From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1585F3D96A; Sat, 14 Dec 2024 18:39:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734201570; cv=none; b=VoPurDihiSsNUDO2MzPzFtto3rTZZdd8RQ3dXeVC7G8DT6iGJqKH6xoufuN67C3/hm42gKDSBs7at0v/N2PGgoAr4tyU3rNr6jFHe9/o9G5M8gCBeiYQKthmN9c78ha6E+MQ8De7fvoWzNT9TkOFQzzweg8c0AQdyjZT44oBGuA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734201570; c=relaxed/simple; bh=690nWsXz4Lf8yy+mzkl2dnwSFpMN1lTj0VULWgijlAU=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=mggyI7yRoAADiRLCcDrmXV/F6m7HUC45gU/f+EWyi7eRwEw3HA/RoxV67Jy50us8bF3rZH8l8QTjXEWKc9QW+SPGnNbyAFT4tZy/6z1CaAR0WZmgJLd5dF93Z5GZhd9Yt1dl9C0TYir6KrpwkqsdWo3wJ6IpR5UIw761p/PNwwE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=oBA5WTgl; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="oBA5WTgl" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=uEzDBKUgWX6jFkMv5xG4qzSLHSlbdmivdkGAeIJ/mE8=; b=oBA5WTglzbT94FzYbKTyyMZT8O T84h7fLYg9ZWCKUlaCIQX66FGXqejGTz0echBNFiJY8ksiLRqqQ2HUIhzVqRDYQxbkwEZebpQOKdK D04mdZ0KZ2FX7PUpaRlvdifIvv09KnhEJCaE9MOGg/LVdTLmb5JRzGF4CDR1TSDPF2/MtC4v+VFLw emX/qE/CMjVIHztj0rUl9p7qa5HbEvVqq2TKx2SIOEoIKwUdexyDEJEGMPBP0A4RGbMIlIcixTTWm PyP2rf+OeRz2CtbIKzRySrc9c+1xwWLHbMQospqim7cZPdI404VCuwU+W9NPk0jUiiL6OwT5fzDNx JoV7BeIA==; Received: from 77-249-17-89.cable.dynamic.v4.ziggo.nl ([77.249.17.89] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tMX2z-00000004OWx-2QfO; Sat, 14 Dec 2024 18:39:26 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id CF0E930035F; Sat, 14 Dec 2024 19:39:24 +0100 (CET) Date: Sat, 14 Dec 2024 19:39:24 +0100 From: Peter Zijlstra To: Ranguvar Cc: "regressions@lists.linux.dev" , "regressions@leemhuis.info" , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" Subject: Re: [REGRESSION][BISECTED] from bd9bbc96e835: cannot boot Win11 KVM guest Message-ID: <20241214183924.GC10560@noisy.programming.kicks-ass.net> References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Sat, Dec 14, 2024 at 06:30:11AM +0000, Ranguvar wrote: > Hello, all, > > Any assistance with proper format and process is appreciated as I am > new to these lists. After the commit bd9bbc96e835 "sched: Rework > dl_server" I am no longer able to boot my Windows 11 23H2 guest using > pinned/exclusive CPU cores and passing a PCIe graphics card. This > setup worked for me since at least 5.10, likely earlier, with minimal > changes. > > Most or all cores assigned to guest VM report 100% usage, and many > tasks on the host hang indefinitely (10min+) until the guest is > forcibly stopped. This happens only once the Windows kernel begins > loading - its spinner appears and freezes. Do the patches here: https://lkml.kernel.org/r/20241213032244.877029-1-vineeth@bitbyteword.org help? I'm not really skilled with the whole virt thing, and I definitely do not have Windows guests at hand. If the above patches do not work; would it be possible to share an image or something?