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 8D69F55C30D; Tue, 22 Sep 2026 17:33:14 +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=1790098400; cv=none; b=AW0i/erb7U05yZWFnYvAmXN0oFszyHabXi8YCuyp3dPoCHZ1iev3MlRiz58poIzawmiAXRUH461p+5oahUFDWj/0RfdpsekY2ohSEXdogVXuc7XvWIFxSSbwm9wSWtNJNdCv0i88py10HI/hblhZtal2c61osiovKP9Wpv5c3NI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790098400; c=relaxed/simple; bh=PeJQ7fYXLGcw4P0kvfY82twCI/k6VJB344U1K7tkEMM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=MHr6VSwUWuL0nrikyk8x09865keW9lYaR69SbA/WCgiiA7E5TRe5MZuQj9GeL2SSTLPTonB1LZLn8XttUCao7ipD+rg8KTcEZK89eVZiOuJYUtLRcyBwNVphQH3Rue4Ifh29ffkfDnlVTrzxr3kh0o3p1rH1BA/Lv619p2oiL/A= 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=d3xeuRYT; 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="d3xeuRYT" 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 49DA01AED; Tue, 22 Sep 2026 10:33:09 -0700 (PDT) Received: from [127.0.1.1] (e142334-100.cambridge.arm.com [10.2.198.93]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 616B73F86C; Tue, 22 Sep 2026 10:33:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1790098392; bh=PeJQ7fYXLGcw4P0kvfY82twCI/k6VJB344U1K7tkEMM=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=d3xeuRYT+klOzNDSyNdM3rcbkRZj3fdN5cBa1D1YwCIZyxd+7f7Sy8BgbNUmU5al1 3s/0EsafMWeY/ZZrmT+pw9w6TaZJeLQe8kr+7niH1ZmkhigzCVK9Oe/kkhM5HFTKdQ LdRNH7rjihzI3dDQ1qhnr2R8GM6p9/Ohat1pmPv0= From: Muhammad Usama Anjum Date: Tue, 22 Sep 2026 18:32:01 +0100 Subject: [PATCH v2 6/6] arm64: enable a distinct type for HW PTEs Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260922-pte0_arm-v2-6-a3f1ddff0a8a@arm.com> References: <20260922-pte0_arm-v2-0-a3f1ddff0a8a@arm.com> In-Reply-To: <20260922-pte0_arm-v2-0-a3f1ddff0a8a@arm.com> To: Catalin Marinas , Will Deacon , Mark Rutland , Ryan Roberts , Ard Biesheuvel , Ilias Apalodimas , Andrey Ryabinin , Alexander Potapenko , Andrey Konovalov , Dmitry Vyukov , Vincenzo Frascino , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, Muhammad Usama Anjum X-Mailer: b4 0.16.0 With HW PTE pointers and direct HW PTE accesses converted, arm64 can use the generic hw_pte_t wrapper instead of the pte_t alias. Select ARCH_HAS_HW_PTE_T to give HW PTEs and SW PTE values distinct C types. Reviewed-by: Ryan Roberts Signed-off-by: Muhammad Usama Anjum --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 2bbeded33da0d..42841d5e2ed26 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -31,6 +31,7 @@ config ARM64 select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL select ARCH_HAS_GIGANTIC_PAGE + select ARCH_HAS_HW_PTE_T select ARCH_HAS_KCOV select ARCH_HAS_KERNEL_FPU_SUPPORT if KERNEL_MODE_NEON select ARCH_HAS_KEEPINITRD -- 2.47.3