From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-oa1-f53.google.com (mail-oa1-f53.google.com [209.85.160.53]) (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 CADEF66AB8 for ; Thu, 14 Dec 2023 21:45:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=purestorage.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=purestorage.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=purestorage.com header.i=@purestorage.com header.b="UHh9nBU3" Received: by mail-oa1-f53.google.com with SMTP id 586e51a60fabf-20315d10afaso23943fac.0 for ; Thu, 14 Dec 2023 13:45:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=purestorage.com; s=google2022; t=1702590347; x=1703195147; darn=vger.kernel.org; h=references:in-reply-to:message-id:date:subject:cc:to:from:from:to :cc:subject:date:message-id:reply-to; bh=c10wTDKGWx40+Vti3rmzZrdQoTCm+JYREO+5RZnJZkA=; b=UHh9nBU3Xdq01s1oEUuoT38ZK58dwPgY2PHrkz1BmwdZoq0x01v5neOTR9/dDLVh+h jsS/+BMpel1ld5j4vec+pNps+oPrayssaTNHp/EEfmwugqTuEe0FMPahM2S6Q9f6speQ kMzN4NGwmIh5PzvILKCq7w66E3jsNFsPxk3RNwiPf3JPS+Kmfx0+Ok4YySEyK0IdGsTw Nvdsl+QL/LBVJH1sprhxEe5dkeMjkHALodFtkAxUipWu1jrkwQS+/Z7784LC36sfhL62 +Vcso19toDLtUfmcP+NLo7j74+BBz1ycqjNy93b/BpR/V6jRBDZYlgZcpHEVsEtjZJkg 69XA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702590347; x=1703195147; h=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=c10wTDKGWx40+Vti3rmzZrdQoTCm+JYREO+5RZnJZkA=; b=GA6mtshU+OeWjUVv5JdzYPRXPb8xSJJyINdu3GpKpTMSAECPUQgKGBicX69vyG47d2 zBoDFoPcPAPxyzcmr2fLE4T27Ole/QNVou/EWo/wTbECsIM4ABiS776KoH+r9MFaPWff +MLN5Z6CE3wK3Gk4RZ8hSmB1ULsTSWw1pIuF3IRczMK89eLj91NwwAS+5LB4eTO46ZOr VRjypd+Nvj9PY91vPZ+MYvfKYvcoEl/qYM7PjdYGb0Csk5YbXfxbqY5OOakVCP0vZq85 nsvXWLWdCktCrb2hzB8fNT7YtnvcGciytoK+zOjhmUWGxX0W6AFWBVDNDx5f8jwNKLZw BWQA== X-Gm-Message-State: AOJu0YxdiOWNcSvOWweqTFSrifLMFmR9+pCAh2iP2GPbahaxDxpDePqy WwFkDM0TuL4nGKIgEUAJHwEkQ6tgylXklA5Igjc= X-Google-Smtp-Source: AGHT+IF+GBfzMrtU6Y1DmkKONVgvTc0x2UUy7AoaDhukMf1eYZovRHxpOzRj+/aiUMtMj7rChQaPaA== X-Received: by 2002:a05:6871:5b22:b0:1fb:75a:c442 with SMTP id op34-20020a0568715b2200b001fb075ac442mr10423148oac.107.1702590346704; Thu, 14 Dec 2023 13:45:46 -0800 (PST) Received: from dev-mattc2.dev.purestorage.com ([208.88.159.128]) by smtp.googlemail.com with ESMTPSA id pf11-20020a0568717b0b00b001faebb7ff77sm4729234oac.56.2023.12.14.13.45.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 Dec 2023 13:45:46 -0800 (PST) From: Matthew W Carlis To: helgaas@kernel.org Cc: bhelgaas@google.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, mattc@purestorage.com, mika.westerberg@linux.intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v3] PCI/portdrv: Allow AER service only for Root Ports & RCECs Date: Thu, 14 Dec 2023 14:45:40 -0700 Message-Id: <20231214214540.4542-1-mattc@purestorage.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231214202856.GA1101963@bhelgaas> References: <20231214202856.GA1101963@bhelgaas> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Hi Bjorn. Thank you for the quick response, it looks correct that this is first in v6.2. My thinking is that the kernel should use DPC on a switch port if it would use it on a root port when dpc-native is not set. I would be happy to post a formal patch for this. Maybe using host->native_aer is the correct way to ensure that the kernel in this system will be using AER, maybe not on this device but it will on some device. Then, can proceed to use DPC on the device. I will submit something in the next few days here. Also, sorry if you received this email twice.. Mistake on my part. Cheers! -Matt