From nobody Mon May 11 04:52:14 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52117C433FE for ; Wed, 13 Apr 2022 21:22:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239050AbiDMVYw (ORCPT ); Wed, 13 Apr 2022 17:24:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239038AbiDMVYj (ORCPT ); Wed, 13 Apr 2022 17:24:39 -0400 Received: from mail-ej1-x635.google.com (mail-ej1-x635.google.com [IPv6:2a00:1450:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8B4B66C97; Wed, 13 Apr 2022 14:22:16 -0700 (PDT) Received: by mail-ej1-x635.google.com with SMTP id k23so6509134ejd.3; Wed, 13 Apr 2022 14:22:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LbnAeJu+mSJrOhK0YF2KczoT41D0h8PfC3LbVNUGzpE=; b=aa+5LyswOpxqjG7WzCPpOCdbgp/WuK2qXlP817DNGTK6jUIufD5TzDs9RA2MsJln1+ 0Z1lvg7BMweewUwAduqBkG49jSLyPlzD9kj6T816ZVKoAnlVMrxCNvd1oSKsRfYUHfeC AQsxsu7H8tANDPU42PgNsaHyv0dQGPMzFr2rFPJNsIpQokqz7+ZAAES2h93mssw7W6ZE TPP6rEOtrkHPw2Rd/mPb6YYuQcnObWMqeIiACyaUxjwN6YacZTnf18qAheRAd40FK+7V z57zj7n4iKeNu1CYELHZbw3k3tknVlfG8nZPMdsu7QPoa8r3NJEYjs2enKa4Y5gEhUld WTLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=LbnAeJu+mSJrOhK0YF2KczoT41D0h8PfC3LbVNUGzpE=; b=Z8aqcu3AN0d8YUTmutzq+4cuRIa171af1EFZUk3ct6EKW678CcsW5l4+2KHcQHpwOd /K5ASkKrIIp9Z1Z6Dz4BHRxdymmxqMVfeUi+hkTDlfzAZE2XfP5En7JXTPOwQaiSC/jA s051T439PUfNLADi/OoRKVg+0jWHrhD/TjdAgPHTBoIL6MSdvvq/kDdq/O9LXcxNGshd 2b3eQMC/7z06/DtNYAQF/Z7NVedwe4+nO0wITT3LN4tNO3a47Hvd5R3Q/IqdAXI7K48g 8igmX2E/gK/ThWTrRto2MBSLV44n5XMouT66sfvJ6CyKS4Zuu2UXbgQW3svHwPn21+Uj qH8g== X-Gm-Message-State: AOAM533JgvLFtbWNQRdJVGvZLHs9rZsWXnmOvR4gfkh1irqnFMZa3bMG +QwMCbTdwCxky8zrjB++AUQ= X-Google-Smtp-Source: ABdhPJxvooD4u6SAjw+4A4hPyn40ux/U5r40VIzqQDjzdLtvQHLsWPGxk146dW4t8vuSsZKQFmNgbQ== X-Received: by 2002:a17:907:3f0f:b0:6e8:3b05:cc6 with SMTP id hq15-20020a1709073f0f00b006e83b050cc6mr30886644ejc.91.1649884935461; Wed, 13 Apr 2022 14:22:15 -0700 (PDT) Received: from localhost.localdomain (host-79-43-11-75.retail.telecomitalia.it. [79.43.11.75]) by smtp.gmail.com with ESMTPSA id k22-20020a508ad6000000b00420bd71e06bsm30883edk.79.2022.04.13.14.22.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Apr 2022 14:22:14 -0700 (PDT) From: "Fabio M. De Francesco" To: Mauro Carvalho Chehab , Sakari Ailus , Greg Kroah-Hartman , Hans Verkuil , Tsuchiya Yuto , Martiros Shakhzadyan , Hans de Goede , linux-media@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Ira Weiny , outreachy@lists.linux.dev Cc: "Fabio M. De Francesco" Subject: [PATCH] staging: media: atomisp: Use kmap_local_page() in hmm_set() Date: Wed, 13 Apr 2022 23:22:10 +0200 Message-Id: <20220413212210.18494-1-fmdefrancesco@gmail.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The use of kmap() is being deprecated in favor of kmap_local_page() where it is feasible. In file pci/hmm/hmm.c, function hmm_set() calls kmap() / kunmap() where kmap_local_page() can instead do the mapping. With kmap_local_page(), the mapping is per thread, CPU local and not globally visible. Therefore, hmm_set()() is a function where the use of kmap_local_page() in place of kmap() is correctly suited. Convert the calls of kmap() / kunmap() to kmap_local_page() / kunmap_local(). Signed-off-by: Fabio M. De Francesco Reviewed-by: Ira Weiny Tested-by: Hans de Goede --- drivers/staging/media/atomisp/pci/hmm/hmm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm.c b/drivers/staging/= media/atomisp/pci/hmm/hmm.c index 6394385b6637..46ac082cd3f1 100644 --- a/drivers/staging/media/atomisp/pci/hmm/hmm.c +++ b/drivers/staging/media/atomisp/pci/hmm/hmm.c @@ -563,7 +563,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) idx =3D (virt - bo->start) >> PAGE_SHIFT; offset =3D (virt - bo->start) - (idx << PAGE_SHIFT); =20 - des =3D (char *)kmap(bo->page_obj[idx].page) + offset; + des =3D (char *)kmap_local_page(bo->page_obj[idx].page) + offset; =20 if ((bytes + offset) >=3D PAGE_SIZE) { len =3D PAGE_SIZE - offset; @@ -579,7 +579,7 @@ int hmm_set(ia_css_ptr virt, int c, unsigned int bytes) =20 clflush_cache_range(des, len); =20 - kunmap(bo->page_obj[idx].page); + kunmap_local(des); } =20 return 0; --=20 2.34.1