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Date:   Thu, 8 Nov 2018 23:12:59 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     Andy Lutomirski <luto@amacapital.net>
Cc:     "Christopherson, Sean J" <sean.j.christopherson@intel.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Andrew Lutomirski <luto@kernel.org>,
        Jann Horn <jannh@google.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Rich Felker <dalias@libc.org>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Jethro Beekman <jethro@fortanix.com>,
        Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>,
        Florian Weimer <fweimer@redhat.com>,
        Linux API <linux-api@vger.kernel.org>, X86 ML <x86@kernel.org>,
        linux-arch <linux-arch@vger.kernel.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Peter Zijlstra <peterz@infradead.org>, nhorman@redhat.com,
        npmccallum@redhat.com, "Ayoun, Serge" <serge.ayoun@intel.com>,
        shay.katz-zamir@intel.com, linux-sgx@vger.kernel.org,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Carlos O'Donell <carlos@redhat.com>,
        adhemerval.zanella@linaro.org
Subject: Re: RFC: userspace exception fixups
Message-ID: <20181109071259.GA14784@infradead.org>
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On Thu, Nov 08, 2018 at 12:05:42PM -0800, Andy Lutomirski wrote:
> This whole thing is a mess.  I'm starting to think that the cleanest
> solution would be to provide a way to just tell the kernel that
> certain RIP values have exception fixups.

The bay far cleanest solution would be to say that SGX is sich a mess
that we are not going to support it at all.  It's not like it is a must
have a feature to start with.