Kernel – GCC and ‘Retpoline’..

The recent summary of Kernel 4.15 mentioned the test for ‘compliant’ versions of GCC which fully support the retpoline mitigation, but only gave an example of non-compliance: With GCC 7.2: ~]$ cat /sys/devices/system/cpu/vulnerabilities/spectre_v2  Vulnerable: Minimal generic ASM retpoline I re-created … Continue reading

ARM / x86_64 – A More Recent Cross-Compiler..

I had been using the armv7hl-mandriva-linux-gnueabi- cross-compiler, but that gcc version is a bit out-of-date now (version 4.6.1). I found a more recent version, for Fedora, here: Using yum, this will also install binutils-arm-linux-gnu-2.25-3.fc21.x86_64 and cross-gcc-common-4.9.2-3.fc21.noarch and cross-binutils-common-2.25-3.fc21.noarch, to … Continue reading