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Start at the top of the double fault stack, not the bottom.

This commit is contained in:
fvdl 2004-06-16 10:13:46 +00:00
parent f24cbf3372
commit 2c51ec74d3
1 changed files with 4 additions and 3 deletions
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7
sys/arch/amd64/amd64/machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: machdep.c,v 1.28 2004/06/16 10:01:31 fvdl Exp $ */
/* $NetBSD: machdep.c,v 1.29 2004/06/16 10:13:46 fvdl Exp $ */
/*-
* Copyright (c) 1996, 1997, 1998, 2000 The NetBSD Foundation, Inc.
@ -72,7 +72,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.28 2004/06/16 10:01:31 fvdl Exp $");
__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.29 2004/06/16 10:13:46 fvdl Exp $");
#include "opt_user_ldt.h"
#include "opt_ddb.h"
@ -320,7 +320,8 @@ x86_64_proc0_tss_ldt_init(void)
pcb->pcb_cr0 = rcr0();
pcb->pcb_tss.tss_rsp0 = (u_int64_t)lwp0.l_addr + USPACE - 16;
pcb->pcb_tss.tss_ist[0] = (u_int64_t)lwp0.l_addr + PAGE_SIZE;
pcb->pcb_tss.tss_ist[1] = (uint64_t) x86_64_doubleflt_stack;
pcb->pcb_tss.tss_ist[1] = (uint64_t) x86_64_doubleflt_stack
+ PAGE_SIZE - 16;
lwp0.l_md.md_regs = (struct trapframe *)pcb->pcb_tss.tss_rsp0 - 1;
lwp0.l_md.md_tss_sel = tss_alloc(pcb);