x86: copy_fpstate_to_sigframe(): have fpregs_soft_get() use kernel buffer

... then copy_to_user() the results

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-02-21 00:11:55 -05:00
commit 36c8673f90