From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793947436; b=Z9gmaiYtfZ/rARxNIM0PzVOI0BkJx6rM+hvQWG15qiDKYyM8aNTu2PQYldlNrKztCfHr klSVoTEvievy/E7quX7IVXIafJSrJz45XZ/hD67Y0tmWXgcfeBstDZNl7AiXSLSyxtGGQ JqqrNaDY8JM49ynivdQEJ8UImolaTKwlvsGoI+czhugQGf0PeijADwIfmnoQGMS3ZoX+r p3h7rUcjDoJyK3s7yKmUqkIwi/sKEa5TAZFJfuytU655M7/pBo7z6En0mPCODUJM3Jfvd OZWLhfLswIXS+fYy1jj2oJFHpRCHmjlAihiQTvoHidJM3tbX973Vj7cOOtmWL5oC3kQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793947436; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=/eKRQv541JhaHN/nOwagDfXo74KG/VcEeaIZEwenKbs=; b=1QKjX4dmZXdVQTfghkRniDy+vYzOD5bKzLlJ5icx2e2bDucyadBIm/9yK4SXrXLtxW7z mmr6E7Q8Tk6rqYQiemMwLAic2gB8scekdYYd09v/KGgc0Bndhd/AGt9C09avL62Bysu30 JhHxQZGY2Y1dHPD2lpMpHBX43+0cQGKUje4XuwkjYNYHS9cinemVdplROB9IKkshHyW5z dLTSvUr4T7aK24APhFlYFTkDJkIp05ppSkScm3/LyEQgQ5DyvV/Ff3ynmxUt57g51Kh4W uL8dqwMpD+RgnSheHgyeTZAj6gylMlou7ekP/iqAMxJpdlQJ5SjCc6piTsoaUHVx+Fw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=h1rpAUe3; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D846606A32D for ; Fri, 6 Nov 2026 06:43:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=h1rpAUe3 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EB011F008A1; Fri, 6 Nov 2026 06:43:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793947436; bh=/eKRQv541JhaHN/nOwagDfXo74KG/VcEeaIZEwenKbs=; h=From:Subject:Reply-To:To:In-Reply-To:References:Date; b=h1rpAUe3DAuN5L34ab6wnxESAY6+F89xyaiIBvTh2L0hc7lj5YhatbRyd6dTGRqjA LoYyI1+JvhN2hub5xvQerEj/deGfrdSBJnH0GTt9cpLxJDJRvXoJ71Obkkiq5SGq8h pGMFUMtJBNJ2ufyS+O0GnnRTtnN6QPCQTaXkG/1D0Hdr/tJDjaPK6wit07DxewbLva 8Cy8tGwefuN1XPLnn9GeKjnk0ycOHcPEDcu5UbQCFJWlmN9uL9NRMMBa++hpfB5vv2 AikaWy7wjEU6ulsRekZz5EQdX/NzM51SQ45H4D02Cp37XWN/Mmmn6DmFVP4dZdbFek HfNftjx/umRXQ== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v2 15/23] drm/amdgpu: Use the SGT mapping type Reply-To: sashiko-reviews@lists.linux.dev To: "Alistair Popple" , linux-rdma@vger.kernel.org In-Reply-To: <20261105-dma_mapping_type_v4-v2-15-78b8dc9ae80a@nvidia.com> References: <20261105-dma_mapping_type_v4-v2-0-78b8dc9ae80a@nvidia.com> <20261105-dma_mapping_type_v4-v2-15-78b8dc9ae80a@nvidia.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 06 Nov 2026 06:43:55 +0000 X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > From: Jason Gunthorpe >=20 > Similar to xe, amdgpu wants to check pci_p2pdma_distance(), and > only needs that if peer2peer can be supported by the GPU. It can migrate = to > system memory and support non-p2p DMA as well. >=20 > Further it supports a private non-PCI XGMI path. For now hack this on top > of a SGT type, but eventually this is likely better off as its own mapping > type. >=20 > Add two exporter SGT mapping types, one that matches P2P and one that > matches all of the non-p2p. The pin and map code will force migrate if > the non-p2p one is matched. >=20 > Signed-off-by: Jason Gunthorpe > Signed-off-by: Alistair Popple Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261105-dma_mappin= g_type_v4-v2-0-78b8dc9ae80a@nvidia.com?part=3D15