From: Paolo Bonzini <pbonzini@redhat.com>
To: "jack.chen" <zhunxun@gmail.com>, KVM maillist <kvm@vger.kernel.org>
Subject: Re: kvm VMCALL question
Date: Mon, 2 Jan 2017 10:36:06 +0100 [thread overview]
Message-ID: <d2215b6f-76cd-be03-0d9f-f3ea32856ec3@redhat.com> (raw)
In-Reply-To: <CADUDsArNzwcNRDHuEyjLR4v9DxpZCdMnTR=eWJT2_mJzM7aBoA@mail.gmail.com>
On 30/12/2016 10:14, jack.chen wrote:
> hello ,I execute VMCALL in virtual machine，But no vm exit occured,is
> the VMCALL need set some bit in register or VMCS ??
> thanks!
> #define VMCALL_M __asm _EMIT 0x0f __asm _EMIT 0x01 __asm _EMIT 0xc1
If you're expecting an exit to QEMU, you won't get it; VMCALL is usually
handled entirely in the kernel.
Paolo
next prev parent reply other threads:[~2017-01-02 9:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-30 9:14 kvm VMCALL question jack.chen
2017-01-02 9:12 ` Fwd: " jack.chen
2017-01-02 9:36 ` Paolo Bonzini [this message]
[not found] ` <CADUDsAr4yajRe8ig9Zsokn=SZo9HND-mWd9sP1KCrqucOPmb2g@mail.gmail.com>
[not found] ` <22d29f63-6f16-dbf6-9682-9fb1cbbf2f44@redhat.com>
2017-01-02 10:24 ` jack.chen
[not found] ` <CAAuJbe+RrRDLGLrwLJHQFiVfPN_6jeXyoati+HMo8o1docFKUw@mail.gmail.com>
2017-01-03 12:35 ` jack.chen
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