diff options
| author | Ian Moffett <ian@osmora.org> | 2025-07-05 01:04:58 +0000 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2025-07-05 01:04:58 +0000 |
| commit | 755615ef0b094ca644ada0f677c49e665120ff37 (patch) | |
| tree | 09d2c53b4a236bcf0d11aac2c2e1f6528bbd3812 /sys/include | |
| parent | 627c047d1ce71c9882cefac41a0d0b3c9d379c5b (diff) | |
kernel/amd64: cpu: Support SMEP
Some CPUs support Supervisor Memory Execution Protection that prevent ring 3
code from being executed in a ring 0 context. Enable this on CPUs that
support it.
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include')
| -rw-r--r-- | sys/include/arch/amd64/cpu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h index fe8fc8a..46e5df7 100644 --- a/sys/include/arch/amd64/cpu.h +++ b/sys/include/arch/amd64/cpu.h @@ -61,6 +61,9 @@ __dead void cpu_halt_all(void); void cpu_halt_others(void); void cpu_startup(struct cpu_info *ci); +void cpu_enable_smep(void); +void cpu_disable_smep(void); + struct cpu_info *cpu_get(uint32_t index); uint32_t cpu_count(void); void cpu_shootdown_tlb(vaddr_t va); |