x86/fpu: Add a pkru argument to copy_uabi_to_xstate()
In preparation for moving PKRU handling code out of fpu_copy_uabi_to_guest_fpstate() and into copy_uabi_to_xstate(), add an argument that copy_uabi_from_kernel_to_xstate() can use to pass the canonical location of the PKRU value. For copy_sigframe_from_user_to_xstate() the kernel will actually restore the PKRU value from the fpstate, but pass in the thread_struct's pkru location anyways for consistency. Signed-off-by:Kyle Huey <me@kylehuey.com> Signed-off-by:
Dave Hansen <dave.hansen@linux.intel.com> Link: https://lore.kernel.org/all/20221115230932.7126-4-khuey%40kylehuey.com
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1c813ce0
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