diff options
Diffstat (limited to 'usr/src/uts/i86pc/os/mlsetup.c')
| -rw-r--r-- | usr/src/uts/i86pc/os/mlsetup.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/usr/src/uts/i86pc/os/mlsetup.c b/usr/src/uts/i86pc/os/mlsetup.c index 8cb56d9682..045adbcb7b 100644 --- a/usr/src/uts/i86pc/os/mlsetup.c +++ b/usr/src/uts/i86pc/os/mlsetup.c @@ -269,7 +269,10 @@ mlsetup(struct regs *rp) (void) wrmsr(MSR_AMD_TSCAUX, 0); /* - * Let's get the other %cr4 stuff while we're here. + * Let's get the other %cr4 stuff while we're here. Note, we defer + * enabling CR4_SMAP until startup_end(); however, that's importantly + * before we start other CPUs. That ensures that it will be synced out + * to other CPUs. */ if (is_x86_feature(x86_featureset, X86FSET_DE)) setcr4(getcr4() | CR4_DE); |