From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 C5AC93B29E for ; Mon, 11 Aug 2025 13:03:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754917405; cv=none; b=YsE5tWCjiSteJPg0Pl0id7rJYfa4g6fXeQ+xFwtOVZV25X/qrKaC7rEbeEccwosHW5PRQahLWrOsM36jnS719+p0viCiy2a044crUVqpcvgqe8LfhpLZ3PPD4JZB+PZa+hTG4hvIcrOmVsMg+rhLizc68s+rjygdD1IDJTEABU4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754917405; c=relaxed/simple; bh=un+P00qFkEuDAS+YdBbbQFUvom5OnKIHpp4vkbh6BLo=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=kkX4VwR2UfderudxVpnwW6vLeS2Ya2x+nXvf1nX69c7qX2I4TaLA08Q5NOsXuacq2wPY/ncfO9t0BXpFuMaTL6/6AT9d4KDOFYCVZClimq6IT8w7bAMyl8JoRwA6pBV2ERjzezKq1Ji8LTKlM3Yyuvc6fZ7lIPTxDtiFi4canY8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=XZO+njxB; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=Nrv9aKmS; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="XZO+njxB"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Nrv9aKmS" From: Thomas Gleixner DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1754917402; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uak9uMoSf1hFQNv+gxLqBrTo+PAvamtwLxZZOi8jwac=; b=XZO+njxBaetbKcIwqfljGMkgIa5Zeyna5UbnXeGA5/ZWOVWdem0bMc0gbPhwaqJibZppBN lhJB/aTzKYeLDzgliK6Pmwk0o3YVcSSCM9qULRAau3dr2ec1RDUit/lDnNIk2zOGBJNGFw L54UYuQurl26uH529YlO0OAyKS9yv+65PiGv5iFCQIArxV2KXkuEMNtY7JoORNOPfzrPc5 FfVXlXLOl4h1N0E1fMhvvMc0eYR9EWNfLS2OsyObj1aqQEV9l2T1kg6qfX99uNyuyF2r7X oaLmX99jDar4TuvZgTOSVZ3P59HJjmfc+KZ87NpyvccPxvG8tZdv9w7fr7rHAQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1754917402; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=uak9uMoSf1hFQNv+gxLqBrTo+PAvamtwLxZZOi8jwac=; b=Nrv9aKmSaQqacXYMrZ9mwNow7CXAggaX2DJMyZkYm+KYRyt21towuYSwZZ+FNdT5BQS8+c jubCXSbpCj8csPAQ== To: Coiby Xu Cc: linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, kexec@lists.infradead.org, Marc Zyngier Subject: Re: [Regression] kdump fails to get DHCP address unless booting with pci=nomsi or without nr_cpus=1 In-Reply-To: <87bjom8106.ffs@tglx> References: <87bjom8106.ffs@tglx> Date: Mon, 11 Aug 2025 15:03:21 +0200 Message-ID: <878qjq80yu.ffs@tglx> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Mon, Aug 11 2025 at 15:02, Thomas Gleixner wrote: CC+ Marc > On Mon, Aug 11 2025 at 11:23, Coiby Xu wrote: >> Recently I met an issue that on certain virtual machines, the kdump >> kernel fails to get DHCP IP address most of times starting from >> 6.11-rc2. git bisection shows commit b5712bf89b4b ("irqchip/gic-v3-its: >> Provide MSI parent for PCI/MSI[-X]") is the 1st bad commit, >> >> # good: [7d189c77106ed6df09829f7a419e35ada67b2bd0] PCI/MSI: Provide >> # MSI_FLAG_PCI_MSI_MASK_PARENT >> git bisect good 7d189c77106ed6df09829f7a419e35ada67b2bd0 >> # good: [48f71d56e2b87839052d2a2ec32fc97a79c3e264] irqchip/gic-v3-its: >> # Provide MSI parent infrastructure >> git bisect good 48f71d56e2b87839052d2a2ec32fc97a79c3e264 >> # good: [8c41ccec839c622b2d1be769a95405e4e9a4cb20] irqchip/irq-msi-lib: >> # Prepare for PCI MSI/MSIX >> git bisect good 8c41ccec839c622b2d1be769a95405e4e9a4cb20 >> # first bad commit: [b5712bf89b4bbc5bcc9ebde8753ad222f1f68296] >> # irqchip/gic-v3-its: Provide MSI parent for PCI/MSI[-X] > > There were follow up fixes on this, so isolating this one is not really > conclusive. > > Is the problem still there on v6.16 and v6.17-rc1? > > Thanks, > > tglx