commit a43fe0e789f5445f5224511034f410adf11f153b
author David S. Miller <davem@sunset.davemloft.net> Sat Feb 04 03:10:53 2006 -0800
committer David S. Miller <davem@sunset.davemloft.net> Mon Mar 20 01:11:40 2006 -0800
tree cface7b6e616be616899da8c0762f904263c5985
parent 1633a53c79498455b16d051451f4e3f83ab4e7dd

[SPARC64]: Add some hypervisor tlb_type checks.

And more consistently check cheetah{,_plus} instead
of assuming anything not spitfire is cheetah{,_plus}.

Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/smp.c

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 16b8eca..aba0f88 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -528,6 +528,11 @@
 	}
 }
 
+static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
+{
+	/* XXX implement me */
+}
+
 /* Send cross call to all processors mentioned in MASK
  * except self.
  */
@@ -541,8 +546,10 @@
 
 	if (tlb_type == spitfire)
 		spitfire_xcall_deliver(data0, data1, data2, mask);
-	else
+	else if (tlb_type == cheetah || tlb_type == cheetah_plus)
 		cheetah_xcall_deliver(data0, data1, data2, mask);
+	else
+		hypervisor_xcall_deliver(data0, data1, data2, mask);
 	/* NOTE: Caller runs local copy on master. */
 
 	put_cpu();
@@ -695,11 +702,17 @@
 void smp_flush_dcache_page_impl(struct page *page, int cpu)
 {
 	cpumask_t mask = cpumask_of_cpu(cpu);
-	int this_cpu = get_cpu();
+	int this_cpu;
+
+	if (tlb_type == hypervisor)
+		return;
 
 #ifdef CONFIG_DEBUG_DCFLUSH
 	atomic_inc(&dcpage_flushes);
 #endif
+
+	this_cpu = get_cpu();
+
 	if (cpu == this_cpu) {
 		__local_flush_dcache_page(page);
 	} else if (cpu_online(cpu)) {
@@ -715,7 +728,7 @@
 					       __pa(pg_addr),
 					       (u64) pg_addr,
 					       mask);
-		} else {
+		} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
 #ifdef DCACHE_ALIASING_POSSIBLE
 			data0 =
 				((u64)&xcall_flush_dcache_page_cheetah);
@@ -737,7 +750,12 @@
 	void *pg_addr = page_address(page);
 	cpumask_t mask = cpu_online_map;
 	u64 data0;
-	int this_cpu = get_cpu();
+	int this_cpu;
+
+	if (tlb_type == hypervisor)
+		return;
+
+	this_cpu = get_cpu();
 
 	cpu_clear(this_cpu, mask);
 
@@ -754,7 +772,7 @@
 				       __pa(pg_addr),
 				       (u64) pg_addr,
 				       mask);
-	} else {
+	} else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
 #ifdef DCACHE_ALIASING_POSSIBLE
 		data0 = ((u64)&xcall_flush_dcache_page_cheetah);
 		cheetah_xcall_deliver(data0,
@@ -780,8 +798,10 @@
 
 		if (tlb_type == spitfire)
 			spitfire_xcall_deliver(data0, 0, 0, mask);
-		else
+		else if (tlb_type == cheetah || tlb_type == cheetah_plus)
 			cheetah_xcall_deliver(data0, 0, 0, mask);
+		else if (tlb_type == hypervisor)
+			hypervisor_xcall_deliver(data0, 0, 0, mask);
 	}
 }