From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f180.google.com (mail-yw1-f180.google.com [209.85.128.180]) (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 CF64D2AD39 for ; Mon, 19 Feb 2024 11:12:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.180 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708341152; cv=none; b=MjWa9w6Ai9pKJx59sowrkxYZT4fZmJ2OYTjLqHXVq6DhHA+doHdt6+DWADXugLgC9CwG0P4FIfO310vGUg90wmog2D1aHK2jZ8ysLzUmGKbxItBFJG2hSZI6mTSdnHOCdjPCYrW8Exwj/JyvXbwICYcozHUjYAY78oJHxa1XfSE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708341152; c=relaxed/simple; bh=wtUXsOPdRcR9ceMZSYyVlPOgSE3YKBQ5v6cj1iovINY=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=vBFK33bFvO/3BEWeZtQVkmr2KKvXHCsbeu58kX1EGmL1K82A5Ji4F6U5ZKOg9BNY0WdHrcJYelcvNJ2gCfIdIpdqAS9qF5KpPpJDym22+gjiVbgNtzsq4sMRZ96ag1kQkA2bT/mOqnJQdhIE7Y12D9QF287OwywnvY+arV1Nbws= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=CdMc/Mcb; arc=none smtp.client-ip=209.85.128.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="CdMc/Mcb" Received: by mail-yw1-f180.google.com with SMTP id 00721157ae682-607f94d0b7cso30105797b3.3 for ; Mon, 19 Feb 2024 03:12:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1708341150; x=1708945950; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=wtUXsOPdRcR9ceMZSYyVlPOgSE3YKBQ5v6cj1iovINY=; b=CdMc/McbGRsI0pT5Pv28fWhyZkDSqelHCBKLLpZS32fV3oyhcfylpatBgU36VYnfeg ct/zaZ3BmHHnV/Uo0Zae9vTrwc+q4PLzDXepBFhl8mELHb14YNDYOD+ddjhgg8nKj9Ve /FIKCTZyjqJb5W1UHFcOqZDNSlvJtVJDuCpkhvWRvL3WV1ip6Wu8U3if3m6FLygMvYOJ PNOjlaTK2zd3b/s3L88jr3TrA0VathD8618qAevDBDYiKjp7UknNGEXX4khDn8ZYp/Ca sTNNgcwmOXS821b9zmKktHh766RVzS6WTVZB/kXafPTcGyAfm1NvFIE3L7o9iYOXclwU jD8A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708341150; x=1708945950; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=wtUXsOPdRcR9ceMZSYyVlPOgSE3YKBQ5v6cj1iovINY=; b=E1jCCr8AaDWncVsBw/dTbmLCVdDz8ZjELxewmzHhR8diNlhAMn2uPp6URGb6jFuWux j2gvtttfZ1rvrz0WdfjSjAk+t1Bz5jUhAYQrGZR8HQ2EtgBU/P1tbrIr7FwBB+wA5H1g KYw/6GlRxJvLuEosoCPmxghmyBG9tIl7oOSYf3J22pioRwhR/AkVBhFTr74opHdFW+Jx fzBcLpJI2eNih190Oyv5mmANafKWwvLQlaym0E/ERUQ1mHsjxBGojOlXFNCgjCdWRlR6 RpRD5zkihs9EDNoynvRqWzSRpPBhoLzw/qR1IAFdEUa4JDn5QgSwtxMMuleMZZDOLXYh gTqQ== X-Forwarded-Encrypted: i=1; AJvYcCWobKAm695m/C1XwaWTbDsq+jgpmuPG0+7j8Xy3vjvYxigNjASrZRVoxlYZOX63CENNKxXqsE10j/sReq3la0UwlkNGaQhAKe6yL2E/ X-Gm-Message-State: AOJu0YzbCYdZlNa11LakuC1AC4hh3O560FjpKQc0CtrQMn0X6v7PG9zX CbjBzXIty1CAHKJCClEIrGp/rRVkPSpqMxDtUnS/5pE6+m41VreXpRlN05JvZN90SdHJtOLvNdT u0/Ywhq0lBVv54QIHLL4y200b3BI4+M0iWBCT X-Google-Smtp-Source: AGHT+IFULDqCDrcjS4TprptID6BJoQo2zNTcSGt/cTpMvyAWR54MLnD28lbpdsUa7q87zM7LGe1fXbZHWfZP+xtxH2U= X-Received: by 2002:a0d:cb0e:0:b0:607:ce8d:8839 with SMTP id n14-20020a0dcb0e000000b00607ce8d8839mr11569382ywd.25.1708341149610; Mon, 19 Feb 2024 03:12:29 -0800 (PST) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20240208152808.3712149-1-howardyen@google.com> <20240213055426.GA22451@lst.de> In-Reply-To: <20240213055426.GA22451@lst.de> From: Howard Yen Date: Mon, 19 Feb 2024 19:12:18 +0800 Message-ID: Subject: Re: [PATCH v3] dma-coherent: add support for multi coherent rmems per dev To: Christoph Hellwig Cc: m.szyprowski@samsung.com, robin.murphy@arm.com, gregkh@linuxfoundation.org, andriy.shevchenko@linux.intel.com, rafael@kernel.org, broonie@kernel.org, james@equiv.tech, james.clark@arm.com, masahiroy@kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Feb 13, 2024 at 1:54=E2=80=AFPM Christoph Hellwig wrot= e: > > On Thu, Feb 08, 2024 at 03:28:05PM +0000, Howard Yen wrote: > > Add support for multiple coherent rmems per device. > > Why? I tried to upload the patch to support multiple coherent rmems per device because in some system, the primary memory space for the device might be limited, so that add multiple coherent rmems support per device to satis= fy the scenario. --=20 Regards, Howard