diff options
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/amd64/spectre.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/sys/arch/amd64/amd64/spectre.c b/sys/arch/amd64/amd64/spectre.c index 1247607..05aa557 100644 --- a/sys/arch/amd64/amd64/spectre.c +++ b/sys/arch/amd64/amd64/spectre.c @@ -62,13 +62,18 @@ __weak int try_spectre_mitigate(void) { uint64_t tmp; + static bool should_log = true; if (!__can_mitigate_spectre()) { KINFO("IBRS not supported; spectre mitigation NOT enabled\n"); return EXIT_FAILURE; } - KINFO("IBRS supported; spectre mitigation enabled\n"); + /* This is called per processor, only log once */ + if (should_log) { + KINFO("IBRS supported; spectre mitigation enabled\n"); + should_log = false; + } tmp = rdmsr(IA32_SPEC_CTL); tmp |= __BIT(0); /* IBRS */ |