[kvm-devel] multiple allocation for vmcs or am i missing something.
When kvm initializes, it calls hardware_setup which calls alloc_kvm_area which allocates vmcs for each online processor and stores the pointer in percpu basis. Later when vmx_create_vcpu is called, the vmcs area is allocated (again) and this time for the cpu the code is currently executing on. possibly it is already allocated. Is this a bug or i am missing something. -- --- regards Manish Regmi - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] multiple allocation for vmcs or am i missing something.
Manish Regmi wrote: > When kvm initializes, it calls hardware_setup which calls > alloc_kvm_area which allocates vmcs for each online processor and > stores the pointer in percpu basis. > VT requires a per-cpu page to store the host state in when VMLAUNCH is executed. This is the host save area and it's passed to the VMXON instruction in hardware_enable(). It's the VMCS for the host. Regards, Anthony Liguori > Later when vmx_create_vcpu is called, the vmcs area is allocated > (again) and this time for the cpu the code is currently executing on. > possibly it is already allocated. > > Is this a bug or i am missing something. > > > - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] multiple allocation for vmcs or am i missing something.
On Thu, 8 Feb 2007 21:06:37 +0545 "Manish Regmi" <[EMAIL PROTECTED]> wrote: > Later when vmx_create_vcpu is called, the vmcs area is allocated > (again) and this time for the cpu the code is currently executing on. > possibly it is already allocated. > > Is this a bug or i am missing something. Hello, I don't see where vmx_create_vcpu is called again. I think that it is called only once from 'r = kvm_arch_ops->vcpu_create(vcpu)'. Thus I don't think that vmcs area is allocated twice for each vcpu. Regards, Guillaume - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
Re: [kvm-devel] multiple allocation for vmcs or am i missing something.
On 2/9/07, Guillaume Thouvenin <[EMAIL PROTECTED]> wrote: > Hello, > > I don't see where vmx_create_vcpu is called again. I think that it is > called only once from 'r = kvm_arch_ops->vcpu_create(vcpu)'. Thus I don't > think that vmcs area is allocated twice for each vcpu. > > Regards, > Guillaume > I was was confused when alloc_vmcs_cpu was called twice while hardware_setup and vmx_create_vcpu. it is clear to me now. thanks... -- --- regards Manish Regmi - Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier. Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 ___ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
