Re: [PATCH 1/2] x86/virt/tdx: Drop tdx_clflush_*()

[Edgecombe, Rick P]

On Wed, 2026-09-23 at 10:47 +0300, Tony Lindgren wrote:
> On Tue, Sep 22, 2026 at 01:52:14PM -0700, Rick Edgecombe wrote:
> > In practice this bit has never been set by any TDX module, so flushing
> > is unneeded. Going forward the TDX docs will be updated to clarify that
> > CLFLUSH_BEFORE_ALLOC will never be set in any future TDX module either.
> 
> Should there be a separate patch first before these two patches to bail
> out if the TDX module TDX_FEATURES0 CLFLUSH_BEFORE_ALLOC bit is ever set?
> 
> Then dropping the related code would be safe to do without having to
> ponder if it's safe to do.

Eh, I don't think we need it. If docs are updated to say TDX will never set it,
then we would really be sanity checking the TDX module specs. Doesn't seem worth
the code.