KVM: PPC: e500: fix couple of shift operations on 64 bits

Tudor Laurentiu · paulusmack · commit 224f363246c3 · 2015-10-15T15:59:19.000+11:00
Fix couple of cases where we shift left a 32-bit
value thus might get truncated results on 64-bit
targets.

Signed-off-by: Laurentiu Tudor &lt;Laurentiu.Tudor@freescale.com&gt;
Suggested-by: Scott Wood &lt;scotttwood@freescale.com&gt;
Acked-by: Scott Wood &lt;scottwood@freescale.com&gt;
Signed-off-by: Paul Mackerras &lt;paulus@samba.org&gt;
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
@@ -406,7 +406,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
 
 			for (; tsize > BOOK3E_PAGESZ_4K; tsize -= 2) {
 				unsigned long gfn_start, gfn_end;
-				tsize_pages = 1 << (tsize - 2);
+				tsize_pages = 1UL << (tsize - 2);
 
 				gfn_start = gfn & ~(tsize_pages - 1);
 				gfn_end = gfn_start + tsize_pages;
@@ -447,7 +447,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500,
 	}
 
 	if (likely(!pfnmap)) {
-		tsize_pages = 1 << (tsize + 10 - PAGE_SHIFT);
+		tsize_pages = 1UL << (tsize + 10 - PAGE_SHIFT);
 		pfn = gfn_to_pfn_memslot(slot, gfn);
 		if (is_error_noslot_pfn(pfn)) {
 			if (printk_ratelimit())
