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[src/trunk]: src/sys/arch/x86/acpi Run a xcall(9) to ensure that all CPUs are...
details: https://anonhg.NetBSD.org/src/rev/661ccae739e0
branches: trunk
changeset: 756829:661ccae739e0
user: jruoho <jruoho%NetBSD.org@localhost>
date: Wed Aug 04 16:16:55 2010 +0000
description:
Run a xcall(9) to ensure that all CPUs are out from the ACPI idle-loop
before detachment.
diffstat:
sys/arch/x86/acpi/acpi_cpu_md.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)
diffs (53 lines):
diff -r 7047edd68a61 -r 661ccae739e0 sys/arch/x86/acpi/acpi_cpu_md.c
--- a/sys/arch/x86/acpi/acpi_cpu_md.c Wed Aug 04 14:59:39 2010 +0000
+++ b/sys/arch/x86/acpi/acpi_cpu_md.c Wed Aug 04 16:16:55 2010 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: acpi_cpu_md.c,v 1.3 2010/07/23 13:54:21 jruoho Exp $ */
+/* $NetBSD: acpi_cpu_md.c,v 1.4 2010/08/04 16:16:55 jruoho Exp $ */
/*-
* Copyright (c) 2010 Jukka Ruohonen <jruohonen%iki.fi@localhost>
@@ -27,11 +27,12 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.3 2010/07/23 13:54:21 jruoho Exp $");
+__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.4 2010/08/04 16:16:55 jruoho Exp $");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kcore.h>
+#include <sys/xcall.h>
#include <x86/cpu.h>
#include <x86/cpuvar.h>
@@ -143,14 +144,13 @@
x86_cpu_idle_set(acpicpu_cstate_idle, "acpi");
x86_enable_intr();
- DELAY(10000);
-
return 0;
}
int
acpicpu_md_idle_stop(void)
{
+ uint64_t xc;
KASSERT(native_idle != NULL);
KASSERT(native_idle_text[0] != '\0');
@@ -159,7 +159,12 @@
x86_cpu_idle_set(native_idle, native_idle_text);
x86_enable_intr();
- DELAY(10000);
+ /*
+ * Run a cross-call to ensure that all CPUs are
+ * out from the ACPI idle-loop before detachment.
+ */
+ xc = xc_broadcast(0, (xcfunc_t)nullop, NULL, NULL);
+ xc_wait(xc);
return 0;
}
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