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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
Download Patch File Download Diff File Expand all files Collapse all files

6
hypervisor/include/dm/vpci.h
View File

@@ -30,6 +30,7 @@
#ifndef VPCI_H_
#define VPCI_H_
#include <spinlock.h>
#include <pci.h>
@@ -112,6 +113,7 @@ union pci_cfg_addr_reg {
};
struct acrn_vpci {
spinlock_t lock;
struct acrn_vm *vm;
union pci_cfg_addr_reg addr;
uint32_t pci_vdev_cnt;
@@ -120,8 +122,8 @@ struct acrn_vpci {
extern const struct pci_vdev_ops vhostbridge_ops;
void vpci_init(struct acrn_vm *vm);
void vpci_cleanup(const struct acrn_vm *vm);
void vpci_cleanup(struct acrn_vm *vm);
void vpci_set_ptdev_intr_info(struct acrn_vm *target_vm, uint16_t vbdf, uint16_t pbdf);
void vpci_reset_ptdev_intr_info(const struct acrn_vm *target_vm, uint16_t vbdf, uint16_t pbdf);
void vpci_reset_ptdev_intr_info(struct acrn_vm *target_vm, uint16_t vbdf, uint16_t pbdf);
#endif /* VPCI_H_ */