Jan Beulich
2008-Dec-11 13:12 UTC
[Xen-devel] [PATCH] x86: enable interrupts explicitly in __start_xen()
Instead of relying on smp_prepare_cpus() (via check_nmi_watchdog()) or
init_xen_time() (via init_platform_timer() -> plt_overflow())
implicitly enabling interrupts, enable them explicitly once safe to do
so (it may actually be possible to move this even further up, but I
don''t think that would buy us much).
Signed-off-by: Jan Beulich <jbeulich@novell.com>
--- 2008-11-20.orig/xen/arch/x86/setup.c 2008-11-19 17:37:33.000000000 +0100
+++ 2008-11-20/xen/arch/x86/setup.c 2008-12-11 14:03:21.000000000 +0100
@@ -941,6 +941,9 @@ void __init __start_xen(unsigned long mb
set_in_cr4(X86_CR4_OSFXSR);
if ( cpu_has_xmm )
set_in_cr4(X86_CR4_OSXMMEXCPT);
+
+ local_irq_enable();
+
#ifdef CONFIG_X86_64
vesa_mtrr_init();
#endif
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