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hv:add per-vm lock for vm & vcpu state change

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-- replace global hypercall lock with per-vm lock
-- add spinlock protection for vm & vcpu state change

v1-->v2:
   change get_vm_lock/put_vm_lock parameter from vm_id to vm
   move lock obtain before vm state check
   move all lock from vmcall.c to hypercall.c

Tracked-On: #4958
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com
Reviewed-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Mingqiang Chi
2020-07-13 18:22:57 +08:00
parent e5c5337886
commit aa89eb3541
8 changed files with 96 additions and 58 deletions
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15
hypervisor/include/arch/x86/guest/vm.h
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@@ -119,6 +119,10 @@ struct vm_arch {
} __aligned(PAGE_SIZE);
struct acrn_vm {
/* vm_state_lock MUST be the first field in VM structure it will not clear zero when creating VM
* this lock initialization depends on the clear BSS section
*/
spinlock_t vm_state_lock;/* Spin-lock used to protect vm/vcpu state transition for a VM */
struct vm_arch arch_vm; /* Reference to this VM's arch information */
struct vm_hw_info hw; /* Reference to this VM's HW information */
struct vm_sw_info sw; /* Reference to SW associated with this VM */
@@ -132,7 +136,6 @@ struct acrn_vm {
struct iommu_domain *iommu; /* iommu domain of this VM */
spinlock_t vlapic_mode_lock; /* Spin-lock used to protect vlapic_mode modifications for a VM */
spinlock_t ept_lock; /* Spin-lock used to protect ept add/modify/remove 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];
@@ -152,7 +155,6 @@ struct acrn_vm {
uint32_t vcpuid_entry_nr, vcpuid_level, vcpuid_xlevel;
struct vcpuid_entry vcpuid_entries[MAX_VM_VCPUID_ENTRIES];
struct acrn_vpci vpci;
uint8_t vrtc_offset;
uint64_t intr_inject_delay_delta; /* delay of intr injection */
@@ -246,6 +248,15 @@ struct acrn_vm *get_highest_severity_vm(bool runtime);
bool vm_hide_mtrr(const struct acrn_vm *vm);
void update_vm_vlapic_state(struct acrn_vm *vm);
enum vm_vlapic_mode check_vm_vlapic_mode(const struct acrn_vm *vm);
/*
* @pre vm != NULL
*/
void get_vm_lock(struct acrn_vm *vm);
/*
* @pre vm != NULL
*/
void put_vm_lock(struct acrn_vm *vm);
#endif /* !ASSEMBLER */
#endif /* VM_H_ */