On Wed 30.Dec'20 at 18:33:05 +0100, Borislav Petkov wrote:
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>
Thanks for review!
Shuo
