From nobody Sat Feb 7 05:57:35 2026 Received: from mail-dl1-f54.google.com (mail-dl1-f54.google.com [74.125.82.54]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 03E80298CAB for ; Thu, 5 Feb 2026 01:35:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.54 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770255351; cv=none; b=qvN/yHRkXtkRfDZmkgkB5A5h4WnezbAYabwXe6XpAY4yCD13Hol/GnHvCg3bs3iuMsQ6nwPRBQOfBZETeVMd5f/UiWBwHsejMdyLMQAfpS8BBK0ERKyNirownLw11mpeHdXaDcJ3yQpV2a1HWESogpZP7+vKUrP0pe51hMYs5lI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770255351; c=relaxed/simple; bh=ObmdkjbC2W6Ftm8OZa3tEwzcrExjrV5+TDSBt1PO7ig=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qirMBYlI1/mQiI22pKj8Z7Bc8j/P2yTfRqLSLK2/cgb6R7iU4sEoZU7RJHcWyzzgrvndeJZ5NBUB1UeewmFqnE1nScCMPWzWctOoawr4oBFq/RdUf4uyOMDNRTgY0RvNqY2zbAkTp9i/x+j3zVbhWE1/cAQ08DKqEANYfUEdu8A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=bZZvhM4s; arc=none smtp.client-ip=74.125.82.54 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bZZvhM4s" Received: by mail-dl1-f54.google.com with SMTP id a92af1059eb24-124a1b4dd40so1036220c88.0 for ; Wed, 04 Feb 2026 17:35:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1770255350; x=1770860150; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=4jB+pKLVdpa0bbqVI1xb7HhQNNAElviybHSqCegf2x4=; b=bZZvhM4sJA5Ggl7iCMVcOv1/F6klnaU+PVfw3qddhbdFKgBZfD4DYnUdcn3/VHiF/j 7Qyc0fzRIJTNm7GqSrxmKE6+MqdFjq1OJbUldpM3iJigz1PdjLTwxEcpc3R2a8nrcs+3 ZparIMutK23RJP4wZGQDKUF+UpqF754/EiWhDh8zz6NJg0UaKoDvIbACNjKJUR5NiUrB EbmNGIUXrIvkYFI/ALK+bzzQqBcYxjpSuD4JcLEAixziK8ZrjSOqB1fV9vXxE4f+YsDO kie8nNoe/rnBllGgj3oRDRhDPuDNf0XWUbP7TcU8CR2XGb0MRFL5+AdVt63GvV9R76Ab kkpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1770255350; x=1770860150; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=4jB+pKLVdpa0bbqVI1xb7HhQNNAElviybHSqCegf2x4=; b=akoHNKgWXRRvXbnW15yWTRH19/I+j4GrpZWJuHcc2z9cSnzVxAbmMryuNSp9CXaLV2 O9oLKZee7keQfsYN8/fGDQly5+ygEiD6jJ7gggNRxKOvqOqrX9P53rYJ9Oxz6GKsA8SG VzKaEgeOdGXtO+OqX4wCctGbHQ9ZqBEaq2SzwaJXCG8lqob8DyJ2UFWc3ctn8M3oSf6I 32qjXZTO1i1Uy9x4ji3Wt19FldVcbzkjV6X2xVOsiyH2a5pkdH5OPglZjz8/Q/4rfWTP 6Pe6AwXf89bfXTzih+m9AVqVjer8r1G0LCmXQ4OTwkAJOZtQg8YpBBMr8im5YbP0tAEE oEtA== X-Gm-Message-State: AOJu0YxAcuaUw+t9OvHs2Ifw1XQ7qzkBOl1JDInJIFLzePvlS+ew4Ef8 gt/aQgSfTrhSclUFttFin8gv0OOsHDj1++zEDXYa4KklPZXL8rJVwHNJ9oeSBg== X-Gm-Gg: AZuq6aKhB+54t5HLYU08ZWRO0kxwK2S6WHc6rszSE1RGQ662izOYY9B7sqZe5G0RhK2 iAbiSPMc67GVepa3BCq8DiBTkZB3TLQ0PE8OXZJcTcHsKc4+d43TiiLe4wb0sjHifXK4eQdS4Ch 7W5G5ZER4t9Xin6E3F+NloGaqqmwrjGkwjcg8EoRlW8Uq/N4+WIuTms/zHGNxmek4E2KypgJkbU BJSbRTp/i+3+GGOjNl509gJv0tKuRfwRO7D06guLqWZ+ARXfmHqXa5dKu8mSQdqml69uY373jYg eInZeueCq63xdYpZh7Wn7oVCRrIEvLm0O57gyku2wmNmOEAVLfSYmgm7Q0J6x764UmZsbD/Byzm agW/DSuedqh3PowJLNYWvrYkHXcctlbGlvIehyP1GpCyKEuwAiJgdtZcZIf/rWLVu3W9Tmf8JnW wp9Wh8HIS6FDrvtInQA5gmftyVIHxy9qdoF1GyTmHVTJU= X-Received: by 2002:a05:7022:10f:b0:119:e56b:9581 with SMTP id a92af1059eb24-126f4771da3mr1937601c88.6.1770255349537; Wed, 04 Feb 2026 17:35:49 -0800 (PST) Received: from fedora (c-67-164-59-41.hsd1.ca.comcast.net. [67.164.59.41]) by smtp.googlemail.com with ESMTPSA id a92af1059eb24-126f4e0f98asm3424982c88.5.2026.02.04.17.35.