diff options
Diffstat (limited to 'sys/arch/amd64/amd64/machdep.c')
| -rw-r--r-- | sys/arch/amd64/amd64/machdep.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sys/arch/amd64/amd64/machdep.c b/sys/arch/amd64/amd64/machdep.c index 275c23e..983a480 100644 --- a/sys/arch/amd64/amd64/machdep.c +++ b/sys/arch/amd64/amd64/machdep.c @@ -34,6 +34,7 @@ #include <machine/trap.h> #include <machine/asm.h> #include <machine/cpuid.h> +#include <machine/lapic.h> #if defined(__SPECTRE_IBRS) #define SPECTRE_IBRS __SPECTRE_IBRS @@ -76,6 +77,16 @@ try_mitigate_spectre(void) ibrs_enable(); } +/* + * Get the descriptor for the currently + * running processor. + */ +struct cpu_info * +this_cpu(void) +{ + return (void *)amd64_read_gs_base(); +} + void cpu_startup(void) { @@ -84,5 +95,7 @@ cpu_startup(void) setup_vectors(); amd64_write_gs_base((uintptr_t)&g_bsp_ci); + try_mitigate_spectre(); + lapic_init(); } |