redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

change P2P domain flags

Browse source 
Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Weidong Han 2008-12-08 09:17:15 +08:00 committed by Joerg Roedel
parent d71a2f33ac
commit 3b5410e735
1 changed files with 5 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
drivers/pci/intel-iommu.c
View file

@ -200,6 +200,9 @@ static inline bool dma_pte_present(struct dma_pte *pte)
return (pte->val & 3) != 0; return (pte->val & 3) != 0;
} }
/* devices under the same p2p bridge are owned in one domain */
#define DOMAIN_FLAG_P2P_MULTIPLE_DEVICES (1 < 0)
struct dmar_domain { struct dmar_domain {
int id; /* domain id */ int id; /* domain id */
struct intel_iommu *iommu; /* back pointer to owning iommu */ struct intel_iommu *iommu; /* back pointer to owning iommu */
@ -214,8 +217,7 @@ struct dmar_domain {
/* adjusted guest address width, 0 is level 2 30-bit */ /* adjusted guest address width, 0 is level 2 30-bit */
int agaw; int agaw;
#define DOMAIN_FLAG_MULTIPLE_DEVICES 1 int flags; /* flags to find out type of domain */
int flags;
}; };
/* PCI domain-device relationship */ /* PCI domain-device relationship */
@ -1574,7 +1576,7 @@ static struct dmar_domain *get_domain_for_dev(struct pci_dev *pdev, int gaw)
info->dev = NULL; info->dev = NULL;
info->domain = domain; info->domain = domain;
/* This domain is shared by devices under p2p bridge */ /* This domain is shared by devices under p2p bridge */
domain->flags |= DOMAIN_FLAG_MULTIPLE_DEVICES; domain->flags |= DOMAIN_FLAG_P2P_MULTIPLE_DEVICES;
/* pcie-to-pci bridge already has a domain, uses it */ /* pcie-to-pci bridge already has a domain, uses it */
found = NULL; found = NULL;