On 10/03/2017 07:55 AM, Joao Martins wrote:
In order to support pvclock vdso on xen we need to setup the time info page for vcpu 0 and register the page with Xen using the VCPUOP_register_vcpu_time_memory_area hypercall. This hypercall will also forcefully update the pvti which will set some of the necessary flags for vdso. Afterwards we check if it supports the PVCLOCK_TSC_STABLE_BIT flag which is mandatory for having vdso/vsyscall support. And if so, it will set the cpu 0 pvti that will be later on used when mapping the vdso image. The xen headers are also updated to include the new hypercall for registering the secondary vcpu_time_info struct. Signed-off-by: Joao Martins <joao.m.mart...@oracle.com> Reviewed-by: Juergen Gross <jgr...@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
