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Re: [Qemu-devel] [PULL 22/25] target/i386: kvm: Add nested migration blo
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] [PULL 22/25] target/i386: kvm: Add nested migration blocker only when kernel lacks required capabilities |
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Date: |
Wed, 10 Jul 2019 18:08:41 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 10.07.19 16:40, Paolo Bonzini wrote:
> On 08/07/19 20:31, Jan Kiszka wrote:
>>> - if (cpu_has_nested_virt(env) && !env->nested_state) {
>>> + if (kvm_enabled() && cpu_has_vmx(env) && !env->nested_state) {
>>> error_report("Guest enabled nested virtualization but kernel "
>>> "does not support saving of nested state");
>>> return -EINVAL;
>>>
>> Starting with this commit latest (bisection issue...), running Jailhouse in a
>> guest first stalls L1 (looks like we lose interrupts), and if I try to reset
>> that VM, I lose my host as well:
>
> If 5.2 is still broken, can you gather a dump of KVM_SET_NESTED_STATE's
> payload?
savevm or is there a dump function in QEMU or the kernel?
Jan
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