KVM: stats: Support binary stats retrieval for a VCPU
Add a VCPU ioctl to get a statistics file descriptor by which a read functionality is provided for userspace to read out VCPU stats header, descriptors and data. Define VCPU statistics descriptors and header for all architectures. Reviewed-by:David Matlack <dmatlack@google.com> Reviewed-by:
Ricardo Koller <ricarkol@google.com> Reviewed-by:
Krish Sadhukhan <krish.sadhukhan@oracle.com> Reviewed-by:
Fuad Tabba <tabba@google.com> Tested-by: Fuad Tabba <tabba@google.com> #arm64 Signed-off-by:
Jing Zhang <jingzhangos@google.com> Message-Id: <20210618222709.1858088-5-jingzhangos@google.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com>
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