linux_dsm_epyc7002/drivers/pci
Alexander Duyck ea9a885416 PCI: Set SR-IOV NumVFs to zero after enumeration
The enumeration path should leave NumVFs set to zero.  But after
4449f07972 ("PCI: Calculate maximum number of buses required for VFs"),
we call virtfn_max_buses() in the enumeration path, which changes NumVFs.
This NumVFs change is visible via lspci and sysfs until a driver enables
SR-IOV.

Iterate from TotalVFs down to zero so NumVFs is zero when we're finished
computing the maximum number of buses.  Validate offset and stride in
the loop, so we can test it at every possible NumVFs setting.  Rename
virtfn_max_buses() to compute_max_vf_buses() to hint that it does have a
side effect of updating iov->max_VF_buses.

[bhelgaas: changelog, rename, allow numVF==1 && stride==0, rework loop,
reverse sense of error path]
Fixes: 4449f07972 ("PCI: Calculate maximum number of buses required for VFs")
Based-on-patch-by: Ethan Zhao <ethan.zhao@oracle.com>
Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2015-10-29 16:20:50 -05:00
..
host Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-01 14:33:35 -07:00
hotplug PCI: pciehp: Remove ignored MRL sensor interrupt events 2015-08-10 14:24:09 -05:00
pcie PCI: Fix pcie_port_device_resume() comment 2015-07-14 13:41:04 -05:00
access.c PCI: Add dev_flags bit to access VPD through function 0 2015-07-21 13:11:53 -05:00
ats.c PCI: Remove pci_ats_enabled() 2015-08-13 15:59:59 -05:00
bus.c PCI: Add pci_bus_addr_t 2015-05-29 17:21:45 -05:00
host-bridge.c Merge branch 'pci/misc' into next 2015-04-10 08:27:18 -05:00
hotplug-pci.c PCI: Remove unnecessary __ref annotations 2014-04-29 17:36:44 -06:00
htirq.c x86/htirq: Use hierarchical irqdomain to manage Hypertransport interrupts 2015-04-24 15:36:50 +02:00
iov.c PCI: Set SR-IOV NumVFs to zero after enumeration 2015-10-29 16:20:50 -05:00
irq.c PCI: Fix whitespace, capitalization, and spelling errors 2013-11-14 11:28:18 -07:00
Kconfig PCI,parisc: Enable 64-bit bus addresses on PA-RISC 2015-09-08 15:30:47 +02:00
Makefile PCI: Build setup-irq.o for arm64 2015-08-20 12:02:49 -05:00
msi.c Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2015-09-01 14:33:35 -07:00
of.c PCI/MSI: Allow msi_domain lookup using the host bridge node 2015-07-30 00:14:37 +02:00
pci-acpi.c PCI / ACPI: Fix pci_acpi_optimize_delay() comment 2015-07-15 15:11:50 -05:00
pci-driver.c kexec: split kexec_load syscall from kexec core code 2015-09-10 13:29:01 -07:00
pci-label.c PCI: Make a shareable UUID for PCI firmware ACPI _DSM 2015-04-08 14:39:30 -05:00
pci-stub.c PCI: Whitespace cleanup 2014-06-10 20:20:19 -06:00
pci-sysfs.c PCI: Don't read past the end of sysfs "driver_override" buffer 2015-02-24 17:35:37 -06:00
pci.c PCI: Don't try to restore VF BARs 2015-09-14 10:34:17 -05:00
pci.h PCI: Move PCI_FIND_CAP_TTL to pci.h and use it in quirks 2015-07-14 23:35:36 -05:00
probe.c libnvdimm for 4.3: 2015-09-08 14:35:59 -07:00
proc.c PCI: Whitespace cleanup 2014-06-10 20:20:19 -06:00
quirks.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2015-08-31 17:38:39 -07:00
remove.c PCI: Embed ATS info directly into struct pci_dev 2015-08-13 15:57:21 -05:00
rom.c PCI: Fix infinite loop with ROM image of size 0 2015-01-23 17:42:59 -06:00
search.c PCI: Delete unnecessary NULL pointer checks 2014-11-10 21:02:17 -07:00
setup-bus.c PCI: Preserve resource size during alignment reordering 2015-06-01 17:56:32 -05:00
setup-irq.c PCI: Export symbols required for loadable host driver modules 2015-04-08 14:17:10 -05:00
setup-res.c PCI: Don't try to restore VF BARs 2015-09-14 10:34:17 -05:00
slot.c PCI: Hold pci_slot_mutex while searching bus->slots list 2015-07-30 16:19:53 -05:00
syscall.c PCI: Whitespace cleanup 2014-06-10 20:20:19 -06:00
vc.c PCI: Use dev->has_secondary_link to find downstream PCIe links 2015-05-29 15:35:26 -05:00
vpd.c pci: Fix files needing export.h for EXPORT_SYMBOL/THIS_MODULE 2011-10-31 19:31:22 -04:00
xen-pcifront.c PCI: Use for_each_pci_msi_entry() to access MSI device list 2015-07-22 18:37:43 +02:00