From: David S. Miller <davem@davemloft.net>
Date: Thu, 16 Aug 2012 23:41:04 +0000 (-0700)
Subject: sparc64: Add detection for features new in SPARC-T4.
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~48^2~46
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f859c0e96f0737a543610a189d12420c569110f;p=pandora-kernel.git

sparc64: Add detection for features new in SPARC-T4.

Compare and branch, pause, and the various new cryptographic opcodes.

We advertise the crypto opcodes to userspace using one hwcap bit,
HWCAP_SPARC_CRYPTO.

This essentially indicates that the %cfr register can be interrograted
and used to determine exactly which crypto opcodes are available on
the current cpu.

We use the %cfr register to report all of the crypto opcodes available
in the bootup CPU caps log message, and via /proc/cpuinfo.

Signed-off-by: David S. Miller <davem@davemloft.net>
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