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Date:   Thu, 4 Apr 2019 11:42:26 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Andy Lutomirski <luto@kernel.org>
Cc:     Daniel Bristot de Oliveira <bristot@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Steven Rostedt <rostedt@goodmis.org>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Ingo Molnar <mingo@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "Joel Fernandes (Google)" <joel@joelfernandes.org>,
        Jiri Olsa <jolsa@redhat.com>,
        Namhyung Kim <namhyung@kernel.org>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Tommaso Cucinotta <tommaso.cucinotta@santannapisa.it>,
        Romulo Silva de Oliveira <romulo.deoliveira@ufsc.br>,
        Clark Williams <williams@redhat.com>, X86 ML <x86@kernel.org>
Subject: Re: [RFC PATCH 0/7] Early task context tracking
Message-ID: <20190404094226.GV4038@hirez.programming.kicks-ass.net>
References: <cover.1554234787.git.bristot@redhat.com>
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On Wed, Apr 03, 2019 at 05:01:02PM -0700, Andy Lutomirski wrote:
> I would much rather do the opposite: completely remove context
> tracking from the asm and, instead, stick it into the C code.  We'd
> need to make sure that the C code is totally immune from tracing,
> kprobes, etc, but it would be a nice cleanup.  And then you could fix
> this bug in C!

Right, so you had some prelim patches toward that a few weeks ago. Esp.
for the idtentry stuff that looked fairly straight forward.