From: sathyanarayanan.kuppuswamy@linux.intel.com To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, keith.busch@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v5 7/7] PCI: Skip Enhanced Allocation (EA) initialization for VF device Date: Thu, 1 Aug 2019 17:06:04 -0700 Message-ID: <0418e168c33b9373af104ffda623f266d45e6f9f.1564702313.git.sathyanarayanan.kuppuswamy@linux.intel.com> (raw) In-Reply-To: <cover.1564702313.git.sathyanarayanan.kuppuswamy@linux.intel.com> From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> As per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced Allocation Capability. So skip pci_ea_init() for virtual devices. Cc: Ashok Raj <ashok.raj@intel.com> Cc: Keith Busch <keith.busch@intel.com> Suggested-by: Ashok Raj <ashok.raj@intel.com> Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> --- drivers/pci/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 29ed5ec1ac27..4b2844c3606c 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -3020,6 +3020,13 @@ void pci_ea_init(struct pci_dev *dev) int offset; int i; + /* + * Per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced + * Allocation Capability. + */ + if (dev->is_virtfn) + return; + /* find PCI EA capability in list */ ea = pci_find_capability(dev, PCI_CAP_ID_EA); if (!ea) -- 2.21.0
prev parent reply index Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-08-02 0:05 [PATCH v5 0/7] Fix PF/VF dependency issue sathyanarayanan.kuppuswamy 2019-08-02 0:05 ` [PATCH v5 1/7] PCI/ATS: Fix pci_prg_resp_pasid_required() dependency issues sathyanarayanan.kuppuswamy 2019-08-12 20:04 ` Bjorn Helgaas 2019-08-12 20:20 ` sathyanarayanan kuppuswamy 2019-08-13 3:51 ` Bjorn Helgaas 2019-08-16 18:06 ` Kuppuswamy Sathyanarayanan 2019-08-02 0:05 ` [PATCH v5 2/7] PCI/ATS: Initialize PRI in pci_ats_init() sathyanarayanan.kuppuswamy 2019-08-12 20:04 ` Bjorn Helgaas 2019-08-12 21:35 ` sathyanarayanan kuppuswamy 2019-08-13 4:10 ` Bjorn Helgaas 2019-08-15 4:46 ` Bjorn Helgaas 2019-08-15 17:30 ` Kuppuswamy Sathyanarayanan 2019-08-16 17:31 ` Bjorn Helgaas 2019-08-02 0:06 ` [PATCH v5 3/7] PCI/ATS: Initialize PASID " sathyanarayanan.kuppuswamy 2019-08-12 20:04 ` Bjorn Helgaas 2019-08-15 4:48 ` Bjorn Helgaas 2019-08-15 4:56 ` Bjorn Helgaas 2019-08-15 17:31 ` Kuppuswamy Sathyanarayanan 2019-08-02 0:06 ` [PATCH v5 4/7] PCI/ATS: Add PRI support for PCIe VF devices sathyanarayanan.kuppuswamy 2019-08-12 20:04 ` Bjorn Helgaas 2019-08-12 21:40 ` sathyanarayanan kuppuswamy 2019-08-13 4:16 ` Bjorn Helgaas 2019-08-15 22:20 ` Bjorn Helgaas 2019-08-15 22:39 ` Kuppuswamy Sathyanarayanan 2019-08-19 14:15 ` Bjorn Helgaas 2019-08-19 22:53 ` Kuppuswamy Sathyanarayanan 2019-08-19 23:19 ` Bjorn Helgaas 2019-08-28 18:21 ` Kuppuswamy Sathyanarayanan 2019-08-28 18:57 ` Bjorn Helgaas 2019-08-02 0:06 ` [PATCH v5 5/7] PCI/ATS: Add PASID " sathyanarayanan.kuppuswamy 2019-08-12 20:05 ` Bjorn Helgaas 2019-08-13 22:19 ` Kuppuswamy Sathyanarayanan 2019-08-15 5:04 ` Bjorn Helgaas 2019-08-16 1:21 ` Kuppuswamy Sathyanarayanan 2019-08-02 0:06 ` [PATCH v5 6/7] PCI/ATS: Disable PF/VF ATS service independently sathyanarayanan.kuppuswamy 2019-08-02 0:06 ` sathyanarayanan.kuppuswamy [this message]
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