github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-19 20:22:46 +00:00
Code Issues Projects Releases Wiki Activity

add hypercall hc_sos_offline_cpu support

Browse Source 
SOS boot with all physicall cpus, before running UOS, it should free
CPU resource by offline not used cpus
- first do standard cpu offline flow
- then call hcall_sos_offline_cpu hypercall to release cpu resource really

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jason Chen CJ 2018-05-30 22:22:37 +08:00 committed by lijinxia
parent 589c72382a
commit 2dca23c7c9
4 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
hypervisor/arch/x86/guest/vmcall.c
View File

@ -38,6 +38,9 @@ int vmcall_vmexit_handler(struct vcpu *vcpu)
/* Dispatch the hypercall handler */
switch (hypcall_id) {
case HC_SOS_OFFLINE_CPU:
ret = hcall_sos_offline_cpu(vm, param1);
break;
case HC_GET_API_VERSION:
#ifdef CONFIG_VM0_DESC
/* vm0 will call HC_GET_API_VERSION as first hypercall, fixup

24
hypervisor/common/hypercall.c
View File

@ -25,6 +25,30 @@ bool is_hypercall_from_ring0(void)
return false;
}
int32_t hcall_sos_offline_cpu(struct vm *vm, uint64_t lapicid)
{
struct vcpu *vcpu;
int i;
if (!is_vm0(vm))
return -1;
pr_info("sos offline cpu with lapicid %lld", lapicid);
foreach_vcpu(i, vm, vcpu) {
if (vlapic_get_apicid(vcpu->arch_vcpu.vlapic) == lapicid) {
/* should not offline BSP */
if (vcpu->vcpu_id == 0)
return -1;
pause_vcpu(vcpu, VCPU_ZOMBIE);
reset_vcpu(vcpu);
destroy_vcpu(vcpu);
}
}
return 0;
}
int32_t hcall_get_api_version(struct vm *vm, uint64_t param)
{
struct hc_api_version version;

12
hypervisor/include/common/hypercall.h
View File

@ -24,6 +24,18 @@ bool is_hypercall_from_ring0(void);
* @{
*/
/**
* @brief offline vcpu from SOS
*
* The function offline specific vcpu from SOS.
*
* @param vm Pointer to VM data structure
* @param lapicid lapic id of the vcpu which wants to offline
*
* @return 0 on success, non-zero on error.
*/
int32_t hcall_sos_offline_cpu(struct vm *vm, uint64_t lapicid);
/**
* @brief Get hypervisor api version
*

1
hypervisor/include/public/acrn_hv_defs.h
View File

@ -26,6 +26,7 @@
/* general */
#define HC_ID_GEN_BASE 0x0UL
#define HC_GET_API_VERSION _HC_ID(HC_ID, HC_ID_GEN_BASE + 0x00UL)
#define HC_SOS_OFFLINE_CPU _HC_ID(HC_ID, HC_ID_GEN_BASE + 0x01UL)
/* VM management */
#define HC_ID_VM_BASE 0x10UL