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Tag Archives: gcc

Kernel – GCC and ‘Retpoline’..

Adventures With Linux ™ Posted on February 1, 2018 by RGFebruary 1, 2018

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 Fedora (Rawhide) GCC 7.3.1 for Fedora 27, and it gives the following, after Kernel 4.15 compilation/boot: ~]$ … Continue reading →

Posted in compilation, gcc, Intel, kernel, Linux, Performance, retpoline | Tagged 7.3.1, backport, gcc, kernel, linux, mitigation, retpoline, spectre2 | Leave a reply

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

Adventures With Linux ™ Posted on March 10, 2015 by RGMarch 10, 2015

I had been using the armv7hl-mandriva-linux-gnueabi- cross-compiler, but that gcc version is a bit out-of-date now (version 4.6.1).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:  http://rpmfind.net//linux/RPM/fedora/updates/testing/21/x86_64/g/gcc-arm-linux-gnu-4.9.2-3.fc21.x86_64.html 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 prvide the rest of the cross-compile environment. It should be noted that this is only suitable for … Continue reading →

Posted in compilation, Fedora, kernel, Linux, Linux / ARM | Tagged arm, cross-compiler, gcc, gcc 4.9.2, gnueabi, linux, success, x86_64 | Leave a reply
Original content © Robert Gadsdon 2013
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