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 CFEAB47DD43; Tue, 14 Jul 2026 14:06:35 +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=1784037997; cv=none; b=G7vQCYeNZoOZhc6W++lqz0f8yrr/bSxpUv7i1lfM5skbPJf5D7qzB+bdI4sG/PTlFHYOEDd51wWl+p3EHuP+5H/F1rvVRMjBoVvH6Yr5eqpJo6KsgFQV/Sn2DEe17byOxcGpe/4Yd5gG7VL4Rqoy0LVx4qf/W8e2/jRmYduF7lE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784037997; c=relaxed/simple; bh=brubU8ipNy1ujnPWOSJsU4D9Csfsl5oNxDWj3XnSBxg=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ktRvENGJZedI5axRaBsGg5kMhr16vnF8XcNWWViSrdr5BlTsfeuL25Ie3vfELMW37YEnbMbKfuAfc2Xrl3RUah3SZux82Dz+IbdeJCRcbVmJVJjVgg1gZ2lwOGUPVCsEdlcDyWGCkNrsTjn88eBDElGf8YrNaYNqVZTAHYtG96U= 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=YzY9thwi; 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="YzY9thwi" 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 E5D6A1576; Tue, 14 Jul 2026 07:06:30 -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 BE3913F7B4; Tue, 14 Jul 2026 07:06:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1784037995; bh=brubU8ipNy1ujnPWOSJsU4D9Csfsl5oNxDWj3XnSBxg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=YzY9thwiHc65wNiUxU67y6/tJ7ZmfWCBeoA2a4LNQMo0O7ibHK6ctA9ComeTUEm9C I/qi+0IpZSq41xPb+OZ7Z3/G4uCkw9cLd6IhSMUabwxmOQOqx2sF6D5jJAoetl8ck9 oA5zuyScXswzHCcI9ibhnX1aroPeO+YpvDY2p/3g= From: Kevin Brodsky Date: Tue, 14 Jul 2026 15:04:00 +0100 Subject: [PATCH 11/22] um: mm: use mm_is_kernel() in TLB sync Precedence: bulk X-Mailing-List: linux-arch@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-v1-11-44be8a7685d7@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=784; i=kevin.brodsky@arm.com; s=20260427; h=from:subject:message-id; bh=brubU8ipNy1ujnPWOSJsU4D9Csfsl5oNxDWj3XnSBxg=; b=/PzTb9tRgc6q7ZO/WLmLmpzghLV5CdRWiA/u95e31NiKnKwzFm+3cKJU2/zrnT5S/P+reJB4V ezvWWMbftRCD/SWI9ofvYfumKl5AhLTyCVWAwhB/2VFq3mOJHXdgNVl 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/um/kernel/tlb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 1f175716b474..fa34a710203e 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -171,7 +171,7 @@ int um_tlb_sync(struct mm_struct *mm) return 0; ops.mm_idp = &mm->context.id; - if (mm == &init_mm) { + if (mm_is_kernel(mm)) { ops.mmap = kern_map; ops.unmap = kern_unmap; } else { -- 2.51.2