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PING^1: V5 [PATCH 0/2] Add <sys/platform/x86.h>
- From: "H.J. Lu" <hjl dot tools at gmail dot com>
- To: GNU C Library <libc-alpha at sourceware dot org>
- Cc: Florian Weimer <fweimer at redhat dot com>
- Date: Fri, 5 Oct 2018 08:54:43 -0700
- Subject: PING^1: V5 [PATCH 0/2] Add <sys/platform/x86.h>
- References: <20180927194327.7683-1-hjl.tools@gmail.com>
On Thu, Sep 27, 2018 at 12:43 PM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> Add <sys/platform/x86.h> to provide an API to access x86 specific platform
> features. It makes raw and derived CPUID information available to
> applications so that programmers can avoid complicated steps to retrieve
> the same information with CPUID instructions. 2 macros are provided to
> query x86 platform features:
>
> 1. HAS_CPU_FEATURE evaluates to true if CPU supports the feature.
> 2. CPU_FEATURE_USABLE evaluates to true if the feature is usable.
>
> They can be used in IFUNC resolvers, including in LD_PRELOAD shared
> objects.
>
>
> H.J. Lu (2):
> x86: Add <sys/platform/x86.h>
> x86: Add a LD_PRELOAD IFUNC resolver test for CPU_FEATURE_USABLE
>
> NEWS | 3 +
> manual/platform.texi | 458 +++++++++++
> sysdeps/mach/hurd/i386/ld.abilist | 2 +
> sysdeps/unix/sysv/linux/i386/ld.abilist | 2 +
> sysdeps/unix/sysv/linux/x86_64/64/ld.abilist | 2 +
> sysdeps/unix/sysv/linux/x86_64/x32/ld.abilist | 2 +
> sysdeps/x86/Makefile | 23 +-
> sysdeps/x86/Versions | 3 +
> sysdeps/x86/cpu-features.c | 97 ++-
> sysdeps/x86/cpu-features.h | 234 ++----
> sysdeps/x86/dl-get-cpu-features.c | 19 +
> sysdeps/x86/sys/platform/x86.h | 755 ++++++++++++++++++
> sysdeps/x86/tst-get-cpu-features.c | 29 +-
> sysdeps/x86/tst-x86-platform-1-static.c | 1 +
> sysdeps/x86/tst-x86-platform-1.c | 254 ++++++
> sysdeps/x86/tst-x86-platform-2.c | 27 +
> sysdeps/x86/tst-x86-platform-3.c | 27 +
> sysdeps/x86/tst-x86-platform-4.c | 54 ++
> sysdeps/x86/tst-x86-platform-mod-2.c | 2 +
> sysdeps/x86/tst-x86-platform-mod-3.c | 2 +
> sysdeps/x86/tst-x86-platform-mod-4.c | 37 +
> sysdeps/x86/tst-x86-platform-preload-4.c | 62 ++
> sysdeps/x86_64/multiarch/sched_cpucount.c | 2 +-
> sysdeps/x86_64/multiarch/test-multiarch.c | 4 +-
> 24 files changed, 1889 insertions(+), 212 deletions(-)
> create mode 100644 sysdeps/x86/sys/platform/x86.h
> create mode 100644 sysdeps/x86/tst-x86-platform-1-static.c
> create mode 100644 sysdeps/x86/tst-x86-platform-1.c
> create mode 100644 sysdeps/x86/tst-x86-platform-2.c
> create mode 100644 sysdeps/x86/tst-x86-platform-3.c
> create mode 100644 sysdeps/x86/tst-x86-platform-4.c
> create mode 100644 sysdeps/x86/tst-x86-platform-mod-2.c
> create mode 100644 sysdeps/x86/tst-x86-platform-mod-3.c
> create mode 100644 sysdeps/x86/tst-x86-platform-mod-4.c
> create mode 100644 sysdeps/x86/tst-x86-platform-preload-4.c
>
PING:
https://sourceware.org/ml/libc-alpha/2018-09/msg00510.html
https://sourceware.org/ml/libc-alpha/2018-09/msg00509.html
--
H.J.