From: Christopher Lameter <cl@linux.com>
To: Boris Lukashev <blukashev@sempervictus.com>
Cc: "Ingo Molnar" <mingo@kernel.org>,
"Thomas Garnier" <thgarnie@google.com>,
"Herbert Xu" <herbert@gondor.apana.org.au>,
"David S . Miller" <davem@davemloft.net>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Ingo Molnar" <mingo@redhat.com>,
"H . Peter Anvin" <hpa@zytor.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Josh Poimboeuf" <jpoimboe@redhat.com>,
"Arnd Bergmann" <arnd@arndb.de>,
"Matthias Kaehlcke" <mka@chromium.org>,
"Boris Ostrovsky" <boris.ostrovsky@oracle.com>,
"Juergen Gross" <jgross@suse.com>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Joerg Roedel" <joro@8bytes.org>,
"Tom Lendacky" <thomas.lendacky@amd.com>,
"Andy Lutomirski" <luto@kernel.org>,
"Borislav Petkov" <bp@suse.de>, "Brian Gerst" <brgerst@gmail.com>,
"Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Subject: Re: Re: x86: PIE support and option to extend KASLR randomization
Date: Fri, 25 Aug 2017 10:38:18 -0500 (CDT) [thread overview]
Message-ID: <alpine.DEB.2.20.1708251036150.5830@nuc-kabylake> (raw)
In-Reply-To: <CAFUG7CdUEFYANSGRuNX0Xt1TJ0Z7f+M_ERgR03dUVxVqLENLpw@mail.gmail.com>
On Thu, 17 Aug 2017, Boris Lukashev wrote:
> Is the expectation then to have security functions also decrease size
> and operational latency? Seems a bit unrealistic if so.
> 1-2% performance hit on systems which have become at least several
> hundred % faster over recent years is not a significant performance
> regression compared to the baseline before.
Where do you get these fantastic numbers? Where can I buy a system like
that? Commonly we see regressions with single threaded integer
performance on most newer processor generations.
These hundreds of percent improvement can only come from floating point
performance using specialized instructions. There are only a very limited
number of applications that can make use of it.
next prev parent reply other threads:[~2017-08-25 15:38 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-10 17:25 x86: PIE support and option to extend KASLR randomization Thomas Garnier
2017-08-10 17:25 ` [RFC v2 01/23] x86/crypto: Adapt assembly for PIE support Thomas Garnier
2017-08-10 17:25 ` [RFC v2 02/23] x86: Use symbol name on bug table " Thomas Garnier
2017-08-10 17:25 ` [RFC v2 03/23] x86: Use symbol name in jump " Thomas Garnier
2017-08-10 17:25 ` [RFC v2 04/23] x86: Add macro to get symbol address " Thomas Garnier
2017-08-10 17:25 ` [RFC v2 05/23] xen: Adapt assembly " Thomas Garnier
2017-08-10 17:25 ` [RFC v2 06/23] kvm: " Thomas Garnier
2017-08-10 17:25 ` [RFC v2 07/23] x86: relocate_kernel - " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 08/23] x86/entry/64: " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 09/23] x86: pm-trace - " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 10/23] x86/CPU: " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 11/23] x86/acpi: " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 12/23] x86/boot/64: " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 13/23] x86/power/64: " Thomas Garnier
2017-08-11 12:36 ` Pavel Machek
2017-08-11 15:09 ` Thomas Garnier
2017-08-10 17:26 ` [RFC v2 14/23] x86/paravirt: " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 15/23] x86/boot/64: Use _text in a global " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 16/23] x86/percpu: Adapt percpu " Thomas Garnier
2017-08-10 17:26 ` [RFC v2 17/23] compiler: Option to default to hidden symbols Thomas Garnier
2017-08-10 17:26 ` [RFC v2 18/23] x86/relocs: Handle DYN relocations for PIE support Thomas Garnier
2017-08-10 17:26 ` [RFC v2 19/23] x86: Support global stack cookie Thomas Garnier
2017-08-10 17:26 ` [RFC v2 20/23] x86/pie: Add option to build the kernel as PIE for x86_64 Thomas Garnier
2017-08-10 17:26 ` [RFC v2 21/23] x86/relocs: Add option to generate 64-bit relocations Thomas Garnier
2017-08-10 17:26 ` [RFC v2 22/23] x86/module: Add support for mcmodel large and PLTs Thomas Garnier
2017-08-10 17:26 ` [RFC v2 23/23] x86/kaslr: Add option to extend KASLR range from 1GB to 3GB Thomas Garnier
2017-08-11 12:41 ` x86: PIE support and option to extend KASLR randomization Ingo Molnar
2017-08-11 15:09 ` Thomas Garnier
2017-08-15 7:56 ` Ingo Molnar
2017-08-15 14:20 ` Thomas Garnier
2017-08-15 14:47 ` Daniel Micay
2017-08-15 14:58 ` Thomas Garnier
2017-08-16 15:12 ` Ingo Molnar
2017-08-16 16:09 ` Christopher Lameter
2017-08-16 16:26 ` Daniel Micay
2017-08-16 16:32 ` Ard Biesheuvel
2017-08-16 16:57 ` Thomas Garnier
2017-08-17 8:09 ` Ingo Molnar
2017-08-17 14:10 ` Thomas Garnier
2017-08-24 21:13 ` Thomas Garnier
2017-08-24 21:42 ` Linus Torvalds
2017-08-25 15:35 ` Thomas Garnier
2017-08-25 1:07 ` Steven Rostedt
2017-08-25 8:04 ` Ingo Molnar
2017-08-25 15:05 ` Thomas Garnier
2017-08-29 19:34 ` Thomas Garnier
2017-09-21 15:59 ` Ingo Molnar
2017-09-21 16:10 ` Ard Biesheuvel
2017-09-21 21:21 ` Thomas Garnier
2017-09-22 4:24 ` Markus Trippelsdorf
2017-09-22 14:38 ` Thomas Garnier
2017-09-22 23:55 ` Thomas Garnier
2017-09-21 21:16 ` Thomas Garnier
2017-09-22 0:06 ` Thomas Garnier
2017-09-22 16:32 ` Ingo Molnar
2017-09-22 18:08 ` Thomas Garnier
2017-09-23 9:43 ` Ingo Molnar
2017-10-02 20:28 ` Thomas Garnier
2017-09-22 18:38 ` H. Peter Anvin
2017-09-22 18:57 ` Kees Cook
2017-09-22 19:06 ` H. Peter Anvin
2017-09-22 18:59 ` Thomas Garnier
2017-09-23 9:49 ` Ingo Molnar
2017-08-17 14:12 ` Boris Lukashev
2017-08-25 15:38 ` Christopher Lameter [this message]
2017-08-27 22:39 ` Boris Lukashev
2017-08-28 9:59 ` Pavel Machek
2017-08-21 13:32 ` Peter Zijlstra
2017-08-21 14:28 ` Peter Zijlstra
2017-09-22 18:27 ` H. Peter Anvin
2017-09-23 10:00 ` Ingo Molnar
2017-09-24 22:37 ` Pavel Machek
2017-09-25 7:33 ` Ingo Molnar
2017-10-06 10:39 ` Pavel Machek
2017-10-20 8:13 ` Ingo Molnar
2017-08-21 14:31 ` Peter Zijlstra
2017-08-21 15:57 ` Thomas Garnier
2017-08-28 1:26 ` H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2017-07-18 22:33 Thomas Garnier
2017-07-19 14:08 ` Christopher Lameter
2017-07-19 19:21 ` Kees Cook
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