diff options
Diffstat (limited to 'kernel/process.s')
| -rw-r--r-- | kernel/process.s | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/kernel/process.s b/kernel/process.s index caef941..934d627 100644 --- a/kernel/process.s +++ b/kernel/process.s @@ -128,15 +128,13 @@ switch_to_task: mov eax,[esi+TCB.CR3] # eax = address of page directory for next task mov ebx,[esi+TCB.ESP0] # ebx = address for the top of the next task's kernel stack # mov [TSS.ESP0],ebx # Adjust the ESP0 field in the TSS (used by CPU for for CPL=3 -> CPL=0 privilege level changes) -# mov ecx,cr3 # ecx = previous task's virtual address space + mov ecx,cr3 # ecx = previous task's virtual address space -# FIXME: This branch gets a from the assembler, something about "relaxed branches". -# this branch would probably not be used anyway but should be checked on later anyway. -# cmp eax,ecx # Does the virtual address space need to being changed? + cmp eax,ecx # Does the virtual address space need to being changed? -# je .doneVAS # no, virtual address space is the same, so don't reload it and cause TLB flushes + je .doneVAS # no, virtual address space is the same, so don't reload it and cause TLB flushes mov cr3,eax # yes, load the next task's virtual address space -#.doneVAS: +.doneVAS: pop ebp pop edi |