From 627c047d1ce71c9882cefac41a0d0b3c9d379c5b Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Sat, 5 Jul 2025 01:03:23 +0000 Subject: kernel/amd64: Add 'feat' field in cpu_info Keep track of per-cpu features by using a 'feat' field which contains the results of various CPUIDs. Signed-off-by: Ian Moffett --- sys/include/arch/amd64/cpu.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'sys/include') diff --git a/sys/include/arch/amd64/cpu.h b/sys/include/arch/amd64/cpu.h index 2d08d6e..fe8fc8a 100644 --- a/sys/include/arch/amd64/cpu.h +++ b/sys/include/arch/amd64/cpu.h @@ -38,8 +38,13 @@ #define CPU_IRQ(IRQ_N) (BIT((IRQ_N)) & 0xFF) +/* Feature bits */ +#define CPU_FEAT_SMAP BIT(0) +#define CPU_FEAT_SMEP BIT(1) + struct cpu_info { uint32_t apicid; + uint32_t feat; uint8_t has_x2apic : 1; uint8_t tlb_shootdown : 1; uint8_t ipl; -- cgit v1.2.3