From: Xiantao Zhang <xiantao.zhang@intel.com>
Date: Sat, 8 Nov 2008 07:46:59 +0000 (+0800)
Subject: KVM: ia64: fix vmm_spin_{un}lock for !CONFIG_SMP
X-Git-Tag: v2.6.28-rc5~75^2~1
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c60ff51eb26dfcfb0bdc807b09a096aeadd01325;p=~emulex%2Finfiniband.git

KVM: ia64: fix vmm_spin_{un}lock for !CONFIG_SMP

In the case of !CONFIG_SMP, raw_spinlock_t is empty and the spinlock functions
don't build.  Fix by defining spinlock functions for the uniprocessor case.

Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/ia64/kvm/vcpu.h b/arch/ia64/kvm/vcpu.h
index 341e3fee280..e9b2a4e121c 100644
--- a/arch/ia64/kvm/vcpu.h
+++ b/arch/ia64/kvm/vcpu.h
@@ -384,6 +384,10 @@ static inline u64 __gpfn_is_io(u64 gpfn)
 #define MODE_IND(psr)	\
 	(((psr).it << 2) + ((psr).dt << 1) + (psr).rt)
 
+#ifndef CONFIG_SMP
+#define _vmm_raw_spin_lock(x)	 do {}while(0)
+#define _vmm_raw_spin_unlock(x) do {}while(0)
+#else
 #define _vmm_raw_spin_lock(x)						\
 	do {								\
 		__u32 *ia64_spinlock_ptr = (__u32 *) (x);		\
@@ -403,6 +407,7 @@ static inline u64 __gpfn_is_io(u64 gpfn)
 	do { barrier();				\
 		((spinlock_t *)x)->raw_lock.lock = 0; } \
 while (0)
+#endif
 
 void vmm_spin_lock(spinlock_t *lock);
 void vmm_spin_unlock(spinlock_t *lock);