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authorBoris Ostrovsky <boris.ostrovsky@oracle.com>2016-10-03 01:45:19 +0300
committerDavid Vrabel <david.vrabel@citrix.com>2016-10-05 12:32:22 +0300
commit565fdc6a2afeb14e654a8d9ebc792afb9d2c0019 (patch)
treef9ca1605b6adbbb6c4e56cf17b3dd2e30fcea5fb /arch
parentb057878b2aadc7e06280e7e702a36e7adb1bcdf7 (diff)
downloadlinux-565fdc6a2afeb14e654a8d9ebc792afb9d2c0019.tar.xz
xen/x86: Initialize per_cpu(xen_vcpu, 0) a little earlier
xen_cpuhp_setup() calls mutex_lock() which, when CONFIG_DEBUG_MUTEXES is defined, ends up calling xen_save_fl(). That routine expects per_cpu(xen_vcpu, 0) to be already initialized. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/xen/enlighten.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 366b6aed4a8e..96c2dea798a1 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1644,7 +1644,6 @@ asmlinkage __visible void __init xen_start_kernel(void)
xen_initial_gdt = &per_cpu(gdt_page, 0);
xen_smp_init();
- WARN_ON(xen_cpuhp_setup());
#ifdef CONFIG_ACPI_NUMA
/*
@@ -1658,6 +1657,8 @@ asmlinkage __visible void __init xen_start_kernel(void)
possible map and a non-dummy shared_info. */
per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0];
+ WARN_ON(xen_cpuhp_setup());
+
local_irq_disable();
early_boot_irqs_disabled = true;