From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59605) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cZZ9i-0006Ov-77 for qemu-devel@nongnu.org; Fri, 03 Feb 2017 03:23:43 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cZZ9g-0004jR-Tf for qemu-devel@nongnu.org; Fri, 03 Feb 2017 03:23:42 -0500 Received: from mx1.redhat.com ([209.132.183.28]:38714) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cZZ9g-0004jG-Ni for qemu-devel@nongnu.org; Fri, 03 Feb 2017 03:23:40 -0500 From: Peter Xu Date: Fri, 3 Feb 2017 16:22:35 +0800 Message-Id: <1486110164-13797-10-git-send-email-peterx@redhat.com> In-Reply-To: <1486110164-13797-1-git-send-email-peterx@redhat.com> References: <1486110164-13797-1-git-send-email-peterx@redhat.com> Subject: [Qemu-devel] [PATCH v6 09/18] intel_iommu: vtd_slpt_level_shift check level List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: tianyu.lan@intel.com, kevin.tian@intel.com, mst@redhat.com, jan.kiszka@siemens.com, jasowang@redhat.com, peterx@redhat.com, David Gibson , alex.williamson@redhat.com, bd.aviv@gmail.com This helps in debugging incorrect level passed in. Signed-off-by: Peter Xu --- hw/i386/intel_iommu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index c672621..d74aa27 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -168,6 +168,7 @@ static gboolean vtd_hash_remove_by_domain(gpointer key, gpointer value, /* The shift of an addr for a certain level of paging structure */ static inline uint32_t vtd_slpt_level_shift(uint32_t level) { + assert(level != 0); return VTD_PAGE_SHIFT_4K + (level - 1) * VTD_SL_LEVEL_BITS; } -- 2.7.4