From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 4D1E137D5A1 for ; Thu, 21 Aug 2025 20:08:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755806919; cv=none; b=dNGVo2lOnSc3l48995sA+SKSufLXqmGt13gUWtq+VVvJRGzCbw+5bKOYwIS3PqpJt0f3utfMIHRTkQFsGEvUJE9/9nqhOlovOBR7oVS3mnq4Nf2l2FyG/1F/Y21cD4cKpNUFApsRfbEB6rJwjT9oY19c4qkiYZZREL7hTR30pO4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755806919; c=relaxed/simple; bh=u2IvbkeQqipan9xn1FH8uDngo5kbDeDcvQE423cldao=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AyfkOCU1PNRfAyEHSH82peJf8fmfCs0ROzJcQ61e6X0Bxy5cbFyqNCjQXIIUwgeo/Gwt/7VM3hn92BE6HyQ7budyb9fjp/x5MotXV4vNkjOkUqgkU1f136g7ZdIRwuNNxyPsZA1RLosLTQq/bQDojKOiMvW+x028Jr/09PzFraw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=gWu3gNCR; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gWu3gNCR" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755806915; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=uIthYg0x+2djveHghlw2Jb9wmVGYKVQz7R4ULrPQfiU=; b=gWu3gNCRFOsVNUuWNJEaJT4/smWuwebgkhI909aCi18ILvJjj5U7YQmWWGABCmv4chp0TV zV/fj1uRmOb/F8sJKTzbOiQuWGXb4y/HFFB5tpH6G0ZKaRgehJHsUCAVNpNvX0+YSn0rDQ d62ftm4cV7f9jCf68yOkQkEp79sT6Pg= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-14-xhnEJsPYOsinrmSL3i92ZA-1; Thu, 21 Aug 2025 16:08:33 -0400 X-MC-Unique: xhnEJsPYOsinrmSL3i92ZA-1 X-Mimecast-MFC-AGG-ID: xhnEJsPYOsinrmSL3i92ZA_1755806912 Received: by mail-wr1-f71.google.com with SMTP id ffacd0b85a97d-3c584459d02so247635f8f.0 for ; Thu, 21 Aug 2025 13:08:33 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755806912; x=1756411712; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=uIthYg0x+2djveHghlw2Jb9wmVGYKVQz7R4ULrPQfiU=; b=PqYz6swFDavfXGfdT12vemX2HAbwXXjgSo3f/4ch8UNc5VPwin8+DlFztGgpa87fc7 7v7xl06zuCHjheEenyJkRCFFqe44pfeqU7e9uo2v9wAEoouQgdTQkEyHMSkgySaFVUgs cL86uwrGpIe+pBUT7U4Y/p9waQaAgNC22TKb02b/YF8TdlAtesvYr0zRH64SGYWosEXM ozdPrRa2NQPzsa3T+ao3RawOYZ8pXw+rEg/RH+MQ7gw3oW3Oi7xEuFpWAqOmsrCxPpAT 8eMKvBq+PHPVksOC6BeRtjucxUptk+4YTRRKU/QrRyqOx4P9bhe45xmPthz/q4k4uo0m HbHA== X-Forwarded-Encrypted: i=1; AJvYcCXnZ91IKjmWbDy1pdp5lOOaC5w9CZ6ecBXsKnBvWcZGB4aJDgXcOiauhHz7kIhVZzXm6Hni4IJJjVpV1b4=@vger.kernel.org X-Gm-Message-State: AOJu0YxoduVjtYq+o5nbjlHwn16O66rEOsaNzpYh9uo+rW3Gzqd0XItp sJP/cGk9knioD5pO6JLpHp+12JuqtNc0fAorzgTTs3TiJFxrEiz4mIQu7zvEESNZQsYxMj//n47 KHUAX2XRb7C6syim1PFJQ4tBjBLEXlyC9vv9VOrSB7a56IOA6S3zLcKmes8qaW7Fpvw== X-Gm-Gg: ASbGnctkMVjWNKWVnXdAlbsDBfzsc32tf1RuQTt7A47bknL3pH1EKm6NKijCuWaEsA3 P/bNG8pNoizAtXwa07MUDzxCFTYt2g3PVe0QuKjIpwjxJ7+qe70qYd368impEO2Dkv/XLRAwPsH mJvwnRSxDHPBiR+w79gen/YqDwNVWYX5ulCZLBd585HiEUpfQ3oHK+Y/ycbQR70Oe8Q2B0TjHIg N8weuBTGrbQ1bq8apfaGzUtFBju3rHr3mePSVf6vi8iqya/DaNhDrYSSaoQW/oXIT1zFEBROI3C G8dvDFoOwzjswLkby1rXWs0R/X79xIbD/agqpV45NdhPfyKfsnTrSfXs/uVW4zxMI+9Ry/TDJik CNkLmBun5OnH883V4dCqj2w== X-Received: by 2002:a05:6000:40de:b0:3a5:783f:528a with SMTP id ffacd0b85a97d-3c5dcefee22mr195271f8f.59.1755806912313; Thu, 21 Aug 2025 13:08:32 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFRe/VOMg0cdir08bDTWMwU06A85Ixelypa7wMbtHpunFYS8URS38ofNnAO5nDnYJmoWLlWSQ== X-Received: by 2002:a05:6000:40de:b0:3a5:783f:528a with SMTP id ffacd0b85a97d-3c5dcefee22mr195231f8f.59.1755806911819; Thu, 21 Aug 2025 13:08:31 -0700 (PDT) Received: from localhost (p200300d82f26ba0008036ec5991806fd.dip0.t-ipconnect.de. [2003:d8:2f26:ba00:803:6ec5:9918:6fd]) by smtp.gmail.com with UTF8SMTPSA id 5b1f17b1804b1-45b50f16eb1sm7598185e9.3.2025.08.21.13.08.