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hv: mmu: add some API for guest page mode check

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add is_long_mode to check whether the processor is operating in IA-32e mode
add is_paging_enabled to check whether paging is enabled
add is_pae to check whether physical address extension is enabled.

Tracked-On: #1379
Signed-off-by: Li, Fei1 <fei1.li@intel.com>
This commit is contained in:
Li, Fei1
2018-09-29 14:08:51 +08:00
committed by wenlingz
parent 9fd8781242
commit 2b24b3780f
4 changed files with 20 additions and 5 deletions
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2
hypervisor/arch/x86/guest/vcpu.c
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@@ -321,7 +321,7 @@ int create_vcpu(uint16_t pcpu_id, struct vm *vm, struct vcpu **rtn_vcpu_handle)
static void set_vcpu_mode(struct vcpu *vcpu, uint32_t cs_attr)
{
if (vcpu_get_efer(vcpu) & MSR_IA32_EFER_LMA_BIT) {
if (is_long_mode(vcpu)) {
if (cs_attr & 0x2000) /* CS.L = 1 */
vcpu->arch_vcpu.cpu_mode = CPU_MODE_64BIT;
else