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hv: vpci: add a global PCI lock for each VM

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Concurrent access on PCI device may happened if UOS try to access PCI configuration
space on different vCPUs through IO port. This patch just adds a global PCI lock for
each VM to prevent the concurrent access.

Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2019-10-31 00:41:48 +08:00
committed by wenlingz
parent f711d3a639
commit 21cb120bcc
4 changed files with 60 additions and 43 deletions
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2
hypervisor/dm/vpci/vpci_priv.h
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@@ -143,6 +143,6 @@ void deinit_vmsix(const struct pci_vdev *vdev);
uint32_t pci_vdev_read_cfg(const struct pci_vdev *vdev, uint32_t offset, uint32_t bytes);
void pci_vdev_write_cfg(struct pci_vdev *vdev, uint32_t offset, uint32_t bytes, uint32_t val);
struct pci_vdev *pci_find_vdev(const struct acrn_vpci *vpci, union pci_bdf vbdf);
struct pci_vdev *pci_find_vdev(struct acrn_vpci *vpci, union pci_bdf vbdf);
#endif /* VPCI_PRIV_H_ */