refactor: simplify the vmm design, single responsibility. But using it should with...

[lunaix-os.git] / lunaix-os / kernel / sched.c

diff --git a/lunaix-os/kernel/sched.c b/lunaix-os/kernel/sched.c
index e7bcd9a6d3fc5fb3a7e8b5577e9592f4ab8f8a1c..a93c9bb5e37a87802df17a761039793bca0cb607 100644 (file)
--- a/lunaix-os/kernel/sched.c
+++ b/lunaix-os/kernel/sched.c
@@ -1,12 +1,15 @@
 #include <arch/x86/interrupts.h>
 #include <arch/x86/tss.h>
+
 #include <hal/apic.h>
 #include <hal/cpu.h>
+
 #include <lunaix/mm/kalloc.h>
+#include <lunaix/mm/pmm.h>
 #include <lunaix/mm/vmm.h>
 #include <lunaix/process.h>
 #include <lunaix/sched.h>
-
+#include <lunaix/signal.h>
 #include <lunaix/spike.h>
 #include <lunaix/status.h>
 #include <lunaix/syscall.h>
@@ -28,9 +31,11 @@ void
 sched_init()
 {
     size_t pg_size = ROUNDUP(sizeof(struct proc_info) * MAX_PROCESS, 0x1000);
-    assert_msg(vmm_alloc_pages(
-                 KERNEL_PID, &__proc_table, pg_size, PG_PREM_RW, PP_FGPERSIST),
-               "Fail to allocate proc table");
+
+    for (size_t i = 0; i <= pg_size; i += 4096) {
+        uintptr_t pa = pmm_alloc_page(KERNEL_PID, PP_FGPERSIST);
+        vmm_set_mapping(PD_REFERENCED, &__proc_table + i, pa, PG_PREM_RW);
+    }
 
     sched_ctx = (struct scheduler){ ._procs = (struct proc_info*)&__proc_table,
                                     .ptable_len = 0,
@@ -47,20 +52,10 @@ run(struct proc_info* proc)
 
     // FIXME: 这里还是得再考虑一下。
     // tss_update_esp(__current->intr_ctx.esp);
-
-    if (__current->page_table != proc->page_table) {
-        __current = proc;
-        cpu_lcr3(__current->page_table);
-        // from now on, the we are in the kstack of another process
-    } else {
-        __current = proc;
-    }
-
     apic_done_servicing();
 
     asm volatile("pushl %0\n"
-                 "jmp soft_iret\n" ::"r"(&__current->intr_ctx)
-                 : "memory");
+                 "jmp switch_to\n" ::"r"(proc)); // kernel/asm/x86/interrupt.S
 }
 
 void