Commit dda56549 authored by Yinghai's avatar Yinghai Committed by David Woodhouse
Browse files

intel-iommu: use physfn to search drhd for VF 



When virtfn is used, we should use physfn to find correct drhd

-v2: add pci_physfn() Suggested by Roland Dreier <rdreier@cisco.com>
     do can remove ifdef in dmar.c
-v3: Chris pointed out we need that for dma_find_matched_atsr_unit too
     also change dmar_pci_device_match() static

Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
Acked-by: default avatarRoland Dreier <rdreier@cisco.com>
Acked-by: default avatarChris Wright <chrisw@sous-sol.org>
Acked-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarDavid Woodhouse <David.Woodhouse@intel.com>
parent 680a7524

drivers/pci/dmar.c

+5 −1
Original line number Diff line number Diff line
@@ -309,6 +309,8 @@ int dmar_find_matched_atsr_unit(struct pci_dev *dev) 
	struct acpi_dmar_atsr *atsr;

	struct dmar_atsr_unit *atsru;



	dev = pci_physfn(dev);



	list_for_each_entry(atsru, &dmar_atsr_units, list) {

		atsr = container_of(atsru->hdr, struct acpi_dmar_atsr, header);

		if (atsr->segment == pci_domain_nr(dev->bus))
@@ -507,7 +509,7 @@ parse_dmar_table(void) 
	return ret;

}



int dmar_pci_device_match(struct pci_dev *devices[], int cnt,

static int dmar_pci_device_match(struct pci_dev *devices[], int cnt,

			  struct pci_dev *dev)

{

	int index;
@@ -530,6 +532,8 @@ dmar_find_matched_drhd_unit(struct pci_dev *dev) 
	struct dmar_drhd_unit *dmaru = NULL;

	struct acpi_dmar_hardware_unit *drhd;



	dev = pci_physfn(dev);



	list_for_each_entry(dmaru, &dmar_drhd_units, list) {

		drhd = container_of(dmaru->hdr,

				    struct acpi_dmar_hardware_unit,

include/linux/pci.h

+10 −0
Original line number Diff line number Diff line
@@ -334,6 +334,16 @@ struct pci_dev { 
#endif

};



static inline struct pci_dev *pci_physfn(struct pci_dev *dev)

{

#ifdef CONFIG_PCI_IOV

	if (dev->is_virtfn)

		dev = dev->physfn;

#endif



	return dev;

}



extern struct pci_dev *alloc_pci_dev(void);



#define pci_dev_b(n) list_entry(n, struct pci_dev, bus_list)

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