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hv: Replace dynamic allocation with static memory for vmxon_region

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Remove vmxon_region_pa from structure per_cpu_region,
and define vmxon_region inside per_cpu_region.

Tracked-On: #861
Signed-off-by: Mingqiang Chi <mingqiang.chi@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Mingqiang Chi
2018-09-05 13:51:32 +08:00
committed by lijinxia
parent 4360235edf
commit 65930809ee
2 changed files with 19 additions and 32 deletions
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48
hypervisor/arch/x86/vmx.c
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@@ -84,42 +84,28 @@ int exec_vmxon_instr(uint16_t pcpu_id)
{
uint64_t tmp64, vmcs_pa;
uint32_t tmp32;
int ret = -ENOMEM;
void *vmxon_region_va;
int ret = 0;
void *vmxon_region_va = (void *)per_cpu(vmxon_region, pcpu_id);
uint64_t vmxon_region_pa;
struct vcpu *vcpu = get_ever_run_vcpu(pcpu_id);
/* Allocate page aligned memory for VMXON region */
if (per_cpu(vmxon_region_pa, pcpu_id) == 0UL) {
vmxon_region_va = alloc_page();
}
else {
vmxon_region_va = HPA2HVA(per_cpu(vmxon_region_pa, pcpu_id));
}
/* Initialize vmxon page with revision id from IA32 VMX BASIC MSR */
tmp32 = (uint32_t)msr_read(MSR_IA32_VMX_BASIC);
(void)memcpy_s((uint32_t *) vmxon_region_va, 4U, (void *)&tmp32, 4U);
if (vmxon_region_va != NULL) {
/* Initialize vmxon page with revision id from IA32 VMX BASIC
* MSR
*/
tmp32 = (uint32_t)msr_read(MSR_IA32_VMX_BASIC);
(void)memcpy_s((uint32_t *) vmxon_region_va, 4U, (void *)&tmp32, 4U);
/* Turn on CR0.NE and CR4.VMXE */
CPU_CR_READ(cr0, &tmp64);
CPU_CR_WRITE(cr0, tmp64 | CR0_NE);
CPU_CR_READ(cr4, &tmp64);
CPU_CR_WRITE(cr4, tmp64 | CR4_VMXE);
/* Turn on CR0.NE and CR4.VMXE */
CPU_CR_READ(cr0, &tmp64);
CPU_CR_WRITE(cr0, tmp64 | CR0_NE);
CPU_CR_READ(cr4, &tmp64);
CPU_CR_WRITE(cr4, tmp64 | CR4_VMXE);
/* Turn ON VMX */
vmxon_region_pa = HVA2HPA(vmxon_region_va);
ret = exec_vmxon(&vmxon_region_pa);
/* Turn ON VMX */
per_cpu(vmxon_region_pa, pcpu_id) = HVA2HPA(vmxon_region_va);
ret = exec_vmxon(&per_cpu(vmxon_region_pa, pcpu_id));
if (vcpu != NULL) {
vmcs_pa = HVA2HPA(vcpu->arch_vcpu.vmcs);
ret = exec_vmptrld(&vmcs_pa);
}
} else {
pr_err("%s, alloc memory for VMXON region failed\n",
__func__);
if (vcpu != NULL) {
vmcs_pa = HVA2HPA(vcpu->arch_vcpu.vmcs);
ret = exec_vmptrld(&vmcs_pa);
}
return ret;