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HV:treewide:Add exec_vmread32 and exec_vmwrite32 functions

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In the hypervisor, VMCS fields include 16-bit fields,
32-bit fields, 64-bit fields and natural-width fields.
In the current implement, no exec_vmread32/exec_vmwrite32
is for accessing 32-bit fields. So there are many type
casting for the return value and parameters vmread/vmwrite
operations.

Create exec_vmread32 and exec_vmwrite32 functions to
access 32-bit fields in VMCS;
Update related variables type for vmread/vmwrite operations;
Update related caller according to VMCS fields size.

V1--V2:
        This is new part of this patch serial to only
        update 32 bit vmread/vmread opertions and related
        caller.
V2-->V3:
	Update related variables type in data structure
	 for exec_vmread32/exec_vmwrite32.
	Rename temp variable 'low' into 'value' for
	exec_vmread32;
V3-->V4:
	Remove useless type conversion.

Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
This commit is contained in:
Xiangyang Wu
2018-07-16 15:43:25 +08:00
committed by lijinxia
parent 65437960a9
commit 612cdceaca
9 changed files with 113 additions and 97 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
hypervisor/arch/x86/vmexit.c
View File

@@ -141,7 +141,7 @@ int vmexit_handler(struct vcpu *vcpu)
/* Obtain interrupt info */
vcpu->arch_vcpu.idt_vectoring_info =
exec_vmread(VMX_IDT_VEC_INFO_FIELD);
exec_vmread32(VMX_IDT_VEC_INFO_FIELD);
/* Filter out HW exception & NMI */
if ((vcpu->arch_vcpu.idt_vectoring_info & VMX_INT_INFO_VALID) != 0U) {
uint32_t vector_info = vcpu->arch_vcpu.idt_vectoring_info;
@@ -151,7 +151,7 @@ int vmexit_handler(struct vcpu *vcpu)
if (type == VMX_INT_TYPE_HW_EXP) {
if ((vector_info & VMX_INT_INFO_ERR_CODE_VALID) != 0U)
err_code = exec_vmread(VMX_IDT_VEC_ERROR_CODE);
err_code = exec_vmread32(VMX_IDT_VEC_ERROR_CODE);
vcpu_queue_exception(vcpu, vector, err_code);
vcpu->arch_vcpu.idt_vectoring_info = 0U;
} else if (type == VMX_INT_TYPE_NMI) {