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[23.128.96.18]) by mx.google.com with ESMTP id nt21si24466555pjb.178.2021.10.24.14.52.12; Sun, 24 Oct 2021 14:52:27 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=PF+HxDOj; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231724AbhJXVrG (ORCPT + 99 others); Sun, 24 Oct 2021 17:47:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229519AbhJXVrF (ORCPT ); Sun, 24 Oct 2021 17:47:05 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50494C061745 for ; Sun, 24 Oct 2021 14:44:44 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id x27so4853716lfu.5 for ; Sun, 24 Oct 2021 14:44:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=ryZxhawk/h0qs5tZCgKZdBuPuqyJ9WVtt/N+HNRxYbA=; b=PF+HxDOj4jRbUbIGGsXBJZMvVI+QzbTEkrtSOQMPI0iSaDkNYRRxzaRa4FWHkKCyNF rCSHzX0BxdnvWjWd4/u+8txDSnF5F1QFS4qkLxQQalw5oUjDghgF33VXUMIVxqIBNMlC EYOtYfn61QIaTQ5PiEeaacaBh24Zg1OJ4G/4gR2X2mwB/GfOd4LvJEaXkZ654T0kaydL 2sc2upn6JN8Hw6zm4l/vnMl/rCXDM1PvVwswL7lK4C5HVmdExpUq1swPKmITRYLDSYcj JyFNuLF//kSYlTHMH4wHRCCltwCDxWrk5rQWIcVKMFP3WJwEftwD18DzxKGIIXPj7smi 5tKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=ryZxhawk/h0qs5tZCgKZdBuPuqyJ9WVtt/N+HNRxYbA=; b=N0/PQuVsB70dppIbXr7DhHiq+mfzdlPxbSAVWMUwQkkKhpWVbHdUC8oH1WVdrwGhDH fXR5Q3LLzCvxx12W5v8jfwR2lgLeoDRCOM2AsVRkuucXTRQaNPZLWi6KELn0VYwQUhNy 8NUGxtrRtEK2s+HrPQbWF1TT1rTE/gKdUoswQs4z1ehXKRKwhBLQZ6ydOl7lvdOVS9q5 PUa/1CSU+su9revzd5uQTcF3Rt8MlN28llgTMCr9nOI29RFdAM1V/e3cDyrtSN50KwjL qfOCVagfbgkOhq/yLV0OLeLq3kEaHR6mD6pvfUldd2Dx/dcuKBFw8PrfumXtCZMyTil7 7vfg== X-Gm-Message-State: AOAM533L5Tjxg2Y3MpuPBO5EaT6wSbK2Z70gtxFltY66yJhOUdzXDGe6 4BjZukBeCdimlme0zpomsJqM7kYe0bx2RjZWGacGp1F525Q= X-Received: by 2002:ac2:430d:: with SMTP id l13mr6615116lfh.656.1635111882492; Sun, 24 Oct 2021 14:44:42 -0700 (PDT) MIME-Version: 1.0 References: <20211020054942.1608637-1-quanyang.wang@windriver.com> In-Reply-To: <20211020054942.1608637-1-quanyang.wang@windriver.com> From: Linus Walleij Date: Sun, 24 Oct 2021 23:44:31 +0200 Message-ID: Subject: Re: [PATCH] ARM: add BUILD_BUG_ON to check if fixmap range spans multiple pmds To: quanyang.wang@windriver.com Cc: Russell King , Thomas Gleixner , Ard Biesheuvel , Linux ARM , linux-kernel Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Oct 20, 2021 at 7:50 AM wrote: > From: Quanyang Wang > > Not only the early fixmap range, but also the fixmap range should be > checked if it spans multiple pmds. When enabling CONFIG_DEBUG_HIGHMEM, > some systems which contain up to 16 CPUs will crash. > > Signed-off-by: Quanyang Wang Looks reasonable to me. Reviewed-by: Linus Walleij Please submit this patch into Russell's patch tracker. Yours, Linus Walleij