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Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_
From: |
Haozhong Zhang |
Subject: |
Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg |
Date: |
Mon, 20 Jun 2016 15:20:30 +0800 |
User-agent: |
Mutt/1.6.1-neo (2016-05-02) |
On 06/20/16 08:56, Paolo Bonzini wrote:
>
>
> On 20/06/2016 05:09, Haozhong Zhang wrote:
> > In the current nested VMX implementation in QEMU, setup
> > MSR_IA32_FEATURE_CONTROL is left to guest. So I think, for LMCE which
> > is another feature involving MSR_IA32_FEATURE_CONTROL, we may follow
> > the existing code.
> >
> > Paolo and Radim, is there any case that objects to setting
> > MSR_IA32_FEATURE_CONTROL in QEMU?
>
> If the SDM says that the reset state of the MSR is zero, QEMU should
> initialize it to zero.
>
Yes, SDM says "This MSR is cleared to zero when a logical processor is
reset" (in section "Enabling and Entering VMX operation"), so we
should do so in qemu as well.
Thanks,
Haozhong
- [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, (continued)
- [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Haozhong Zhang, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Paolo Bonzini, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Haozhong Zhang, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Laszlo Ersek, 2016/06/17
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Raj, Ashok, 2016/06/17
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Laszlo Ersek, 2016/06/17
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Raj, Ashok, 2016/06/17
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Laszlo Ersek, 2016/06/17
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Haozhong Zhang, 2016/06/19
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Paolo Bonzini, 2016/06/20
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg,
Haozhong Zhang <=
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Haozhong Zhang, 2016/06/22
- Re: [Qemu-devel] [PATCH v4 3/3] i386: publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Laszlo Ersek, 2016/06/22
[Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Haozhong Zhang, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Paolo Bonzini, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Haozhong Zhang, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Paolo Bonzini, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Haozhong Zhang, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Eduardo Habkost, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Paolo Bonzini, 2016/06/16
- Re: [Qemu-devel] [PATCH v4 2/3] target-i386: add migration support for Intel LMCE, Eduardo Habkost, 2016/06/16