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spapr: nested: Introduce H_GUEST_[CREATE|DELETE] hcalls.

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Introduce the nested PAPR hcalls:
    - H_GUEST_CREATE which is used to create and allocate resources for
nested guest being created.
    - H_GUEST_DELETE which is used to delete and deallocate resources
for the nested guest being deleted. It also supports deleting all nested
guests at once using a deleteAll flag.

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 16:49:33 +05:30 • committed by Nicholas Piggin
parent 71c33ef000
commit f560562602
3 changed files with 113 additions and 1 deletions
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4
include/hw/ppc/spapr.h
View file

@ -586,8 +586,10 @@ struct SpaprMachineState {
#define H_WATCHDOG 0x45C
#define H_GUEST_GET_CAPABILITIES 0x460
#define H_GUEST_SET_CAPABILITIES 0x464
#define H_GUEST_CREATE 0x470
#define H_GUEST_DELETE 0x488
#define MAX_HCALL_OPCODE H_GUEST_SET_CAPABILITIES
#define MAX_HCALL_OPCODE H_GUEST_DELETE
/* The hcalls above are standardized in PAPR and implemented by pHyp
* as well.

7
include/hw/ppc/spapr_nested.h
View file

@ -9,8 +9,13 @@ typedef struct SpaprMachineStateNested {
#define NESTED_API_KVM_HV 1
bool capabilities_set;
uint32_t pvr_base;
GHashTable *guests;
} SpaprMachineStateNested;
typedef struct SpaprMachineStateNestedGuest {
uint32_t pvr_logical;
} SpaprMachineStateNestedGuest;
/* Nested PAPR API related macros */
#define H_GUEST_CAPABILITIES_COPY_MEM 0x8000000000000000
#define H_GUEST_CAPABILITIES_P9_MODE 0x4000000000000000
@ -20,6 +25,8 @@ typedef struct SpaprMachineStateNested {
#define H_GUEST_CAP_COPY_MEM_BMAP 0
#define H_GUEST_CAP_P9_MODE_BMAP 1
#define H_GUEST_CAP_P10_MODE_BMAP 2
#define PAPR_NESTED_GUEST_MAX 4096
#define H_GUEST_DELETE_ALL_FLAG 0x8000000000000000ULL
/*
* Register state for entering a nested guest with H_ENTER_NESTED.