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Date:   Tue, 20 Oct 2020 11:55:25 +0200
From:   Joerg Roedel <jroedel@suse.de>
To:     Sean Christopherson <sean.j.christopherson@intel.com>
Cc:     Joerg Roedel <joro@8bytes.org>, x86@kernel.org,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Kees Cook <keescook@chromium.org>,
        Arvind Sankar <nivedita@alum.mit.edu>,
        Martin Radev <martin.b.radev@gmail.com>,
        Tom Lendacky <thomas.lendacky@amd.com>,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/5] x86/boot/compressed/64: Introduce sev_status
Message-ID: <20201020095525.GH9328@suse.de>
References: <20201019151121.826-1-joro@8bytes.org>
 <20201019151121.826-2-joro@8bytes.org>
 <20201020005925.GA24596@linux.intel.com>
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On Mon, Oct 19, 2020 at 05:59:25PM -0700, Sean Christopherson wrote:
> On Mon, Oct 19, 2020 at 05:11:17PM +0200, Joerg Roedel wrote:
> > +	push	%rax
> > +	push	%rcx
> 
> There's no need to save/restore RAX and RCX, they are callee save.  This
> function is only called from C, so I doubt it's using a custom ABI.

Right, removed the save/restore of these registers from the function.

Thanks,

	Joerg