Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 26 Jan 2018 14:24:07 +0000
From: Alan Cox <alan@...ux.intel.com>
To: David Laight <David.Laight@...LAB.COM>, 'Andy Lutomirski'
 <luto@...nel.org>,  Linus Torvalds <torvalds@...ux-foundation.org>
Cc: the arch/x86 maintainers <x86@...nel.org>, LKML
 <linux-kernel@...r.kernel.org>, Greg Kroah-Hartman
 <gregkh@...uxfoundation.org>,  Jann Horn <jannh@...gle.com>, Samuel Neves
 <samuel.c.p.neves@...il.com>, Dan Williams <dan.j.williams@...el.com>,
 Kernel Hardening <kernel-hardening@...ts.openwall.com>, Borislav Petkov
 <bp@...en8.de>
Subject: Re: [PATCH] x86/retpoline/entry: Disable the entire SYSCALL64 fast
 path with retpolines on

> NetBSD (and the other BSD?) defines a structure for the arguments to
> each syscall.

Goes back to v7 or so but they put the syscall arguments into the uarea
so that no pointers were needed (uarea being a per process mapping at a
fixed address) in order to also reduce pointer dereferencing costs (not
that those matter much on modern processors)

Alan.

Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.