From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <pve-devel-bounces@lists.proxmox.com> Received: from firstgate.proxmox.com (firstgate.proxmox.com [IPv6:2a01:7e0:0:424::9]) by lore.proxmox.com (Postfix) with ESMTPS id 40CB11FF16E for <inbox@lore.proxmox.com>; Tue, 29 Oct 2024 14:18:00 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 14D9036F1F; Tue, 29 Oct 2024 14:18:02 +0100 (CET) Message-ID: <9ddd8807-5623-484f-aa5d-b751d732ae53@proxmox.com> Date: Tue, 29 Oct 2024 14:17:59 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US To: Proxmox VE development discussion <pve-devel@lists.proxmox.com>, Christoph Heiss <c.heiss@proxmox.com> References: <20241022101941.329529-1-c.heiss@proxmox.com> <20241022101941.329529-3-c.heiss@proxmox.com> From: Aaron Lauterer <a.lauterer@proxmox.com> In-Reply-To: <20241022101941.329529-3-c.heiss@proxmox.com> X-SPAM-LEVEL: Spam detection results: 0 AWL -0.037 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% DMARC_MISSING 0.1 Missing DMARC policy KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment RCVD_IN_VALIDITY_CERTIFIED_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_RPBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. RCVD_IN_VALIDITY_SAFE_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: Re: [pve-devel] [PATCH docs 2/3] pci-passthrough: mention that `intel_iommu=on` is the default for 6.8+ X-BeenThere: pve-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE development discussion <pve-devel.lists.proxmox.com> List-Unsubscribe: <https://lists.proxmox.com/cgi-bin/mailman/options/pve-devel>, <mailto:pve-devel-request@lists.proxmox.com?subject=unsubscribe> List-Archive: <http://lists.proxmox.com/pipermail/pve-devel/> List-Post: <mailto:pve-devel@lists.proxmox.com> List-Help: <mailto:pve-devel-request@lists.proxmox.com?subject=help> List-Subscribe: <https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel>, <mailto:pve-devel-request@lists.proxmox.com?subject=subscribe> Reply-To: Proxmox VE development discussion <pve-devel@lists.proxmox.com> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: pve-devel-bounces@lists.proxmox.com Sender: "pve-devel" <pve-devel-bounces@lists.proxmox.com> Looking at the surrounding context, I would rework this section even more. Before I just apply my approach, what do you think about the following change? --- diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc index 4f19f2a..ca07692 100644 --- a/qm-pci-passthrough.adoc +++ b/qm-pci-passthrough.adoc @@ -63,19 +63,18 @@ some configuration to enable PCI(e) passthrough. .IOMMU -First, you will have to enable IOMMU support in your BIOS/UEFI. Usually the +You will have to enable IOMMU support in your BIOS/UEFI. Usually the corresponding setting is called `IOMMU` or `VT-d`, but you should find the exact option name in the manual of your motherboard. -For Intel CPUs, you also need to enable the IOMMU on the -xref:sysboot_edit_kernel_cmdline[kernel command line] kernels by adding: +With recent kernels (6.8 or newer), `IOMMU` should be enabled automatically. +On older kernels, it was necessary to enable it on Intel CPUs via the +xref:sysboot_edit_kernel_cmdline[kernel command line] by adding: ---- intel_iommu=on ---- -For AMD CPUs it should be enabled automatically. - .IOMMU Passthrough Mode If your hardware supports IOMMU passthrough mode, enabling this mode might On 2024-10-22 12:19, Christoph Heiss wrote: > Signed-off-by: Christoph Heiss <c.heiss@proxmox.com> > --- > qm-pci-passthrough.adoc | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/qm-pci-passthrough.adoc b/qm-pci-passthrough.adoc > index c3dd184..70e33f2 100644 > --- a/qm-pci-passthrough.adoc > +++ b/qm-pci-passthrough.adoc > @@ -74,7 +74,8 @@ xref:sysboot_edit_kernel_cmdline[kernel command line] kernels by adding: > intel_iommu=on > ---- > > -For AMD CPUs it should be enabled automatically. > +For AMD CPUs it should be enabled automatically. For Intel CPUs this is also > +the default since the 6.8 kernel series. > > .IOMMU Passthrough Mode > _______________________________________________ pve-devel mailing list pve-devel@lists.proxmox.com https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-devel