From nobody Sat Jul 25 20:48:49 2026 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ED4F135E1A3; Mon, 13 Jul 2026 23:07:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783984045; cv=none; b=jmFjlaVLTFQpze1UgPMx9R5fh9vDN8rkBO1pcMU/oBvPw0yz0OEZcTIMFAyZBTSBkyn22xae6qscOpHs93JT8Y0cv9VphjXq5VQN0J4gWD74m6+AOTE4ot/Yg5udbpSMcMqYZfs1GNeKOQ4rcDMNeXELoVhh+bFfid1ESPM9sys= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783984045; c=relaxed/simple; bh=iP+FhnOw25SDPS6fh63Q3Q+j6+60m7CT96umQ2nDRxM=; h=Date:From:To:Subject:Cc:In-Reply-To:References:MIME-Version: Message-ID:Content-Type; b=qmbFkCjcLKHBsRG+02hWdh4bmLh1216UOGjw56KJ4dpBN4x/QdlTEoo3rLUYLnxj1s4WOIUGK+A8CKLiDb4LNGFmmUnAGeqzt3buJLWiSzp+zydBVoTYqc5o0LtjZVk/nYjpxIrVJPmrVL8vXFUpVHln+tN7KKaEcAOyZZyJk7s= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=n5g1B8/T; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=UpeLgpr3; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="n5g1B8/T"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="UpeLgpr3" Date: Mon, 13 Jul 2026 23:07:18 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1783984040; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8iNGSH7DJ1ZhQiHZU+PIkvjlfqgx67j67mwqXKIt6Y8=; b=n5g1B8/Tk1UZ4/0ZRxjGhbM1FcIVLE924qROIQ28uRKoSKFKHPkaQiR82zJW0+KP82J4mx sm9yy5Lf03BKy+MiUbbSrYNUlyeC65OVP2j7BNmpAHkbUMSvqDLQJvZ05XI7CQdp7pIxWw u4Lik49KXpaR+7ZhoeVhqaZYCmt1/qZ0ocjczk9nQdxPk8plKcz3cmThhIVdmJkNC4KRQc Ckf/YBEAXjrXNx8pt+/VWdnklAWJrR4IquyOSyQAjCfepf6PDRNQyWYmy5JHApF3L3mGzu zDDAyPp13opjiIFM2Zy/vpaKiODb8ML9+EgPTCx/Oy1VQELHJpAqFvtI9mMsxw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1783984040; h=from:from:sender:sender:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=8iNGSH7DJ1ZhQiHZU+PIkvjlfqgx67j67mwqXKIt6Y8=; b=UpeLgpr32G57NvidSzPqRFF18tzN0Y5XDGYXOCsoA9LnZ7AS1ZqnhpA3qn/mH7pEvZAV16 ry+bUF35iQcMxVBQ== From: "tip-bot2 for Vishal Moola" Sender: tip-bot2@linutronix.de Reply-to: linux-kernel@vger.kernel.org To: linux-tip-commits@vger.kernel.org Subject: [tip: x86/mm] x86/mm: Convert arch_sync_kernel_mappings() to ptdescs Cc: Vishal Moola , Dave Hansen , William Kucharski , "Mike Rapoport (Microsoft)" , x86@kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260629185742.126987-5-vishal.moola@gmail.com> References: <20260629185742.126987-5-vishal.moola@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <178398403862.1844600.11095853811772323820.tip-bot2@tip-bot2> Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails Precedence: bulk Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The following commit has been merged into the x86/mm branch of tip: Commit-ID: 46ee485bb9dee952cab3e7b22138b9ad0e5cb468 Gitweb: https://git.kernel.org/tip/46ee485bb9dee952cab3e7b22138b9ad0= e5cb468 Author: Vishal Moola AuthorDate: Mon, 29 Jun 2026 11:57:37 -07:00 Committer: Dave Hansen CommitterDate: Mon, 13 Jul 2026 15:55:10 -07:00 x86/mm: Convert arch_sync_kernel_mappings() to ptdescs Convert arch_sync_kernel_mappings() to ptdescs in preparation for the eventual splitting of ptdescs from struct page. Following this patch, we can successfully boot a 32-bit x86 kernel with separately allocated ptdescs. Signed-off-by: Vishal Moola Signed-off-by: Dave Hansen Reviewed-by: William Kucharski Acked-by: Mike Rapoport (Microsoft) Link: https://patch.msgid.link/20260629185742.126987-5-vishal.moola@gmail.c= om --- arch/x86/mm/fault.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 45b99c3..c31ffea 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -275,17 +275,17 @@ void arch_sync_kernel_mappings(unsigned long start, u= nsigned long end) for (addr =3D start & PMD_MASK; addr >=3D TASK_SIZE_MAX && addr < VMALLOC_END; addr +=3D PMD_SIZE) { - struct page *page; + struct ptdesc *ptdesc; =20 spin_lock(&pgd_lock); - list_for_each_entry(page, &pgd_list, lru) { + list_for_each_entry(ptdesc, &pgd_list, pt_list) { spinlock_t *pgt_lock; =20 /* the pgt_lock only for Xen */ - pgt_lock =3D &pgd_page_get_mm(page)->page_table_lock; + pgt_lock =3D &pgd_page_get_mm(ptdesc_page(ptdesc))->page_table_lock; =20 spin_lock(pgt_lock); - vmalloc_sync_one(page_address(page), addr); + vmalloc_sync_one(ptdesc_address(ptdesc), addr); spin_unlock(pgt_lock); } spin_unlock(&pgd_lock);