Changes in kernel/arch/amd64/src/proc/scheduler.c [1a5eca4:9d58539] in mainline

File:

• kernel/arch/amd64/src/proc/scheduler.c (modified) (2 diffs)

kernel/arch/amd64/src/proc/scheduler.c

@@ -42 +42 @@
 #include <arch/pm.h>
 #include <arch/ddi/ddi.h>
-#include <arch/kseg_struct.h>
 
 /** Perform amd64 specific tasks needed before the new task is run.
@@ -56 +55 @@
 void before_thread_runs_arch(void)
 {
-        CPU->arch.tss->rsp0 = (uintptr_t) &THREAD->kstack[STACK_SIZE];
-
-        kseg_t *kseg = (kseg_t *) read_msr(AMD_MSR_GS_KERNEL);  
-        kseg->kstack_rsp = THREAD->arch.kstack_rsp;
+        CPU->arch.tss->rsp0 =
+            (uintptr_t) &THREAD->kstack[STACK_SIZE];
+        
+        /*
+         * Syscall support.
+         */
+        swapgs();
+        write_msr(AMD_MSR_GS, (uintptr_t) THREAD->arch.syscall_rsp);
+        swapgs();
+        
+        /* TLS support - set FS to thread local storage */
+        write_msr(AMD_MSR_FS, THREAD->arch.tls);
 }