linux-kernel - Re: [PATCH, REBASED] x86/tdx: Drop flags from __tdx

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Message-ID: <20230321101519.GG2234901@hirez.programming.kicks-ass.net>
Date:   Tue, 21 Mar 2023 11:15:19 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     bp@...en8.de, dave.hansen@...el.com, luto@...nel.org,
        linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org,
        sathyanarayanan.kuppuswamy@...ux.intel.com, tglx@...utronix.de,
        x86@...nel.org
Subject: Re: [PATCH, REBASED] x86/tdx: Drop flags from __tdx_hypercall()

On Tue, Mar 21, 2023 at 03:35:11AM +0300, Kirill A. Shutemov wrote:
> After TDX_HCALL_ISSUE_STI got dropped, the only flag left is
> TDX_HCALL_HAS_OUTPUT. The flag indicates if the caller wants to see
> tdx_hypercall_args updated based on the hypercall output.
> 
> Drop the flags and provide __tdx_hypercall_ret() that matches
> TDX_HCALL_HAS_OUTPUT semantics.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Suggested-by: Peter Zijlstra <peterz@...radead.org>

Thanks!

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>