From: Andi Kleen <ak@linux.intel.com>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Pavel Emelyanov <xemul@parallels.com>,
Andy Lutomirski <luto@amacapital.net>,
Ingo Molnar <mingo@redhat.com>,
Cyrill Gorcunov <gorcunov@openvz.org>,
Stefani Seibold <stefani@seibold.net>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>,
Andrea Arcangeli <aarcange@redhat.com>,
Andreas Brief <Andreas.Brief@rohde-schwarz.com>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Martin Runge <Martin.Runge@rohde-schwarz.com>,
the arch/x86 maintainers <x86@kernel.org>
Subject: Re: [PATCH 3/3] x86, vdso32: handle 32 bit vDSO larger one page
Date: Thu, 13 Mar 2014 14:00:10 -0700 [thread overview]
Message-ID: <20140313210010.GB3793@tassilo.jf.intel.com> (raw)
In-Reply-To: <53220DEB.6030902@zytor.com>
On Thu, Mar 13, 2014 at 12:58:35PM -0700, H. Peter Anvin wrote:
> On 03/13/2014 12:37 PM, Linus Torvalds wrote:
> > There are big advantages to "minimal code" at fixed addresses. The
> > vdso=native thing fills the page with 0xcc just to not give useful
> > instructions (still on my phone, so that may be a bogus memory)
> >
> > That said, I doubt we care just for OpenSUSE 9. Let it be slower.
>
> Yes.
At some point the majority of my nfsroot test image were OpenSUSE 9.
It was the last opensuse system that booted fast without udev or initrd :-)
I have mostly retired them by now, but still occasional usage.
So that why i would prefer to not cripple it.
-Andi
next prev parent reply other threads:[~2014-03-13 21:01 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-12 22:51 [PATCH 0/3] Improve 32 bit vDSO time Stefani Seibold
2014-03-12 22:51 ` [PATCH 1/3] x86, vdso32: undef CONFIG_OPTIMIZE_INLINING and CONFIG_X86_PPRO_FENCE Stefani Seibold
2014-03-12 22:51 ` [PATCH 2/3] x86, vdso32: remove vsyscall_32.c Stefani Seibold
2014-03-12 22:51 ` [PATCH 3/3] x86, vdso32: handle 32 bit vDSO larger one page Stefani Seibold
2014-03-12 22:58 ` H. Peter Anvin
2014-03-12 22:59 ` Andy Lutomirski
2014-03-13 15:53 ` H. Peter Anvin
2014-03-13 17:28 ` Andy Lutomirski
2014-03-13 18:08 ` H. Peter Anvin
2014-03-13 18:21 ` H. Peter Anvin
2014-03-13 18:32 ` Andy Lutomirski
2014-03-13 19:01 ` H. Peter Anvin
[not found] ` <CA+55aFyOp6V_tE-sXKVi+=6yVwHQb0sLWSNbk=N7KbhBrx9QhA@mail.gmail.com>
[not found] ` <CA+55aFyCSL==4Ff4JT3uFKN_28mz92ef1L67-4OUGqHZ8HXUhg@mail.gmail.com>
2014-03-13 19:13 ` Andy Lutomirski
[not found] ` <CA+55aFwDn3zA0gEn2r3nJVPWuv-pLYyrj4=8_gt1xFTd2g_Dwg@mail.gmail.com>
2014-03-13 19:33 ` H. Peter Anvin
[not found] ` <CA+55aFxWsm=P5h1o=BNrwkcy2ZadFsVxpegxJ0rskPVcmo_Ljw@mail.gmail.com>
2014-03-13 19:58 ` H. Peter Anvin
2014-03-13 21:00 ` Andi Kleen [this message]
2014-03-13 21:04 ` H. Peter Anvin
2014-03-13 21:10 ` Andi Kleen
2014-03-13 21:48 ` Linus Torvalds
2014-03-18 14:22 ` OT: " Hans-Peter Jansen
2014-03-13 19:35 ` Andy Lutomirski
2014-03-12 22:56 ` [PATCH 0/3] Improve 32 bit vDSO time Andy Lutomirski
2014-03-12 23:11 ` stefani
2014-03-13 3:48 ` H. Peter Anvin
2014-03-13 8:11 ` Stefani Seibold
2014-03-13 22:08 ` H. Peter Anvin
2014-03-14 6:24 ` Stefani Seibold
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