On Mon, Jan 29, 2018 at 7:50 PM, Ian Zimmerman <i...@very.loosely.org> wrote: > On 2018-01-29 20:11, Adam Carter wrote: > >> Comparing the contents of /sys/devices/system/cpu/vulnerabilities/spectre_v2 >> >> With gcc 7.2 + kernel 4.14.15; >> Intel system shows; Vulnerable: Minimal generic ASM retpoline >> AMD system shows: Vulnerable: Minimal AMD ASM retpoline >> >> With gcc 7.3 + kernel 4.15.0; >> Intel system shows; Mitigation: Full generic retpoline >> AMD system shows' Mitigation: Full AMD retpoline > > Is there a simple way, with the upstream (kernel.org) sources, to force > a compiler different from the system default? If there is, it's not in the > README, and a simple grep over the Makefiles also doesn't enlighten. > > I am not ready to activate a keyworded gcc for general use. > > -- > Please don't Cc: me privately on mailing lists and Usenet, > if you also post the followup to the list or newsgroup. > To reply privately _only_ on Usenet, fetch the TXT record for the domain. >
To compile the kernel with a different compiler, the method shown below may be used, e.g.: make CC=clang See [1], for details: Building the kernel with Clang: [1] https://lwn.net/Articles/734071/
