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hv: Add is_xapic_enabled API to check vLAPIC moe

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is_xapic_enabled API returns true if vLAPIC is in xAPIC mode. In
all other cases, it returns false.

Tracked-On: #3253
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Sainath Grandhi 2019-06-10 16:51:44 -07:00 committed by wenlingz
parent 7cb71a317e
commit a3fdc7a496
2 changed files with 11 additions and 0 deletions
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10
hypervisor/arch/x86/guest/vlapic.c
View File

@ -1998,6 +1998,16 @@ bool is_x2apic_enabled(const struct acrn_vlapic *vlapic)
return ret;
}
bool is_xapic_enabled(const struct acrn_vlapic *vlapic)
{
bool ret = false;
if ((vlapic_get_apicbase(vlapic) & APICBASE_LAPIC_MODE) == APICBASE_XAPIC) {
ret = true;
}
return ret;
}
static inline uint32_t x2apic_msr_to_regoff(uint32_t msr)
{

1
hypervisor/include/arch/x86/guest/vlapic.h
View File

@ -212,6 +212,7 @@ void vlapic_calc_dest_lapic_pt(struct acrn_vm *vm, uint64_t *dmask, bool is_broa
uint32_t dest, bool phys);
bool is_lapic_pt_enabled(struct acrn_vm *vm);
bool is_x2apic_enabled(const struct acrn_vlapic *vlapic);
bool is_xapic_enabled(const struct acrn_vlapic *vlapic);
/**
* @}
*/