H. Peter Anvin 8b9b3bf4e7 x86, random: Verify RDRAND functionality and allow it to be disabled ...

commit 49d859d78c upstream.

If the CPU declares that RDRAND is available, go through a guranteed
reseed sequence, and make sure that it is actually working (producing
data.)   If it does not, disable the CPU feature flag.

Allow RDRAND to be disabled on the command line (as opposed to at
compile time) for a user who has special requirements with regards to
random numbers.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Matt Mackall <mpm@selenic.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-10-21 09:17:12 -07:00

..

mcheck

MCE: Fix vm86 handling for 32bit mce handler

2012-10-02 09:47:55 -07:00

mtrr

x86, mtrr: lock stop machine during MTRR rendezvous sequence

2011-08-29 13:29:08 -07:00

.gitignore

…

amd.c

x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'

2012-08-15 12:04:09 -07:00

bugs_64.c

x86/cpu: Clean up various files a bit

2009-07-11 11:24:09 +02:00

bugs.c

x86 idle: deprecate "no-hlt" cmdline param

2011-05-29 03:39:16 -04:00

centaur.c

x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes

2009-11-23 11:59:53 -08:00

common.c

x86, random: Verify RDRAND functionality and allow it to be disabled

2012-10-21 09:17:12 -07:00

cpu.h

Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

2010-10-21 13:18:36 -07:00

cyrix.c

x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes

2009-11-23 11:59:53 -08:00

hypervisor.c

Introduce CONFIG_XEN_PVHVM compile option

2010-07-29 11:11:33 -07:00

intel_cacheinfo.c

x86/amd: Fix L1i and L2 cache sharing information for AMD family 15h processors

2012-02-29 16:34:27 -08:00

intel.c

x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'

2012-08-15 12:04:09 -07:00

Makefile

x86, random: Verify RDRAND functionality and allow it to be disabled

2012-10-21 09:17:12 -07:00

mkcapflags.pl

…

mshyperv.c

x86: Export the symbol ms_hyperv

2010-07-08 14:12:03 -07:00

perf_event_amd.c

perf/x86: Update event scheduling constraints for AMD family 15h models

2012-06-01 15:12:54 +08:00

perf_event_intel_ds.c

perf/x86: Fix PEBS instruction unwind

2011-12-09 08:52:44 -08:00

perf_event_intel_lbr.c

perf, x86: Clean up debugctlmsr bit definitions

2010-03-26 09:41:03 +01:00

perf_event_intel.c

perf, x86: Add model 45 SandyBridge support

2011-10-03 11:40:49 -07:00

perf_event_p4.c

Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/core

2011-05-01 19:09:39 +02:00

perf_event_p6.c

perf, x86: Store perfctr msr addresses in config_base/event_base

2011-02-16 13:30:52 +01:00

perf_event.c

x86, perf: Check that current->mm is alive before getting user callchain

2011-10-03 11:40:09 -07:00

perfctr-watchdog.c

perf, x86: Add new AMD family 15h msrs to perfctr reservation code

2011-02-16 13:30:50 +01:00

powerflags.c

…

proc.c

x86: Simplify code by removing a !SMP #ifdefs from 'struct cpuinfo_x86'

2012-08-15 12:04:09 -07:00

rdrand.c

x86, random: Verify RDRAND functionality and allow it to be disabled

2012-10-21 09:17:12 -07:00

scattered.c

x86, cpufeature: Rename X86_FEATURE_DTS to X86_FEATURE_DTHERM

2012-07-16 08:47:51 -07:00

sched.c

sched: x86: Name old_perf in a unique way

2009-09-16 11:21:07 +02:00

topology.c

x86, cpu: Split addon_cpuid_features.c

2010-07-19 19:02:41 -07:00

transmeta.c

x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes

2009-11-23 11:59:53 -08:00

umc.c

…

vmware.c

x86: Fix common misspellings

2011-03-18 10:39:30 +01:00