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 2C5BD4418DC; Tue, 14 Jul 2026 14:05:57 +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=1784037958; cv=none; b=C06iRmo8yzUD+a6bJ7iqlGtUYrIjW88rroh2gJCVL3vRcqctmXNjcMAQubUfBD6zOKQqSIjemv5mcBAMwQl0MM71DKyV1KhegFiWSIb8laF6RCrSPH+zO/Nroe1fzB6qSyQbug1Nwh3oBFbO3zF5AcoVJe9LESyWoIfzFOHGig4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784037958; c=relaxed/simple; bh=VE+lHAHWK4dpsc9V3W/UPtkE4aBmXym2FNHO+k6axB4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ZSLb/9kbTU6BpeMbLkhO6NQyRO/hbw8zTw5Mcz2INMuwzm426f0FOMrZ0S6q6U2zMaNyE5t328EKgGCCh6Sh2FiYnUxqNMZ2719jF8dkXI++GkiBBFiuHHzLYIB3rHJRwLtjfp2qbFU53LcAj/iSzW9/Cv4OM443vpN83a08Pb4= 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=GBHbIxSv; 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="GBHbIxSv" 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 4BC9F1576; Tue, 14 Jul 2026 07:05:52 -0700 (PDT) Received: from localhost.localdomain (e123572-lin.cambridge.arm.com [10.2.208.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 21DE63F7B4; Tue, 14 Jul 2026 07:05:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1784037956; bh=VE+lHAHWK4dpsc9V3W/UPtkE4aBmXym2FNHO+k6axB4=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=GBHbIxSv6yx6lpCATNlxlwrGWzZkjE50qqNWmTtSfC55Qij6ibNwZaI+5R9T7uiWd i/VIOmdvMtutA0FQwIru3Tr0+8ZG+pxZmXfmR5SvbAQB1BQh7BgutmvfbwIFq0TwaI MOql+/rIhlaU8c8MGd+SNjdFNyN/NAYTkzmX9Pu0= From: Kevin Brodsky Date: Tue, 14 Jul 2026 15:03:55 +0100 Subject: [PATCH 06/22] loongarch: mm: use mm_is_kernel() in switch_mm_irqs_off() Precedence: bulk X-Mailing-List: linux-parisc@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: <20260714-remove_pgtable_cdtor-v1-6-44be8a7685d7@arm.com> References: <20260714-remove_pgtable_cdtor-v1-0-44be8a7685d7@arm.com> In-Reply-To: <20260714-remove_pgtable_cdtor-v1-0-44be8a7685d7@arm.com> To: linux-mm@kvack.org Cc: Kevin Brodsky , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Pasha Tatashin , Russell King , Catalin Marinas , Will Deacon , Ryan Roberts , linux-arm-kernel@lists.infradead.org, Huacai Chen , loongarch@lists.linux.dev, "James E.J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, Madhavan Srinivasan , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Gerald Schaefer , linux-s390@vger.kernel.org, "David S. Miller" , Andreas Larsson , sparclinux@vger.kernel.org, Richard Weinberger , Anton Ivanov , Johannes Berg , linux-um@lists.infradead.org, Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Ning Sun , x86@kernel.org, tboot-devel@lists.sourceforge.net, Ard Biesheuvel , Ilias Apalodimas , linux-efi@vger.kernel.org, Vishal Moola , Alistair Popple , "Matthew Wilcox (Oracle)" , linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1784037902; l=1057; i=kevin.brodsky@arm.com; s=20260427; h=from:subject:message-id; bh=VE+lHAHWK4dpsc9V3W/UPtkE4aBmXym2FNHO+k6axB4=; b=vNqbzx2iMvV1fGidU2iKtjDvRxNSiS8E7MvYIjkLSIIndPb41plWi7UyNf7PU14qsGJzzjbPF x7c/ZLWX2B8DhFd7ct6QVQiE/yCdMoFkL2mbSBPv7/C7wV2jkBlaVC2 X-Developer-Key: i=kevin.brodsky@arm.com; a=ed25519; pk=N2QG+eJKrvkNovwhhwJhnJ4+ScVfsGCHldmqLfcMTFs= The new MMF_KERNEL flag identifies kernel-owned mm's. Checking the flag with mm_is_kernel() is preferred over comparing directly against &init_mm. No functional change, as only init_mm has MMF_KERNEL set for now. Assisted-by: Codex:GPT-5.5 Signed-off-by: Kevin Brodsky --- arch/loongarch/include/asm/mmu_context.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/loongarch/include/asm/mmu_context.h b/arch/loongarch/include/asm/mmu_context.h index 304363bd3935..6d51f11427b4 100644 --- a/arch/loongarch/include/asm/mmu_context.h +++ b/arch/loongarch/include/asm/mmu_context.h @@ -95,7 +95,7 @@ static inline void switch_mm_irqs_off(struct mm_struct *prev, struct mm_struct * if (!asid_valid(next, cpu)) get_new_mmu_context(next, cpu, &need_flush); - if (next != &init_mm) + if (!mm_is_kernel(next)) atomic_update_pgd_asid(cpu_asid(cpu, next), (unsigned long)next->pgd); else atomic_update_pgd_asid(cpu_asid(cpu, next), (unsigned long)invalid_pg_dir); -- 2.51.2