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Ensure that non-primary CPUs save the FPU state on suspend.

This commit is contained in:
joerg 2008-01-14 15:23:56 +00:00
parent b99d735fcb
commit 1726e7b607
1 changed files with 16 additions and 4 deletions
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20
sys/arch/x86/x86/cpu.c
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@ -1,4 +1,4 @@
/* $NetBSD: cpu.c,v 1.16 2008/01/05 21:47:18 yamt Exp $ */
/* $NetBSD: cpu.c,v 1.17 2008/01/14 15:23:56 joerg Exp $ */
/*-
* Copyright (c) 2000, 2006, 2007 The NetBSD Foundation, Inc.
@ -69,7 +69,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.16 2008/01/05 21:47:18 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.17 2008/01/14 15:23:56 joerg Exp $");
#include "opt_ddb.h"
#include "opt_multiprocessor.h"
@ -905,7 +905,7 @@ cpu_suspend(device_t dv)
{
struct cpu_softc *sc = device_private(dv);
struct cpu_info *ci = sc->sc_info;
int err;
int err, s;
if (ci->ci_flags & CPUF_PRIMARY)
return true;
@ -917,7 +917,19 @@ cpu_suspend(device_t dv)
mutex_enter(&cpu_lock);
err = cpu_setonline(ci, false);
mutex_exit(&cpu_lock);
return err == 0;
if (err)
return false;
s = splhigh();
#ifdef __i386__
npxsave_cpu(ci, 1);
#else
fpusave_cpu(ci, 1);
#endif
splx(s);
return true;
}
static bool