On Tue, Dec 01, 2020 at 05:38:39PM +0800, shuo.a....@intel.com wrote:
> From: Shuo Liu <shuo.a....@intel.com>
>
> The Service VM communicates with the hypervisor via conventional
> hypercalls. VMCALL instruction is used to make the hypercalls.
>
> ACRN hypercall ABI:
> * Hypercall number is in R8 register.
> * Up to 2 parameters are in RDI and RSI registers.
> * Return value is in RAX register.
>
> Introduce the ACRN hypercall interfaces. Because GCC doesn't support R8
> register as direct register constraints, use supported constraint as
> input with a explicit MOV to R8 in beginning of asm.
>
> Originally-by: Yakui Zhao <yakui.z...@intel.com>
> Signed-off-by: Shuo Liu <shuo.a....@intel.com>
> Reviewed-by: Reinette Chatre <reinette.cha...@intel.com>
> Reviewed-by: Nick Desaulniers <ndesaulni...@google.com>
> Cc: Dave Hansen <dave.han...@intel.com>
> Cc: Sean Christopherson <sean.j.christopher...@intel.com>
> Cc: Dan Williams <dan.j.willi...@intel.com>
> Cc: Fengwei Yin <fengwei....@intel.com>
> Cc: Zhi Wang <zhi.a.w...@intel.com>
> Cc: Zhenyu Wang <zhen...@linux.intel.com>
> Cc: Yu Wang <yu1.w...@intel.com>
> Cc: Reinette Chatre <reinette.cha...@intel.com>
> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
> Cc: Borislav Petkov <b...@alien8.de>
> Cc: Arvind Sankar <nived...@alum.mit.edu>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Nick Desaulniers <ndesaulni...@google.com>
> Cc: Segher Boessenkool <seg...@kernel.crashing.org>
> ---
> arch/x86/include/asm/acrn.h | 54 +++++++++++++++++++++++++++++++++++++
> 1 file changed, 54 insertions(+)
The x86 bits in patches 2-4 look ok now, thanks!
Acked-by: Borislav Petkov <b...@suse.de>
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
