diff options
| author | Ian Moffett <ian@osmora.org> | 2024-03-13 21:20:25 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-03-13 21:24:19 -0400 |
| commit | 10e2fc7e3c6a924923664cf2919393b7f7b37326 (patch) | |
| tree | b952c4570d71e9db3cd1b41a33a419a779856be0 /sys/arch | |
| parent | 2cfcba7e6ed64a00ca01dcc7247ecfc5edacfdb2 (diff) | |
kernel/amd64: spectre: Log only once
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/arch')
| -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 */ |