On Fri, Sep 11, 2020 at 12:53:45PM +0200, Greg Kurz wrote: > ENOTSUPP is a linux only thingy, the value of which is unknown to > userspace, not to be confused with ENOTSUP which linux maps to > EOPNOTSUPP, as permitted by POSIX [1]: > > [EOPNOTSUPP] > Operation not supported on socket. The type of socket (address family > or protocol) does not support the requested operation. A conforming > implementation may assign the same values for [EOPNOTSUPP] and [ENOTSUP]. > > Return -EOPNOTSUPP instead of -ENOTSUPP for the following ioctls: > - KVM_GET_FPU for Book3s and BookE > - KVM_SET_FPU for Book3s and BookE > - KVM_GET_DIRTY_LOG for BookE > > This doesn't affect QEMU which doesn't call the KVM_GET_FPU and > KVM_SET_FPU ioctls on POWER anyway since they are not supported, > and _buggily_ ignores anything but -EPERM for KVM_GET_DIRTY_LOG. > > [1] https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html > > Signed-off-by: Greg Kurz <groug@xxxxxxxx> Thanks, applied. Paul.
