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HV: hypercall: make hypercall functions return int32_t

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The error code in the hypervisor is 32-bit signed integers. To reduce implicit
conversions, this patch make hcall_xxx returns int32_t, and finally converts it
to uint64_t when assigned to rax whose semantics is properly defined in C99.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Junjie Mao
2018-07-19 23:17:38 +08:00
committed by lijinxia
parent ad73bb511c
commit 1a1ee93656
4 changed files with 69 additions and 66 deletions
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48
hypervisor/include/common/hypercall.h
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@@ -35,7 +35,7 @@ bool is_hypercall_from_ring0(void);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_get_api_version(struct vm *vm, uint64_t param);
int32_t hcall_get_api_version(struct vm *vm, uint64_t param);
/**
* @brief create virtual machine
@@ -50,7 +50,7 @@ int64_t hcall_get_api_version(struct vm *vm, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_create_vm(struct vm *vm, uint64_t param);
int32_t hcall_create_vm(struct vm *vm, uint64_t param);
/**
* @brief destroy virtual machine
@@ -62,7 +62,7 @@ int64_t hcall_create_vm(struct vm *vm, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_destroy_vm(uint64_t vmid);
int32_t hcall_destroy_vm(uint64_t vmid);
/**
* @brief resume virtual machine
@@ -75,7 +75,7 @@ int64_t hcall_destroy_vm(uint64_t vmid);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_resume_vm(uint64_t vmid);
int32_t hcall_resume_vm(uint64_t vmid);
/**
* @brief pause virtual machine
@@ -88,7 +88,7 @@ int64_t hcall_resume_vm(uint64_t vmid);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_pause_vm(uint64_t vmid);
int32_t hcall_pause_vm(uint64_t vmid);
/**
* @brief create vcpu
@@ -104,7 +104,7 @@ int64_t hcall_pause_vm(uint64_t vmid);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_create_vcpu(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_create_vcpu(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief assert IRQ line
@@ -119,7 +119,7 @@ int64_t hcall_create_vcpu(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_assert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_assert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief deassert IRQ line
@@ -134,7 +134,7 @@ int64_t hcall_assert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_deassert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_deassert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief trigger a pulse on IRQ line
@@ -149,7 +149,7 @@ int64_t hcall_deassert_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_pulse_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_pulse_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief inject MSI interrupt
@@ -163,7 +163,7 @@ int64_t hcall_pulse_irqline(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_inject_msi(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_inject_msi(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief set ioreq shared buffer
@@ -178,7 +178,7 @@ int64_t hcall_inject_msi(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_set_ioreq_buffer(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_set_ioreq_buffer(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief notify request done
@@ -191,7 +191,7 @@ int64_t hcall_set_ioreq_buffer(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_notify_req_finish(uint64_t vmid, uint64_t param);
int32_t hcall_notify_req_finish(uint64_t vmid, uint64_t param);
/**
* @brief setup ept memory mapping
@@ -206,7 +206,7 @@ int64_t hcall_notify_req_finish(uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_set_vm_memmap(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_set_vm_memmap(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief setup ept memory mapping for multi regions
@@ -217,7 +217,7 @@ int64_t hcall_set_vm_memmap(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_set_vm_memmaps(struct vm *vm, uint64_t param);
int32_t hcall_set_vm_memmaps(struct vm *vm, uint64_t param);
/**
* @brief remap PCI MSI interrupt
@@ -232,7 +232,7 @@ int64_t hcall_set_vm_memmaps(struct vm *vm, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_remap_pci_msix(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_remap_pci_msix(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief translate guest physical address to host physical address
@@ -246,7 +246,7 @@ int64_t hcall_remap_pci_msix(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_gpa_to_hpa(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_gpa_to_hpa(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief Assign one passthrough dev to VM.
@@ -258,7 +258,7 @@ int64_t hcall_gpa_to_hpa(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_assign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_assign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief Deassign one passthrough dev from VM.
@@ -270,7 +270,7 @@ int64_t hcall_assign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_deassign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_deassign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief Set interrupt mapping info of ptdev.
@@ -282,7 +282,7 @@ int64_t hcall_deassign_ptdev(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_set_ptdev_intr_info(struct vm *vm, uint64_t vmid, uint64_t param);
int32_t hcall_set_ptdev_intr_info(struct vm *vm, uint64_t vmid, uint64_t param);
/**
* @brief Clear interrupt mapping info of ptdev.
@@ -294,7 +294,7 @@ int64_t hcall_set_ptdev_intr_info(struct vm *vm, uint64_t vmid, uint64_t param);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_reset_ptdev_intr_info(struct vm *vm, uint64_t vmid,
int32_t hcall_reset_ptdev_intr_info(struct vm *vm, uint64_t vmid,
uint64_t param);
/**
@@ -306,7 +306,7 @@ int64_t hcall_reset_ptdev_intr_info(struct vm *vm, uint64_t vmid,
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_setup_sbuf(struct vm *vm, uint64_t param);
int32_t hcall_setup_sbuf(struct vm *vm, uint64_t param);
/**
* @brief Get VCPU Power state.
@@ -318,7 +318,7 @@ int64_t hcall_setup_sbuf(struct vm *vm, uint64_t param);
* @return 0 on success, non-zero on error.
*/
int64_t hcall_get_cpu_pm_state(struct vm *vm, uint64_t cmd, uint64_t param);
int32_t hcall_get_cpu_pm_state(struct vm *vm, uint64_t cmd, uint64_t param);
/**
* @defgroup trusty_hypercall Trusty Hypercalls
@@ -344,7 +344,7 @@ int64_t hcall_get_cpu_pm_state(struct vm *vm, uint64_t cmd, uint64_t param);
* @return 0 on success, non-zero on error.
*/
int64_t hcall_world_switch(struct vcpu *vcpu);
int32_t hcall_world_switch(struct vcpu *vcpu);
/**
* @brief Initialize environment for Trusty-OS on a vCPU.
@@ -360,7 +360,7 @@ int64_t hcall_world_switch(struct vcpu *vcpu);
*
* @return 0 on success, non-zero on error.
*/
int64_t hcall_initialize_trusty(struct vcpu *vcpu, uint64_t param);
int32_t hcall_initialize_trusty(struct vcpu *vcpu, uint64_t param);
/**
* @}