Messages in this thread | | | Date | Fri, 13 Jan 2012 15:45:06 +0800 | Subject | Re: Could anybody give some description about the implement of hyercall in kvm? | From | Liu ping fan <> |
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On Thu, Jan 12, 2012 at 5:21 PM, Stefan Hajnoczi <stefanha@gmail.com> wrote: > On Thu, Jan 12, 2012 at 4:38 AM, Liu ping fan <kernelfans@gmail.com> wrote: >> Could anybody give some description about the implement of hyercall in >> kvm? Or give some links about it? > > Try git grep hypercall arch/x86/kvm. > > Take a look at arch/x86/kvm/x86.c kvm_set_msr_common() and > kvm_emulate_hypercall(). Some of the KVM time-keeping, minimal HyperV > support, and async page faults live there. Also see > arch/x86/include/asm/kvm_para.h. > > Hypercalls are architecture-specific so if you are interested in ppc > or s390, check those arch directories. > Thanks, but when I tried to start from the macro "____PVOP_VCALL", but lost in it. If there is some document like the hypercall in Xen, this will be appreciated. (And I guest Hypercall in kvm is the same as Xen which is very similar to syscall, right?)
Thanks ping fan
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