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Merge branch 'pci/resource'

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- Evaluate ACPI "PCI Boot Configuration"_DSM (Benjamin Herrenschmidt)

  - Don't auto-realloc if we're preserving firmware config (Benjamin
    Herrenschmidt)

  - Allow arm64 to reallocate resources if necessary (Benjamin
    Herrenschmidt)

  - Preserve firmware config on arm64 when desired (Benjamin Herrenschmidt)

  - Simplify resource distribution to hotplug bridges (Nicholas Johnson)

* pci/resource:
  PCI: Skip resource distribution when no hotplug bridges
  PCI: Simplify pci_bus_distribute_available_resources()
  arm64: PCI: Preserve firmware configuration when desired
  arm64: PCI: Allow resource reallocation if necessary
  PCI: Don't auto-realloc if we're preserving firmware config
  PCI/ACPI: Evaluate PCI Boot Configuration _DSM
This commit is contained in:
Bjorn Helgaas 2019-07-12 17:08:28 -05:00
commit 8c6af6f042
5 changed files with 62 additions and 32 deletions
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2
include/linux/pci.h
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@ -508,6 +508,8 @@ struct pci_host_bridge {
unsigned int native_shpc_hotplug:1; /* OS may use SHPC hotplug */
unsigned int native_pme:1; /* OS may use PCIe PME */
unsigned int native_ltr:1; /* OS may use PCIe LTR */
unsigned int preserve_config:1; /* Preserve FW resource setup */
/* Resource alignment requirements */
resource_size_t (*align_resource)(struct pci_dev *dev,
const struct resource *res,