1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _ASM_POWERPC_VPHN_H
3 #define _ASM_POWERPC_VPHN_H
5 /* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */
6 #define VPHN_REGISTER_COUNT 6
9 * 6 64-bit registers unpacked into up to 24 be32 associativity values. To
10 * form the complete property we have to add the length in the first cell.
12 #define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1)
15 * The H_HOME_NODE_ASSOCIATIVITY hcall takes two values for flags:
16 * 1 for retrieving associativity information for a guest cpu
17 * 2 for retrieving associativity information for a host/hypervisor cpu
19 #define VPHN_FLAG_VCPU 1
20 #define VPHN_FLAG_PCPU 2
22 long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity);
24 #endif // _ASM_POWERPC_VPHN_H