search for: hypercall_page_initialise

Xen Developers, I noticed that my PV ops guests cause the hypervisor to invoke hypercall_page_initialise twice from traps.c (i.e. through wrmsr_hypervisor_regs), for different hypercall_page addresses. Looking at the code, I see hvmloader.c causing one of those, in its main. I read the HVM Loader Xen wiki page, Googled, spelunked the source, etc. but cannot find where / why the other hypercall page is...

Hypercall_page is actually a code page, which contains 32 hypercall entry. every entry is something like "mov $__HYPERVISOR_xxx,%eax int $0x82 " It is initialized in hypercall_page_initialise(void *hypercall_page) at the time when control panel creates the domain. Later, domain can simply the corresponding entry to issue a hypercall. For the subroutine of the HYPERVISOR_xxx, usually it is do_xxx. For example, __HYPERVISOR_sched_op should be do_sched_op. For more information, please r...

Hello, I am studing Xen hypercall now. I found that hypercall is invoked via hypercall_page, which is only filled with (in no-hypervisor-kernel-mode ): mov $i, %eax int $0x82 ret Why not invoked the hypercall directly by "int $0x82" ? What''s the advantage of using hypercall_page? Thanks, Wu _______________________________________________ Xen-devel mailing list

This patch series is a reworking of a series developed by Mukesh Rathor at Oracle. The entirety of the design and development was done by him; I have only reworked, reorganized, and simplified things in a way that I think makes more sense. The vast majority of the credit for this effort therefore goes to him. This version is labelled v13 because it is based on his most recent series, v11.