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Message-ID: <CAFgQCTvtkSxXq_v6X6VW+k83rDHBiHC0HwupXBg+fSMJ-VdoSA@mail.gmail.com> Date: Fri, 13 Jan 2012 15:45:06 +0800 From: Liu ping fan <kernelfans@...il.com> To: Stefan Hajnoczi <stefanha@...il.com> Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: Could anybody give some description about the implement of hyercall in kvm? On Thu, Jan 12, 2012 at 5:21 PM, Stefan Hajnoczi <stefanha@...il.com> wrote: > On Thu, Jan 12, 2012 at 4:38 AM, Liu ping fan <kernelfans@...il.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 > Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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