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Message-ID: <20210218165938.213678824@infradead.org>
User-Agent: quilt/0.66
Date:   Thu, 18 Feb 2021 17:59:38 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     x86@kernel.org, tony.luck@intel.com, pjt@google.com
Cc:     linux-kernel@vger.kernel.org, peterz@infradead.org,
        r.marek@assembler.cz, jpoimboe@redhat.com, jikos@kernel.org
Subject: [RFC][PATCH 0/2] x86/retpoline: Retpoline on a diet
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Hi!

The first patch rearranges the implementation and consolidates unused bytes.
The second patch uses INT3 over LFENCE to shrink the retpoline to 15 bytes, by
which 4 can live in a cacheline.

Patches have been boot tested on my IVB.