diff options
| -rw-r--r-- | arch/x86/pci/mmconfig-shared.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/x86/pci/mmconfig-shared.c b/arch/x86/pci/mmconfig-shared.c index 4b3efaa82ab7..e9497ee0f854 100644 --- a/arch/x86/pci/mmconfig-shared.c +++ b/arch/x86/pci/mmconfig-shared.c @@ -525,6 +525,8 @@ static bool __ref is_mmconf_reserved(check_reserved_t is_reserved, static bool __ref pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int early) { + struct resource *conflict; + if (!early && !acpi_disabled) { if (is_mmconf_reserved(is_acpi_reserved, cfg, dev, "ACPI motherboard resource")) @@ -542,8 +544,17 @@ pci_mmcfg_check_reserved(struct device *dev, struct pci_mmcfg_region *cfg, int e &cfg->res); if (is_mmconf_reserved(is_efi_mmio, cfg, dev, - "EfiMemoryMappedIO")) + "EfiMemoryMappedIO")) { + conflict = insert_resource_conflict(&iomem_resource, + &cfg->res); + if (conflict) + pr_warn("MMCONFIG %pR conflicts with %s %pR\n", + &cfg->res, conflict->name, conflict); + else + pr_info("MMCONFIG %pR reserved to work around lack of ACPI motherboard _CRS\n", + &cfg->res); return true; + } } /* |