On Wed 30.Dec'20 at 18:33:05 +0100, Borislav Petkov wrote:
On Tue, Dec 01, 2020 at 05:38:39PM +0800, [email protected] wrote:
From: Shuo Liu <[email protected]>
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 <[email protected]>
Signed-off-by: Shuo Liu <[email protected]>
Reviewed-by: Reinette Chatre <[email protected]>
Reviewed-by: Nick Desaulniers <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Sean Christopherson <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Fengwei Yin <[email protected]>
Cc: Zhi Wang <[email protected]>
Cc: Zhenyu Wang <[email protected]>
Cc: Yu Wang <[email protected]>
Cc: Reinette Chatre <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Arvind Sankar <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Nick Desaulniers <[email protected]>
Cc: Segher Boessenkool <[email protected]>
---
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 <[email protected]>
Thanks for review!
Shuo
