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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

10
hypervisor/arch/x86/guest/instr_emul_wrapper.c
View File

@@ -110,8 +110,8 @@ int vm_set_seg_desc(struct vcpu *vcpu, enum cpu_reg_name seg,
}
exec_vmwrite(base, ret_desc->base);
exec_vmwrite(limit, ret_desc->limit);
exec_vmwrite(access, ret_desc->access);
exec_vmwrite32(limit, ret_desc->limit);
exec_vmwrite32(access, ret_desc->access);
return 0;
}
@@ -136,8 +136,8 @@ int vm_get_seg_desc(struct vcpu *vcpu, enum cpu_reg_name seg,
}
desc->base = exec_vmread(base);
desc->limit = (uint32_t)exec_vmread(limit);
desc->access = (uint32_t)exec_vmread(access);
desc->limit = exec_vmread32(limit);
desc->access = exec_vmread32(access);
return 0;
}
@@ -351,7 +351,7 @@ int decode_instruction(struct vcpu *vcpu)
return retval;
}
csar = (uint32_t)exec_vmread(VMX_GUEST_CS_ATTR);
csar = exec_vmread32(VMX_GUEST_CS_ATTR);
get_guest_paging_info(vcpu, emul_ctxt, csar);
cpu_mode = get_vcpu_mode(vcpu);