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syscall fixes

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Marvin
2026-10-12 19:05:42 +02:00
parent bc5f01dab6
commit 060983bbf6
5 changed files with 16 additions and 9 deletions
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arch/x86_64/percpu.c
+3 -2
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@@ -66,10 +66,11 @@ void x86_64_cpu_setup(struct percpu* cpu) {
asm_wrmsr(MSR_EFER, asm_rdmsr(MSR_EFER) | MSR_EFER_SCE);
union ia32_star star = {0};
star.kernel_cs_ss = offsetof(struct gdt, kernel_code64);
star.user_cs_ss = offsetof(struct gdt, user_code32);
star.user_cs_ss = offsetof(struct gdt, user_code32) | CPL_USER;
asm_wrmsr(MSR_STAR, star.value);
asm_wrmsr(MSR_LSTAR, (uint64_t)arch_syscall_stub);
asm_wrmsr(MSR_SFMASK, RFLAGS_AC | RFLAGS_DF | RFLAGS_IF);
// Mask all RFLAGS except for BRKI which is reserved.
asm_wrmsr(MSR_SFMASK, ~RFLAGS_BRKI);
// TODO: FRED