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hv: mmio: add a lock to protect mmio_node access

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After adding PCI BAR remap support, mmio_node may unregister when there's others
access it. This patch add a lock to protect mmio_node access.

Tracked-On: #3475
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2019-10-31 08:11:25 +08:00
committed by wenlingz
parent 21cb120bcc
commit 9d26dab6d6
3 changed files with 11 additions and 2 deletions
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3
hypervisor/include/arch/x86/guest/vm.h
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@@ -123,8 +123,9 @@ struct acrn_vm {
struct acrn_vuart vuart[MAX_VUART_NUM_PER_VM]; /* Virtual UART */
enum vpic_wire_mode wire_mode;
struct iommu_domain *iommu; /* iommu domain of this VM */
spinlock_t vm_lock; /* Spin-lock used to protect VM modifications */
spinlock_t vm_lock; /* Spin-lock used to protect vlapic_state modifications for a VM */
spinlock_t emul_mmio_lock; /* Used to protect emulation mmio_node concurrent access for a VM */
uint16_t max_emul_mmio_regions; /* max index of the emulated mmio_region */
struct mem_io_node emul_mmio[CONFIG_MAX_EMULATED_MMIO_REGIONS];