Bug#970699: linux: Enable amd_energy driver
On Fri, 2020-11-13 at 14:56 +0100, Salvatore Bonaccorso wrote: > If we are going to enable this for our builds, then we might need to > check that https://bugzilla.redhat.com/show_bug.cgi?id=1897402 is not > opened accordingly. > > This relates to > > https://support.lenovo.com/lu/uk/product_security/LEN-50481 > > and probably the reason for > > https://lore.kernel.org/stable/238e3cf7-582f-a265-5300-9b4494810...@roeck-us.net/T/#m11dee15be8c238d8858aafdf1a57e9ad7e0b9670 Thanks for the response! I skimmed through the paper covering the CVE and they mostly focused on Intel SGX and only touched upon AMD briefly. They did there measurements with disabled boost and fixed frequency, a configuration that no system in the wild actually uses. Moreover the energy counters are exposed as an MSR, so in my opinion this is more of a CPU-level bug. Personally I feel like recent security efforts are often crippling usability for negligible gains. Just my two cents! signature.asc Description: This is a digitally signed message part
Bug#970699: linux: Enable amd_energy driver
Hi, On Tue, Sep 22, 2020 at 12:23:35AM +0200, David Schiller wrote: > Source: linux > Severity: wishlist > X-Debbugs-Cc: david.schil...@gmx.at > > Hi! > > Could you please enable CONFIG_SENSORS_AMD_ENERGY as a module. This > provides RAPL energy monitoring on AMD Zen processors and has been > available since kernel 5.8. If we are going to enable this for our builds, then we might need to check that https://bugzilla.redhat.com/show_bug.cgi?id=1897402 is not opened accordingly. This relates to https://support.lenovo.com/lu/uk/product_security/LEN-50481 and probably the reason for https://lore.kernel.org/stable/238e3cf7-582f-a265-5300-9b4494810...@roeck-us.net/T/#m11dee15be8c238d8858aafdf1a57e9ad7e0b9670 Regards, Salvatore
Bug#970699: linux: Enable amd_energy driver
Source: linux Severity: wishlist X-Debbugs-Cc: david.schil...@gmx.at Hi! Could you please enable CONFIG_SENSORS_AMD_ENERGY as a module. This provides RAPL energy monitoring on AMD Zen processors and has been available since kernel 5.8. Thanks in advance! Dave -- System Information: Debian Release: bullseye/sid APT prefers testing APT policy: (500, 'testing'), (1, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 5.8.0-1-amd64 (SMP w/24 CPU threads) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled