Hypervisor Platform无法执行xmm寄存器fpu指令sse解决方法

先设置cr4的这些位
#define CR4_OSXSAVE_MASK (1U << 18)
#define CR4_OSFXSR_SHIFT 9
#define CR4_OSFXSR_MASK (1U << CR4_OSFXSR_SHIFT)
#define CR4_OSXMMEXCPT_MASK (1U << 10)
 RegisterName = WHvX64RegisterCr4;
    uint64_t cr4val = 0;
    whpx_get_reg(RegisterName, &cr4val);
    cr4val = (cr4val | (1ULL << 5)) & ~(1 << 24);
    cr4val |= CR4_OSXSAVE_MASK;
    cr4val |= CR4_OSFXSR_MASK;
    cr4val |= CR4_OSXMMEXCPT_MASK;
    whpx_set_reg(RegisterName, cr4val);
    //再设置WHvX64RegisterXCr0的这些位
    #define XSTATE_FP_BIT                   0
#define XSTATE_SSE_BIT                  1
#define XSTATE_FP_MASK                  (1ULL << XSTATE_FP_BIT)
#define XSTATE_SSE_MASK                 (1ULL << XSTATE_SSE_BIT)
WHV_REGISTER_VALUE xcr0;
    WHV_REGISTER_NAME xcr0_name = WHvX64RegisterXCr0;

    if (!whpx_has_xsave()) {
        return;
    }
    env->xcr0 |= XSTATE_FP_MASK;
    env->xcr0 |= XSTATE_SSE_MASK;
    /* Only xcr0 is supported by the hypervisor currently */
    xcr0.Reg64 = env->xcr0;
    hr = WHvSetVirtualProcessorRegisters(whpx->partition, whpx->cpu_index,
                                         &xcr0_name, 1, &xcr0);
                                         
就可以执行xmm指令了
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