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From:   Thomas Gleixner <tglx@linutronix.de>
To:     "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc:     mingo@redhat.com, bp@alien8.de, dave.hansen@intel.com,
        luto@kernel.org, peterz@infradead.org,
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        tony.luck@intel.com, vkuznets@redhat.com, wanpengli@tencent.com,
        x86@kernel.org, linux-kernel@vger.kernel.org,
        Kai Huang <kai.huang@linux.intel.com>
Subject: Re: [PATCHv2 03/29] x86/tdx: Add __tdx_module_call() and
 __tdx_hypercall() helper functions
In-Reply-To: <20220202025519.csymm7r23b3ltpia@black.fi.intel.com>
References: <20220124150215.36893-1-kirill.shutemov@linux.intel.com>
 <20220124150215.36893-4-kirill.shutemov@linux.intel.com>
 <87a6faz7cs.ffs@tglx> <20220202025519.csymm7r23b3ltpia@black.fi.intel.com>
Date:   Wed, 02 Feb 2022 18:08:11 +0100
Message-ID: <878ruturgk.ffs@tglx>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Kirill,

On Wed, Feb 02 2022 at 05:55, Kirill A. Shutemov wrote:
> On Tue, Feb 01, 2022 at 08:58:59PM +0100, Thomas Gleixner wrote:
> Okay, below is my take on addressing feedback for both __tdx_module_call()
> and __tdx_hypercall().
>
> It is fixup for whole patchset. It has to be folded accordingly. I wanted
> to check if it works and see if I understand your request correctly.
>
> __tdx_module_call() is now implemented by including tdxcall.S can using
> the macro defined there. Host side of TDX can do the same on their side.
> TDX_MODULE_* offsets are now outside of CONFIG_INTEL_TDX_GUEST and can be
> used by both host can guest.
>
> I changed __tdx_hypercall() to take single argument with struct pointer
> that used for both input and output.
>
> Is it the right direction? Or did I misunderstand something?

Looks good. Nice consolidation and I like the idea of using one
structure for in and out.

Thanks,

        tglx