Re: [gentoo-user] gcc 7.3 + kernel 4.15 = spectre_v2 fixed

2018-01-29 Thread Henry Kohli 
Would it be usefull to do a emerge -e @world with the new GCC 7.3 ?

If yes, should we add /-mindirect-branch/, /-mindirect-branch-loop/,
/-mfunction-return/ and /-mindirect-branch-register to the CFLAGS ?/


On 29/01/18 10:11, 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

[gentoo-user] gcc 7.3 + kernel 4.15 = spectre_v2 fixed

2018-01-29 Thread Adam Carter 
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