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Feb 2026 17:35:49 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org, "Mike Rapoport (Microsoft)" , Dave Hansen Cc: akpm@linux-foundation.org, "Matthew Wilcox (Oracle)" , Andy Lutomirski , Peter Zijlstra , "Vishal Moola (Oracle)" Subject: [PATCH v4 2/4] x86/mm/pat: Convert pte code to use ptdescs Date: Wed, 4 Feb 2026 17:35:25 -0800 Message-ID: <20260205013527.322157-3-vishal.moola@gmail.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260205013527.322157-1-vishal.moola@gmail.com> References: <20260205013527.322157-1-vishal.moola@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" We need all allocation and free sites to use the ptdesc APIs in order to allocate them separately from regular pages. Convert these pte allocation/free sites to use ptdescs. Also, rename *_pte_page() functions to *_pte(). Rename them now to avoid any confusion later. Eventually these allocations will be backed by a ptdesc not a page, but that's not important to callers either. Signed-off-by: Vishal Moola (Oracle) --- arch/x86/mm/pat/set_memory.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/x86/mm/pat/set_memory.c b/arch/x86/mm/pat/set_memory.c index 6c6eb486f7a6..c6c68fbbb046 100644 --- a/arch/x86/mm/pat/set_memory.c +++ b/arch/x86/mm/pat/set_memory.c @@ -1400,7 +1400,7 @@ static int collapse_large_pages(unsigned long addr, s= truct list_head *pgtables) return collapsed; } =20 -static bool try_to_free_pte_page(pte_t *pte) +static bool try_to_free_pte(pte_t *pte) { int i; =20 @@ -1408,7 +1408,7 @@ static bool try_to_free_pte_page(pte_t *pte) if (!pte_none(pte[i])) return false; =20 - free_page((unsigned long)pte); + pgtable_free_addr(pte); return true; } =20 @@ -1435,7 +1435,7 @@ static bool unmap_pte_range(pmd_t *pmd, unsigned long= start, unsigned long end) pte++; } =20 - if (try_to_free_pte_page((pte_t *)pmd_page_vaddr(*pmd))) { + if (try_to_free_pte((pte_t *)pmd_page_vaddr(*pmd))) { pmd_clear(pmd); return true; } @@ -1537,9 +1537,9 @@ static void unmap_pud_range(p4d_t *p4d, unsigned long= start, unsigned long end) */ } =20 -static int alloc_pte_page(pmd_t *pmd) +static int alloc_pte(pmd_t *pmd) { - pte_t *pte =3D (pte_t *)get_zeroed_page(GFP_KERNEL); + pte_t *pte =3D (pte_t *) pgtable_alloc_addr(GFP_KERNEL, 0); if (!pte) return -1; =20 @@ -1600,7 +1600,7 @@ static long populate_pmd(struct cpa_data *cpa, */ pmd =3D pmd_offset(pud, start); if (pmd_none(*pmd)) - if (alloc_pte_page(pmd)) + if (alloc_pte(pmd)) return -1; =20 populate_pte(cpa, start, pre_end, cur_pages, pmd, pgprot); @@ -1641,7 +1641,7 @@ static long populate_pmd(struct cpa_data *cpa, if (start < end) { pmd =3D pmd_offset(pud, start); if (pmd_none(*pmd)) - if (alloc_pte_page(pmd)) + if (alloc_pte(pmd)) return -1; =20 populate_pte(cpa, start, end, num_pages - cur_pages, --=20 2.52.0