github/acrn-hypervisor
1
0
Fork 0
mirror of https://github.com/projectacrn/acrn-hypervisor.git synced 2025-06-20 20:53:46 +00:00
Code Issues Projects Releases Wiki Activity

refine apicv capability check

Browse Source 
deinfe rule like below:
- must support TPR shadow and apicv access
- based on above, check apicv register support
- based on above, check virtual interrupt delivery and post
  interrupt support

Changes to be committed:
	modified:   arch/x86/cpu_caps.c

Tracked-On: #1842
Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
This commit is contained in:
Jason Chen CJ 2018-12-17 16:51:25 +08:00 committed by wenlingz
parent 7c8b767192
commit e22217fd8f
1 changed files with 17 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
hypervisor/arch/x86/cpu_caps.c
View File

@ -218,27 +218,32 @@ static void detect_ept_cap(void)
static void detect_apicv_cap(void)
{
uint8_t features;
uint8_t features = 0U;
uint64_t msr_val;
msr_val = msr_read(MSR_IA32_VMX_PROCBASED_CTLS);
if (!is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS_TPR_SHADOW)) {
if (is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS_TPR_SHADOW)) {
features |= VAPIC_FEATURE_TPR_SHADOW;
} else {
/* must support TPR shadow */
return;
}
msr_val = msr_read(MSR_IA32_VMX_PROCBASED_CTLS2);
if (!is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS2_VAPIC)) {
if (is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS2_VAPIC)) {
features |= VAPIC_FEATURE_VIRT_ACCESS;
if (is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS2_VAPIC_REGS)) {
features |= VAPIC_FEATURE_VIRT_REG;
} else {
/* platform may only support APICV access */
cpu_caps.apicv_features = features;
return;
}
} else {
/* must support APICV access */
return;
}
if (!is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS2_VAPIC_REGS)) {
return;
}
features = (VAPIC_FEATURE_TPR_SHADOW
| VAPIC_FEATURE_VIRT_ACCESS
| VAPIC_FEATURE_VIRT_REG);
if (is_ctrl_setting_allowed(msr_val, VMX_PROCBASED_CTLS2_VX2APIC)) {
features |= VAPIC_FEATURE_VX2APIC_MODE;
}
@ -485,6 +490,7 @@ int32_t detect_hardware_support(void)
if (!is_apicv_supported()) {
pr_fatal("%s, APICV not supported\n", __func__);
return -ENODEV;
}
if (boot_cpu_data.cpuid_level < 0x15U) {