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HV: treewide: enforce unsignedness of pcpu_id

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In the hypervisor, physical cpu id is defined as "int" or "uint32_t"
type in the hypervisor. So there are some sign conversion issues
about  physical cpu id (pcpu_id) reported by static analysis tool.
Sign conversion violates the rules of MISRA C:2012.

In this patch, define physical cpu id as "uint16_t" type for all
modules in the hypervisor and change related codes. The valid
range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the
invalid pcpu_id for error detection, BROADCAST_PCPU_ID is
broadcast pcpu_id used to notify all valid pcpu.

The type of pcpu_id in the struct vcpu and vcpu_id is "int" type,
this will be fixed in another patch.

V1-->V2:
    *  Change the type of pcpu_id from uint32_t to uint16_t;
    *  Define INVALID_PCPU_ID for error detection;
    *  Define BROADCAST_PCPU_ID to notify all valid pcpu.

V2-->V3:
    *  Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID;
    *  Update addtional pcpu_id;
    *  Convert hexadecimals to unsigned to meet the type of pcpu_id;
    *  Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be
       defined by configuration.
Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8,
this is constraint by implement in the init_lapic().
Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Xiangyang Wu
2018-06-20 15:42:52 +08:00
committed by lijinxia
parent 2922a657c9
commit 3027bfab10
37 changed files with 110 additions and 94 deletions
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8
hypervisor/arch/x86/guest/vcpu.c
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@@ -14,7 +14,7 @@ extern struct efi_ctx* efi_ctx;
vm_sw_loader_t vm_sw_loader;
struct vcpu *get_ever_run_vcpu(int pcpu_id)
struct vcpu *get_ever_run_vcpu(uint16_t pcpu_id)
{
return per_cpu(ever_run_vcpu, pcpu_id);
}
@@ -31,7 +31,7 @@ struct vcpu *get_ever_run_vcpu(int pcpu_id)
* for physical CPU 1 : vcpu->pcpu_id = 1, vcpu->vcpu_id = 1, vmid = 1;
*
***********************************************************************/
int create_vcpu(int cpu_id, struct vm *vm, struct vcpu **rtn_vcpu_handle)
int create_vcpu(uint16_t cpu_id, struct vm *vm, struct vcpu **rtn_vcpu_handle)
{
struct vcpu *vcpu;
@@ -284,7 +284,7 @@ void reset_vcpu(struct vcpu *vcpu)
void pause_vcpu(struct vcpu *vcpu, enum vcpu_state new_state)
{
int pcpu_id = get_cpu_id();
uint16_t pcpu_id = get_cpu_id();
pr_dbg("vcpu%d paused, new state: %d",
vcpu->vcpu_id, new_state);
@@ -334,7 +334,7 @@ void schedule_vcpu(struct vcpu *vcpu)
}
/* help function for vcpu create */
int prepare_vcpu(struct vm *vm, int pcpu_id)
int prepare_vcpu(struct vm *vm, uint16_t pcpu_id)
{
int ret = 0;
struct vcpu *vcpu = NULL;