3008d4c69af3a0d7e7200 (patch)
tree774034c048f7da940fb2a98ee7ff4c19e9d37a32 /virt/kvm
parent84b09f33a5de528d05c007d9847403a364dfe35e (diff)
downloadlinux-68fd66f100d196d35ab3008d4c69af3a0d7e7200.tar.xz
KVM: x86: extend struct kvm_vcpu_pv_apf_data with token info
Currently, APF mechanism relies on the #PF abuse where the token is being passed through CR2. If we switch to using interrupts to deliver page-ready notifications we need a different way to pass the data. Extent the existing 'struct kvm_vcpu_pv_apf_data' with token information for page-ready notifications. While on it, rename 'reason' to 'flags'. This doesn't change the semantics as we only have reasons '1' and '2' and these can be treated as bit flags but KVM_PV_REASON_PAGE_READY is going away with interrupt based delivery making 'reason' name misleading. The newly introduced apf_put_user_ready() temporary puts both flags and token information, this will be changed to put token only when we switch to interrupt based notifications. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20200525144125.143875-3-vkuznets@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'virt/kvm')
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