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Aug 2025 13:08:31 -0700 (PDT) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: David Hildenbrand , Brett Creeley , Jason Gunthorpe , Yishai Hadas , Shameer Kolothum , Kevin Tian , Alex Williamson , Alexander Potapenko , Andrew Morton , Brendan Jackman , Christoph Lameter , Dennis Zhou , Dmitry Vyukov , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, iommu@lists.linux.dev, io-uring@vger.kernel.org, Jason Gunthorpe , Jens Axboe , Johannes Weiner , John Hubbard , kasan-dev@googlegroups.com, kvm@vger.kernel.org, "Liam R. Howlett" , Linus Torvalds , linux-arm-kernel@axis.com, linux-arm-kernel@lists.infradead.org, linux-crypto@vger.kernel.org, linux-ide@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mips@vger.kernel.org, linux-mmc@vger.kernel.org, linux-mm@kvack.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, Lorenzo Stoakes , Marco Elver , Marek Szyprowski , Michal Hocko , Mike Rapoport , Muchun Song , netdev@vger.kernel.org, Oscar Salvador , Peter Xu , Robin Murphy , Suren Baghdasaryan , Tejun Heo , virtualization@lists.linux.dev, Vlastimil Babka , wireguard@lists.zx2c4.com, x86@kernel.org, Zi Yan Subject: [PATCH RFC 30/35] vfio/pci: drop nth_page() usage within SG entry Date: Thu, 21 Aug 2025 22:06:56 +0200 Message-ID: <20250821200701.1329277-31-david@redhat.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250821200701.1329277-1-david@redhat.com> References: <20250821200701.1329277-1-david@redhat.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit It's no longer required to use nth_page() when iterating pages within a single SG entry, so let's drop the nth_page() usage. Cc: Brett Creeley Cc: Jason Gunthorpe Cc: Yishai Hadas Cc: Shameer Kolothum Cc: Kevin Tian Cc: Alex Williamson Signed-off-by: David Hildenbrand --- drivers/vfio/pci/pds/lm.c | 3 +-- drivers/vfio/pci/virtio/migrate.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/vfio/pci/pds/lm.c b/drivers/vfio/pci/pds/lm.c index f2673d395236a..4d70c833fa32e 100644 --- a/drivers/vfio/pci/pds/lm.c +++ b/drivers/vfio/pci/pds/lm.c @@ -151,8 +151,7 @@ static struct page *pds_vfio_get_file_page(struct pds_vfio_lm_file *lm_file, lm_file->last_offset_sg = sg; lm_file->sg_last_entry += i; lm_file->last_offset = cur_offset; - return nth_page(sg_page(sg), - (offset - cur_offset) / PAGE_SIZE); + return sg_page(sg) + (offset - cur_offset) / PAGE_SIZE; } cur_offset += sg->length; } diff --git a/drivers/vfio/pci/virtio/migrate.c b/drivers/vfio/pci/virtio/migrate.c index ba92bb4e9af94..7dd0ac866461d 100644 --- a/drivers/vfio/pci/virtio/migrate.c +++ b/drivers/vfio/pci/virtio/migrate.c @@ -53,8 +53,7 @@ virtiovf_get_migration_page(struct virtiovf_data_buffer *buf, buf->last_offset_sg = sg; buf->sg_last_entry += i; buf->last_offset = cur_offset; - return nth_page(sg_page(sg), - (offset - cur_offset) / PAGE_SIZE); + return sg_page(sg) + (offset - cur_offset) / PAGE_SIZE; } cur_offset += sg->length; } -- 2.50.1