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Re: [Qemu-devel] x86 VMCS guest interruptibility state save/load
From: |
Hang Yuan |
Subject: |
Re: [Qemu-devel] x86 VMCS guest interruptibility state save/load |
Date: |
Tue, 6 Aug 2019 14:09:06 +0800 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
In summary, sounds all non-register guest states in VMCS structure are
not saved in snapshot. I don't understand why they don't need to save in
snapshot and load from snapshot to construct VMCS. Does anyone have any
idea?
Thanks,
Henry
On 7/30/19 5:05 PM, Hang Yuan wrote:
Hello all,
When I read QEMU and KVM codes on saving/loading snapshot, I don't
find the interruptibility state in x86 VMCS structure is saved and
loaded in QEMU though KVM supports getting/setting this field
from/into VMCS. (No "env.interrupt.shadow" in QEMU
vmstate_x86_cpu.fields.) I understand it may cause guest-state error
if this field is not restored but other registers or VMCS fields are
restored. Do you think it's a valid issue?
Thanks,
Henry
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