x86/vmware: Skip timer_irq_works() check on VMware

The timer_irq_works() boot check may sometimes fail in a VM, when
the Host is overcommitted or when the Guest is running nested.

Since the intended check is unnecessary on VMware's virtual
hardware, by-pass it.

Signed-off-by: Renat Valiullin <rvaliullin@vmware.com>
Acked-by: Alok N Kataria <akataria@vmware.com>
Cc: virtualization@lists.linux-foundation.org
Link: http://lkml.kernel.org/r/20161013184539.GA11497@rvaliullin-vm
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
index 8116057..5130985 100644 (file)
--- a/arch/x86/kernel/cpu/vmware.c
+++ b/arch/x86/kernel/cpu/vmware.c
@@ -27,6 +27,7 @@
 #include <asm/div64.h>
 #include <asm/x86_init.h>
 #include <asm/hypervisor.h>
+#include <asm/timer.h>
 #include <asm/apic.h>
 
 #define CPUID_VMWARE_INFO_LEAF 0x40000000
@@ -94,6 +95,10 @@ static void __init vmware_platform_setup(void)
        } else {
                pr_warn("Failed to get TSC freq from the hypervisor\n");
        }
+
+#ifdef CONFIG_X86_IO_APIC
+       no_timer_check = 1;
+#endif
 }
 
 /*