From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4B2EE436361; Mon, 27 Jul 2026 16:48:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785170945; cv=none; b=L5a37xTh3b9j9HimXFGmFSJ2B/FAeGa+VRjTaho5AoFmgEjXrc1f1uTF2iyGozoRgkrl4R8V31t2pdwY9ICNl8bYUGf5+zOnZx+8z2a0zPVUPjadB40+qJURCZiEujDONQu5+dIFgZuGTyfCeQMkszwnsyzB25Z6OKijVoLZTlI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785170945; c=relaxed/simple; bh=qEy/4+Wk/vbSZVdyK/qjuUUSc2n2G8gdddSYiTCTNvs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DnuQmTPdYw6d3gpk6t3NKT77lBiNlDQTvaTmoXmb79NZbgxMpgGWx9v2EeFXmPR7aX+yfw/LYEXZWOA0Virk2iVgCM1LfGIDKjNdEQtg5Xywwt/x+L65ykf31M2zcSb6uCMaFLB+pDYixOIHNM5bPTeimVP0ObYYfletqRjeVb4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=cDo3Do/r; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="cDo3Do/r" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A7BBE19F6; Mon, 27 Jul 2026 09:48:52 -0700 (PDT) Received: from e142334-100.cambridge.arm.com (e142334-100.cambridge.arm.com [10.2.198.93]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 1AEFB3F86F; Mon, 27 Jul 2026 09:48:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785170936; bh=qEy/4+Wk/vbSZVdyK/qjuUUSc2n2G8gdddSYiTCTNvs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cDo3Do/rskCw4TMjsksYR/tTcB5Uv/vDrx6ixPR1mOTM9Q1q7fU9kGjz12p9Id7LU nUuEt+vwKjZkAjRnRdC1eDlKTRvfsr1Lh1WkbMYT2XqOqXc7LIJh1KJzggyS6NyLvN HLK4yn08JVV6tDRzci16mxLBAw0vZjMCqreNmXG8= From: Muhammad Usama Anjum To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter , Dimitri Sivanich , Arnd Bergmann , Greg Kroah-Hartman , "James E.J. Bottomley" , Helge Deller , Juergen Gross , Stefano Stabellini , Muchun Song , Oscar Salvador , Andrew Morton , "Liam R. Howlett" , Lorenzo Stoakes , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Peter Zijlstra , Andrey Ryabinin , David Hildenbrand , Pasha Tatashin , Chris Li , Kairui Song , Uladzislau Rezki , Steven Rostedt , Masami Hiramatsu , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , SJ Park , "Matthew Wilcox (Oracle)" , Jan Kara , Jason Gunthorpe , Leon Romanovsky , Miaohe Lin , Dennis Zhou , Tejun Heo , Christoph Lameter , Mike Rapoport , Johannes Weiner , ziy@nvidia.com, pfalcato@suse.de, agordeev@linux.ibm.com, ryan.roberts@arm.com Cc: Muhammad Usama Anjum , linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-parisc@vger.kernel.org, xen-devel@lists.xenproject.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, kasan-dev@googlegroups.com, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, damon@lists.linux.dev Subject: [PATCH RFC 09/11] misc/sgi-gru: use ptep_get() for page-table reads Date: Mon, 27 Jul 2026 17:47:00 +0100 Message-ID: <20260727164715.2866609-10-usama.anjum@arm.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260727164715.2866609-1-usama.anjum@arm.com> References: <20260727164715.2866609-1-usama.anjum@arm.com> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit A leaf PMD is being read through ptep_get() by treating the PMD address as PTE-sized table storage. ptep_get() now accepts hw_pte_t *, so update the cast accordingly. pte_offset_kernel() also returns hw_pte_t *. Get pte_t value by calling ptep_get(). Signed-off-by: Muhammad Usama Anjum --- drivers/misc/sgi-gru/grufault.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 3557d78ee47a2..ff89d34ad2aa4 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -228,10 +228,10 @@ static int atomic_pte_lookup(struct vm_area_struct *vma, unsigned long vaddr, goto err; #ifdef CONFIG_X86_64 if (unlikely(pmd_leaf(*pmdp))) - pte = ptep_get((pte_t *)pmdp); + pte = ptep_get((hw_pte_t *)pmdp); else #endif - pte = *pte_offset_kernel(pmdp, vaddr); + pte = ptep_get(pte_offset_kernel(pmdp, vaddr)); if (unlikely(!pte_present(pte) || (write && (!pte_write(pte) || !pte_dirty(pte))))) -- 2.47.3