glibc 2.21 - Machine maintainers, please test your machines.

On Fri, Jan 23, 2015 at 06:10:10PM -0800, H.J. Lu wrote:
> On Fri, Jan 23, 2015 at 05:40:16PM -0800, H.J. Lu wrote:
> > On Fri, Jan 23, 2015 at 04:36:51PM -0800, H.J. Lu wrote:
> > > On Fri, Jan 23, 2015 at 1:32 PM, Carlos O'Donell <carlos@redhat.com> wrote:
> > > > Dear Machine Maintainers,
> > > >
> > > > Please start testing your machines against glibc
> > > > master.
> > > >
> > > > Please update the glibc 2.21 release page with your
> > > > testing results:
> > > >
> > > > https://sourceware.org/glibc/wiki/Release/2.21
> > > >
> > > > If nobody objects I want to cut the release as soon
> > > > as we have results for all the machines.
> > > >
> > > 
> > > We need to update __init_cpu_features in
> > > sysdeps/x86_64/multiarch/init-arch.c to support the current
> > > Intel processors.
> > > 
> > > Andrew, please find out the model numbers for the current
> > > Ivy Bridge, Haswell, Broadwell and Silvermont server, desktop
> > > and mobile processors.
> > > 
> > > 
> > 
> > We only need to deal with Silvermont since Ivy Bridge, Haswell and
> > Broadwell, which have AVX, are treated as Core i7.  The new Silvermont
> > model numbers are in
> > 
> > http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-optimization-manual.pdf
> > 
> > I am testing this patch and I will check it in shortly.
> > 
> 
> This is what I checked in. Andrew, please check if it works on your
> Silvermont machine.
> 
> 
> H.J.
> ---
> From d37d432b715cefb695c09b41676338f25a91d30f Mon Sep 17 00:00:00 2001
> From: "H.J. Lu" <hjl.tools@gmail.com>
> Date: Fri, 23 Jan 2015 17:27:09 -0800
> Subject: [PATCH] Treat model numbers 0x4a/0x4d as Silvermont
> 
> 	* sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
> 	Treat model numbers 0x4a/0x4d as Intel Silvermont architecture.

There are more Silvermont model numbers in CHAPTER 35 MODEL-SPECIFIC
REGISTERS (MSRS):

http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-system-programming-manual-325384.pdf

I checked in the enclosed patch.

H.J.
---
From 972af9e8ddd870cabf8aad39b28a6e352c9cc79c Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 23 Jan 2015 18:52:45 -0800
Subject: [PATCH] Also treat model numbers 0x5a/0x5d as Silvermont

---
 ChangeLog                            | 3 ++-
 sysdeps/x86_64/multiarch/init-arch.c | 2 ++
 2 files changed, 4 insertions(+), 1 deletion(-)

> On Fri, Jan 23, 2015 at 06:10:10PM -0800, H.J. Lu wrote:
> > On Fri, Jan 23, 2015 at 05:40:16PM -0800, H.J. Lu wrote:
> > > On Fri, Jan 23, 2015 at 04:36:51PM -0800, H.J. Lu wrote:
> > > > On Fri, Jan 23, 2015 at 1:32 PM, Carlos O'Donell <carlos@redhat.com> wrote:
> > > > > Dear Machine Maintainers,
> > > > >
> > > > > Please start testing your machines against glibc master.
> > > > >
> > > > > Please update the glibc 2.21 release page with your testing
> > > > > results:
> > > > >
> > > > > https://sourceware.org/glibc/wiki/Release/2.21
> > > > >
> > > > > If nobody objects I want to cut the release as soon as we have
> > > > > results for all the machines.
> > > > >
> > > >
> > > > We need to update __init_cpu_features in
> > > > sysdeps/x86_64/multiarch/init-arch.c to support the current Intel
> > > > processors.
> > > >
> > > > Andrew, please find out the model numbers for the current Ivy
> > > > Bridge, Haswell, Broadwell and Silvermont server, desktop and
> > > > mobile processors.
> > > >
> > > >
> > >
> > > We only need to deal with Silvermont since Ivy Bridge, Haswell and
> > > Broadwell, which have AVX, are treated as Core i7.  The new
> > > Silvermont model numbers are in
> > >
> > > http://www.intel.com/content/dam/www/public/us/en/documents/manuals/
> > > 64-ia-32-architectures-optimization-manual.pdf
> > >
> > > I am testing this patch and I will check it in shortly.
> > >
> >
> > This is what I checked in. Andrew, please check if it works on your
> > Silvermont machine.

Thank you H.J., now it works on Silvermont machine.


--
Andrew