mainline inclusion
from mainline-v5.16-rc1
commit bf5d0047
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I590ZC
CVE: NA

Intel-SIG: commit bf5d0047 x86/fpu: Replace KVMs home brewed FPU copy to user.

--------------------------------

Similar to the copy from user function the FPU core has this already
implemented with all bells and whistles.

Get rid of the duplicated code and use the core functionality.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Cc: kvm@vger.kernel.org
Link: https://lkml.kernel.org/r/20211015011539.244101845@linutronix.deSigned-off-by: NLin Wang <lin.x.wang@intel.com>