From 0e4d394fe50308f69eb061eb89de78279df1e9dc Mon Sep 17 00:00:00 2001
From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Mon, 26 Jun 2017 18:39:30 +0200
Subject: [PATCH] xen/x86: Don't BUG on CPU0 offlining
CONFIG_BOOTPARAM_HOTPLUG_CPU0 allows to offline CPU0 but Xen HVM guests
BUG() in xen_teardown_timer(). Remove the BUG_ON(), this is probably a
leftover from ancient times when CPU0 hotplug was impossible, it works
just fine for HVM.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
---
arch/x86/xen/time.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index a1895a8e85c15..1ecb05db36320 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -309,7 +309,6 @@ static irqreturn_t xen_timer_interrupt(int irq, void *dev_id)
void xen_teardown_timer(int cpu)
{
struct clock_event_device *evt;
- BUG_ON(cpu == 0);
evt = &per_cpu(xen_clock_events, cpu).evt;
if (evt->irq >= 0) {
--
GitLab