From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 1199946D2C8; Tue, 21 Jul 2026 16:28:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784651304; cv=none; b=ZKy+ybF4TrEe5cDRBaSuhCYXjECwrR6JoXOKkCk2FLaXTGxz9Cn1J4kWjY8pJ6g4opAnbrlwgO8CyM2GBp9patyHZQzsgGj2DRw5+VRIK4krSt1MJj7IUeJUWk7gVJaKDuf3+oVoKTEH2qqEk4dWtesHXuC36NNQa/VvO9ywnMM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784651304; c=relaxed/simple; bh=0g1p8YKIE71TU+sqJW4vyCLd3WmftBg8dmFfLAjv/js=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=biIC7Gm/Y9Rm8iqNU9W+STVlhnzvOnVnMzk/mt+Jtnubb400hSNHYwlrTEiGP5Ks3n+lwVfS8/sqN9X0u/znMO1hgxeBOaObvzLBvGnGmuyXc3Hu0v/Wd19SasSRiyk+7db0IDcXDYyYtjM/1TJDlBO5SlUK8j8oP4ukc2M7sEQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A0uhu9fP; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="A0uhu9fP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BE92A1F00A3A; Tue, 21 Jul 2026 16:28:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784651303; bh=6VO5TFovKdiYaUF1XpN9HMdtCIy6aNvr3B6X5YAjvcA=; h=Date:From:To:Cc:Subject:In-Reply-To; b=A0uhu9fPlgHS9/Glw7FYvYs7AE54IX9obz/o9Z67uON7wV9Ts2ERuEQyHbmU2r5xi GuZNWat5HQ+rVFB7GOnFJfKwaCpKb78vxD8Ll3CSIW/jJQA+/LmEcziWrmk8TZs+/K Kw+BHAe3/Xx0gkFAd/eTROvTUiVHOYOKxE/GRNzQU2uB5N3yx7sxPSIYVx2pPzQStF 3r5+kHjPBNEDAIPB6vH8preCZHQYx1S/zDIHtcJbYZGQ7fW/fSCu3wlX4iEQWVHe06 4zKBW3RXX5c3afktBxkIWjfmy2leCuJM2InQMmCyz0IHoT03J+c2mqzG2zcUq03R2v pi2SBlBa17+cw== Date: Tue, 21 Jul 2026 11:28:21 -0500 From: Bjorn Helgaas To: Tim Harvey , Nathan Rossi , Nathan Rossi Cc: Bjorn Helgaas , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] PCI: Add ACS quirk for Pericom PI7C9X2G608 switches [12d8:2608] Message-ID: <20260721162821.GA596492@bhelgaas> Precedence: bulk X-Mailing-List: linux-pci@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: <20260720215718.2139510-1-tharvey@gateworks.com> [+to Nathan] On Mon, Jul 20, 2026 at 02:57:18PM -0700, Tim Harvey wrote: > The Pericom PI7C9X2G608 6-port Gen2 PCIe switch is also affected by > the PI7C9X2G errata per the errata document: > E2: ACS P2P Request Redirect Is Not Functional > > Apply the same quirk to this PCI ID as well to apply the workaround > required if using ACS. > > Fixes: acd61ffb2f16 ("PCI: Add ACS quirk for Pericom PI7C9X2G switches") > Cc: stable@vger.kernel.org > Signed-off-by: Tim Harvey Applied to pci/virtualization for v7.3, thanks! Note that Sashiko found what looks like a legit pre-existing issue with acd61ffb2f16 ("PCI: Add ACS quirk for Pericom PI7C9X2G switches"): https://lore.kernel.org/all/20260720223203.A30841F000E9@smtp.kernel.org > --- > drivers/pci/quirks.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c > index b09f27f7846f..27f7d56c9ac3 100644 > --- a/drivers/pci/quirks.c > +++ b/drivers/pci/quirks.c > @@ -6263,6 +6263,10 @@ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0xb404, > pci_fixup_pericom_acs_store_forward); > DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0xb404, > pci_fixup_pericom_acs_store_forward); > +DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2608, > + pci_fixup_pericom_acs_store_forward); > +DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2608, > + pci_fixup_pericom_acs_store_forward); > > static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) > { > -- > 2.34.1 >