glibc 2.21 - Machine maintainers, please test your machines.
Commit Message
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.
H.J.
---
From 059790c6162a6a25e9949424d6ca722e4bb4db91 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 number 0x4A/0x4D as Silvermont
* sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
Treat model number 0x4A/0x4D as Intel Silvermont architecture.
---
ChangeLog | 5 +++++
sysdeps/x86_64/multiarch/init-arch.c | 2 ++
2 files changed, 7 insertions(+)
@@ -1,5 +1,10 @@
2015-01-23 H.J. Lu <hongjiu.lu@intel.com>
+ * sysdeps/x86_64/multiarch/init-arch.c (__init_cpu_features):
+ Treat model number 0x4A/0x4D as Intel Silvermont architecture.
+
+2015-01-23 H.J. Lu <hongjiu.lu@intel.com>
+
[BZ #17870]
* nptl/sem_post.c (__new_sem_post): Replace unsigned long int
with uint64_t.
@@ -79,6 +79,8 @@ __init_cpu_features (void)
break;
case 0x37:
+ case 0x4A:
+ case 0x4D:
/* Unaligned load versions are faster than SSSE3
on Silvermont. */
#if index_Fast_Unaligned_Load != index_Prefer_PMINUB_for_stringop