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Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull x86 platform updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Add "Jailhouse" hypervisor support (Jan Kiszka)

   - Update DeviceTree support (Ivan Gorinov)

   - Improve DMI date handling (Andy Shevchenko)"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/PCI: Fix a potential regression when using dmi_get_bios_year()
  firmware/dmi_scan: Uninline dmi_get_bios_year() helper
  x86/devicetree: Use CPU description from Device Tree
  of/Documentation: Specify local APIC ID in "reg"
  MAINTAINERS: Add entry for Jailhouse
  x86/jailhouse: Allow to use PCI_MMCONFIG without ACPI
  x86: Consolidate PCI_MMCONFIG configs
  x86: Align x86_64 PCI_MMCONFIG with 32-bit variant
  x86/jailhouse: Enable PCI mmconfig access in inmates
  PCI: Scan all functions when running over Jailhouse
  jailhouse: Provide detection for non-x86 systems
  x86/devicetree: Fix device IRQ settings in DT
  x86/devicetree: Initialize device tree before using it
  pci: Simplify code by using the new dmi_get_bios_year() helper
  ACPI/sleep: Simplify code by using the new dmi_get_bios_year() helper
  x86/pci: Simplify code by using the new dmi_get_bios_year() helper
  dmi: Introduce the dmi_get_bios_year() helper function
  x86/platform/quark: Re-use DEFINE_SHOW_ATTRIBUTE() macro
  x86/platform/atom: Re-use DEFINE_SHOW_ATTRIBUTE() macro
This commit is contained in:
Linus Torvalds 2018-04-02 16:15:32 -07:00
commit cea061e455
22 changed files with 185 additions and 103 deletions
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6
drivers/pci/pci.c
View file

@ -2258,8 +2258,6 @@ void pci_config_pm_runtime_put(struct pci_dev *pdev)
*/
bool pci_bridge_d3_possible(struct pci_dev *bridge)
{
unsigned int year;
if (!pci_is_pcie(bridge))
return false;
@ -2287,10 +2285,8 @@ bool pci_bridge_d3_possible(struct pci_dev *bridge)
* It should be safe to put PCIe ports from 2015 or newer
* to D3.
*/
if (dmi_get_date(DMI_BIOS_DATE, &year, NULL, NULL) &&
year >= 2015) {
if (dmi_get_bios_year() >= 2015)
return true;
}
break;
}

22
drivers/pci/probe.c
View file

@ -16,6 +16,7 @@
#include <linux/pci-aspm.h>
#include <linux/aer.h>
#include <linux/acpi.h>
#include <linux/hypervisor.h>
#include <linux/irqdomain.h>
#include <linux/pm_runtime.h>
#include "pci.h"
@ -2518,14 +2519,29 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus,
{
unsigned int used_buses, normal_bridges = 0, hotplug_bridges = 0;
unsigned int start = bus->busn_res.start;
unsigned int devfn, cmax, max = start;
unsigned int devfn, fn, cmax, max = start;
struct pci_dev *dev;
int nr_devs;
dev_dbg(&bus->dev, "scanning bus\n");
/* Go find them, Rover! */
for (devfn = 0; devfn < 0x100; devfn += 8)
pci_scan_slot(bus, devfn);
for (devfn = 0; devfn < 256; devfn += 8) {
nr_devs = pci_scan_slot(bus, devfn);
/*
* The Jailhouse hypervisor may pass individual functions of a
* multi-function device to a guest without passing function 0.
* Look for them as well.
*/
if (jailhouse_paravirt() && nr_devs == 0) {
for (fn = 1; fn < 8; fn++) {
dev = pci_scan_single_device(bus, devfn + fn);
if (dev)
dev->multifunction = 1;
}
}
}
/* Reserve buses for SR-IOV capability */
used_buses = pci_iov_bus_range(bus);