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spapr: nested: Introduce H_GUEST_[GET|SET]_STATE hcalls.

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Introduce the nested PAPR hcalls:
    - H_GUEST_GET_STATE which is used to get state of a nested guest or
      a guest VCPU. The value field for each element in the request is
      destination to be updated to reflect current state on success.
    - H_GUEST_SET_STATE which is used to modify the state of a guest or
      a guest VCPU. On success, guest (or its VCPU) state shall be
      updated as per the value field for the requested element(s).

Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
This commit is contained in:
Harsh Prateek Bora 2024-03-08 16:49:37 +05:30 • committed by Nicholas Piggin
parent 4a575f9a05
commit 64c43909b2
3 changed files with 294 additions and 0 deletions
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3
include/hw/ppc/spapr.h
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@ -366,6 +366,7 @@ struct SpaprMachineState {
#define H_OVERLAP -68
#define H_STATE -75
#define H_IN_USE -77
#define H_INVALID_ELEMENT_VALUE -81
#define H_UNSUPPORTED_FLAG -256
#define H_MULTI_THREADS_ACTIVE -9005
@ -589,6 +590,8 @@ struct SpaprMachineState {
#define H_GUEST_SET_CAPABILITIES 0x464
#define H_GUEST_CREATE 0x470
#define H_GUEST_CREATE_VCPU 0x474
#define H_GUEST_GET_STATE 0x478
#define H_GUEST_SET_STATE 0x47C
#define H_GUEST_DELETE 0x488
#define MAX_HCALL_OPCODE H_GUEST_DELETE