[PATCH v2 5/5] arm64/fpsimd: Document the use of TIF_FOREIGN_FPSTATE by KVM

[Mark Brown]

On Thu, Oct 28, 2021 at 12:16:40PM +0100, Marc Zyngier wrote:
> The bit of documentation that talks about TIF_FOREIGN_FPSTATE
> does not mention the ungodly tricks that KVM plays with this flag.
> 
> Try and document this for the posterity.

Reviwed-by: Mark Brown <broonie at kernel.org>
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