From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurentiu Tudor Subject: [PATCH] KVM: PPC: e500: fix couple of shift operations on 64 bits Date: Thu, 1 Oct 2015 15:58:03 +0300 Message-ID: <560D2DDB.4060203@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Cc: Laurentiu Tudor , Scott Wood , Alexander Graf To: , Return-path: Received: from mail-bl2on0119.outbound.protection.outlook.com ([65.55.169.119]:43959 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752980AbbJAM6V (ORCPT ); Thu, 1 Oct 2015 08:58:21 -0400 Sender: kvm-owner@vger.kernel.org List-ID: 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 Suggested-by: Scott Wood --- arch/powerpc/kvm/e500_mmu_host.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c index 008ab84..a096cf9 100644 --- a/arch/powerpc/kvm/e500_mmu_host.c +++ b/arch/powerpc/kvm/e500_mmu_host.c @@ -418,7 +418,7 @@ static inline int kvmppc_e500_shadow_map(struct kvmppc_vcpu_e500 *vcpu_e500, for (; tsize > BOOK3E_PAGESZ_4K; tsize -= tsize_inc) { 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; @@ -462,7 +462,7 @@ 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()) -- 1.8.3.1