From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Peter Anvin" Subject: Re: [PATCH v4 0/5] x86: two-phase syscall tracing and seccomp fastpath Date: Thu, 31 Jul 2014 09:56:48 -0700 Message-ID: <53DA7550.40905@zytor.com> References: <20140729192056.GA6308@redhat.com> <20140730165940.GB27954@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-subscribe: List-owner: List-post: List-archive: To: Andy Lutomirski , Frederic Weisbecker Cc: Oleg Nesterov , linux-arch , X86 ML , LSM List , Linux MIPS Mailing List , "linux-arm-kernel@lists.infradead.org" , Alexei Starovoitov , Will Drewry , Kees Cook , "linux-kernel@vger.kernel.org" List-Id: linux-arch.vger.kernel.org On 07/30/2014 10:25 AM, Andy Lutomirski wrote: > > And yet x86_64 has this code implemented in assembly even in the > slowpath. Go figure. > There is way too much assembly in entry_64.S probably because things have been grafted on, ahem, "organically". It is darn nigh impossible to even remotely figure out what goes on in that file. -hpa From mboxrd@z Thu Jan 1 00:00:00 1970 From: hpa@zytor.com (H. Peter Anvin) Date: Thu, 31 Jul 2014 09:56:48 -0700 Subject: [PATCH v4 0/5] x86: two-phase syscall tracing and seccomp fastpath In-Reply-To: References: <20140729192056.GA6308@redhat.com> <20140730165940.GB27954@localhost.localdomain> Message-ID: <53DA7550.40905@zytor.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 07/30/2014 10:25 AM, Andy Lutomirski wrote: > > And yet x86_64 has this code implemented in assembly even in the > slowpath. Go figure. > There is way too much assembly in entry_64.S probably because things have been grafted on, ahem, "organically". It is darn nigh impossible to even remotely figure out what goes on in that file. -hpa