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| author |   Michael Cree <mcree@orcon.net.nz> | 2018-02-26 22:02:12 +1300 |
|---|---|---|
| committer |   Matt Turner <mattst88@gmail.com> | 2018-04-07 15:04:04 -0700 |
| commit | 6fd16ce5590e30d0ed8b21e977102361ff9f92ef (patch) | |
| tree | 5f785735470f60b11bc8191c6431fea4c5d67e17 /arch/alpha/Kconfig | |
| parent | alpha: rtc: stop validating rtc_time in .read_time (diff) | |
| download | linux-dev-6fd16ce5590e30d0ed8b21e977102361ff9f92ef.tar.xz linux-dev-6fd16ce5590e30d0ed8b21e977102361ff9f92ef.zip | |
alpha: Implement CPU vulnerabilities sysfs functions.
Implement the CPU vulnerabilty show functions for meltdown, spectre_v1
and spectre_v2 on Alpha.
Tests on XP1000 (EV67/667MHz) and ES45 (EV68CB/1.25GHz) show them
to be vulnerable to Meltdown and Spectre V1. In the case of
Meltdown I saw a 1 to 2% success rate in reading bytes on the
XP1000 and 50 to 60% success rate on the ES45. (This compares to
99.97% success reported for Intel CPUs.) Report EV6 and later
CPUs as vulnerable.
Tests on PWS600au (EV56/600MHz) for Spectre V1 attack were
unsuccessful (though I did not try particularly hard) so mark EV4
through to EV56 as not vulnerable.
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Matt Turner <mattst88@gmail.com>
Diffstat (limited to 'arch/alpha/Kconfig')
| -rw-r--r-- | arch/alpha/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig index e96adcbcab41..b2022885ced8 100644 --- a/arch/alpha/Kconfig +++ b/arch/alpha/Kconfig @@ -18,6 +18,7 @@ config ALPHA select ARCH_HAVE_NMI_SAFE_CMPXCHG select AUDIT_ARCH select GENERIC_CLOCKEVENTS + select GENERIC_CPU_VULNERABILITIES select GENERIC_SMP_IDLE_THREAD select GENERIC_STRNCPY_FROM_USER select GENERIC_STRNLEN_USER |