linux-kernel - Re: [PATCH v2 04/20] x86: decompressor: Use standard calling convention for trampoline

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Message-ID: <20230515140046.yaxvt462bt6ovew2@box.shutemov.name>
Date:   Mon, 15 May 2023 17:00:46 +0300
From:   "Kirill A. Shutemov" <kirill@...temov.name>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Evgeniy Baskov <baskov@...ras.ru>,
        Borislav Petkov <bp@...en8.de>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alexey Khoroshilov <khoroshilov@...ras.ru>,
        Peter Jones <pjones@...hat.com>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Dave Young <dyoung@...hat.com>,
        Mario Limonciello <mario.limonciello@....com>,
        Kees Cook <keescook@...omium.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH v2 04/20] x86: decompressor: Use standard calling
 convention for trampoline

On Mon, May 08, 2023 at 09:03:14AM +0200, Ard Biesheuvel wrote:
> Update the trampoline code so its arguments are passed via RDI and RSI,
> which matches the ordinary SysV calling convention for x86_64. This will
> allow us to call this code directly from C.
> 
> Signed-off-by: Ard Biesheuvel <ardb@...nel.org>

Acked-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
  Kiryl Shutsemau / Kirill A. Shutemov