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instr_emul: remove vm_gva2gpa

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- vm_gva2gpa is same as gva2gpa, so replace it with gva2gpa directly.
- remove dead usage of vm_gva2gpa in emulate_movs.

Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Jason Chen CJ 2018-05-24 12:55:08 +08:00 committed by lijinxia
parent 51528d4a81
commit 8d35d8752b
3 changed files with 11 additions and 28 deletions
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26
hypervisor/arch/x86/guest/instr_emul.c
View File

@ -243,7 +243,6 @@ static uint64_t size2mask[] = {
[8] = 0xffffffffffffffff, [8] = 0xffffffffffffffff,
}; };
static int static int
vie_read_register(struct vcpu *vcpu, enum vm_reg_name reg, uint64_t *rval) vie_read_register(struct vcpu *vcpu, enum vm_reg_name reg, uint64_t *rval)
{ {
@ -671,10 +670,9 @@ emulate_movs(struct vcpu *vcpu, __unused uint64_t gpa, struct vie *vie,
__unused mem_region_write_t memwrite, __unused mem_region_write_t memwrite,
__unused void *arg) __unused void *arg)
{ {
uint64_t dstaddr, srcaddr, dstgpa, srcgpa; uint64_t dstaddr, srcaddr;
uint64_t rcx, rdi, rsi, rflags; uint64_t rcx, rdi, rsi, rflags;
int error, fault, opsize, seg, repeat; int error, fault, opsize, seg, repeat;
uint32_t err_code;
opsize = (vie->op.op_byte == 0xA4) ? 1 : vie->opsize; opsize = (vie->op.op_byte == 0xA4) ? 1 : vie->opsize;
error = 0; error = 0;
@ -714,14 +712,6 @@ emulate_movs(struct vcpu *vcpu, __unused uint64_t gpa, struct vie *vie,
if (error || fault) if (error || fault)
goto done; goto done;
err_code = 0;
error = vm_gva2gpa(vcpu, srcaddr, &srcgpa, &err_code);
if (error)
goto done;
err_code = PAGE_FAULT_WR_FLAG;
error = vm_gva2gpa(vcpu, dstaddr, &dstgpa, &err_code);
if (error)
goto done;
memcpy_s((char *)dstaddr, 16, (char *)srcaddr, opsize); memcpy_s((char *)dstaddr, 16, (char *)srcaddr, opsize);
error = vie_read_register(vcpu, VM_REG_GUEST_RSI, &rsi); error = vie_read_register(vcpu, VM_REG_GUEST_RSI, &rsi);
@ -1310,13 +1300,19 @@ emulate_stack_op(struct vcpu *vcpu, uint64_t mmio_gpa, struct vie *vie,
return 0; return 0;
} }
/* TODO: currently emulate_instruction is only for mmio, so here
* stack_gpa actually is unused for mmio_write & mmio_read, need
* take care of data trans if stack_gpa be used for memwrite in
* the future.
*/
if (pushop) if (pushop)
err_code |= PAGE_FAULT_WR_FLAG; err_code |= PAGE_FAULT_WR_FLAG;
error = vm_gva2gpa(vcpu, stack_gla, &stack_gpa, &err_code); error = gva2gpa(vcpu, stack_gla, &stack_gpa, &err_code);
if (error) { if (error == -EFAULT) {
pr_err("%s: failed to translate gva2gpa", __func__); vcpu_inject_pf(vcpu, stack_gla, err_code);
return error;
} else if (error < 0)
return error; return error;
}
if (pushop) { if (pushop) {
error = memread(vcpu, mmio_gpa, &val, size, arg); error = memread(vcpu, mmio_gpa, &val, size, arg);
if (error == 0) if (error == 0)

11
hypervisor/arch/x86/guest/instr_emul_wrapper.c
View File

@ -287,17 +287,6 @@ static int mmio_write(struct vcpu *vcpu, __unused uint64_t gpa, uint64_t wval,
return 0; return 0;
} }
int vm_gva2gpa(struct vcpu *vcpu, uint64_t gva, uint64_t *gpa,
uint32_t *err_code)
{
ASSERT(gpa != NULL, "Error in input arguments");
ASSERT(vcpu != NULL,
"Invalid vcpu id when gva2gpa");
return gva2gpa(vcpu, gva, gpa, err_code);
}
int decode_instruction(struct vcpu *vcpu) int decode_instruction(struct vcpu *vcpu)
{ {
struct emul_cnx *emul_cnx; struct emul_cnx *emul_cnx;

2
hypervisor/include/arch/x86/guest/guest.h
View File

@ -93,8 +93,6 @@ bool vm_lapic_disabled(struct vm *vm);
uint64_t vcpumask2pcpumask(struct vm *vm, uint64_t vdmask); uint64_t vcpumask2pcpumask(struct vm *vm, uint64_t vdmask);
int gva2gpa(struct vcpu *vcpu, uint64_t gva, uint64_t *gpa, uint32_t *err_code); int gva2gpa(struct vcpu *vcpu, uint64_t gva, uint64_t *gpa, uint32_t *err_code);
int vm_gva2gpa(struct vcpu *vcpu, uint64_t gla, uint64_t *gpa,
uint32_t *err_code);
struct vcpu *get_primary_vcpu(struct vm *vm); struct vcpu *get_primary_vcpu(struct vm *vm);
struct vcpu *vcpu_from_vid(struct vm *vm, int vcpu_id); struct vcpu *vcpu_from_vid(struct vm *vm, int vcpu_id);