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MFi386: correctly calculate the top-of-stack when a kthread is created

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with a larger kernel stack.
This commit is contained in:
Peter Wemm 2004-03-25 03:39:38 +00:00
parent 946a5e675d
commit fc900bcdd2
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=127392
1 changed files with 4 additions and 3 deletions
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7
sys/amd64/amd64/vm_machdep.c
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@ -124,7 +124,8 @@ cpu_fork(td1, p2, td2, flags)
fpuexit(td1);
/* Point the pcb to the top of the stack */
pcb2 = (struct pcb *)(td2->td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
pcb2 = (struct pcb *)(td2->td_kstack +
td2->td_kstack_pages * PAGE_SIZE) - 1;
td2->td_pcb = pcb2;
/* Copy p1's pcb */
@ -247,8 +248,8 @@ void
cpu_thread_setup(struct thread *td)
{
td->td_pcb =
(struct pcb *)(td->td_kstack + KSTACK_PAGES * PAGE_SIZE) - 1;
td->td_pcb = (struct pcb *)(td->td_kstack +
td->td_kstack_pages * PAGE_SIZE) - 1;
td->td_frame = (struct trapframe *)td->td_pcb - 1;
}