Merge by hand from Linus' tree.

Signed-off-by: Paul Mackerras <paulus@samba.org>

3 files changed, 7 insertions, 5 deletions

diff --git a/arch/ppc64/kernel/machine_kexec.c b/arch/ppc64/kernel/machine_kexec.c
index 4775f12a013..bf7cc4f8210 100644
--- a/arch/ppc64/kernel/machine_kexec.c
+++ b/arch/ppc64/kernel/machine_kexec.c
@@ -205,6 +205,7 @@ static void kexec_prepare_cpus(void)
 			continue;
 
 		while (paca[i].hw_cpu_id != -1) {
+			barrier();
 			if (!cpu_possible(i)) {
 				printk("kexec: cpu %d hw_cpu_id %d is not"
 						" possible, ignoring\n",
diff --git a/arch/ppc64/mm/hash_native.c b/arch/ppc64/mm/hash_native.c
index 874cf96938f..174d14576c2 100644
--- a/arch/ppc64/mm/hash_native.c
+++ b/arch/ppc64/mm/hash_native.c
@@ -342,14 +342,13 @@ static void native_flush_hash_range(unsigned long number, int local)
 	hpte_t *hptep;
 	unsigned long hpte_v;
 	struct ppc64_tlb_batch *batch = &__get_cpu_var(ppc64_tlb_batch);
-	unsigned long large;
+	unsigned long large = batch->large;
 
 	local_irq_save(flags);
 
 	j = 0;
 	for (i = 0; i < number; i++) {
 		va = batch->vaddr[j];
-		large = pte_huge(batch->pte[i]);
 		if (large)
 			vpn = va >> HPAGE_SHIFT;
 		else
@@ -399,7 +398,7 @@ static void native_flush_hash_range(unsigned long number, int local)
 		asm volatile("ptesync":::"memory");
 
 		for (i = 0; i < j; i++)
-			__tlbie(batch->vaddr[i], 0);
+			__tlbie(batch->vaddr[i], large);
 
 		asm volatile("eieio; tlbsync; ptesync":::"memory");
 
diff --git a/arch/ppc64/mm/tlb.c b/arch/ppc64/mm/tlb.c
index 31afd95bf87..09ab81a10f4 100644
--- a/arch/ppc64/mm/tlb.c
+++ b/arch/ppc64/mm/tlb.c
@@ -141,12 +141,14 @@ void hpte_update(struct mm_struct *mm, unsigned long addr,
 	 * up scanning and resetting referenced bits then our batch context
 	 * will change mid stream.
 	 */
-	if (unlikely(i != 0 && mm != batch->mm)) {
+	if (i != 0 && (mm != batch->mm || batch->large != pte_huge(pte))) {
 		flush_tlb_pending();
 		i = 0;
 	}
-	if (i == 0)
+	if (i == 0) {
 		batch->mm = mm;
+		batch->large = pte_huge(pte);
+	}
 	if (addr < KERNELBASE) {
 		vsid = get_vsid(mm->context.id, addr);
 		WARN_ON(vsid == 0);