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Re: [RFC v11 17/55] target/arm: kvm: add stubs for some helpers


From: Richard Henderson
Subject: Re: [RFC v11 17/55] target/arm: kvm: add stubs for some helpers
Date: Wed, 24 Mar 2021 12:54:29 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.1

On 3/23/21 9:46 AM, Claudio Fontana wrote:
+/* return the effective value of HCR_EL2. For KVM, always 0. */
+uint64_t arm_hcr_el2_eff(CPUARMState *env)
+{
+    return 0;
+}

Oh, amusingly, patches for kvm nested virtualization,

cover.1616052889.git.haibo.xu@linaro.org/">https://patchew.org/QEMU/cover.1616052889.git.haibo.xu@linaro.org/

mean that the guest *can* run in EL2, and this always 0 comment isn't true.

So we'll need to keep the original copy of this function in an accelerator agnostic place.


r~



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