1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 #ifndef _ASM_POWERPC_VPHN_H 3 #define _ASM_POWERPC_VPHN_H 4 5 /* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */ 6 #define VPHN_REGISTER_COUNT 6 7 8 /* 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. 11 */ 12 #define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1) 13 14 /* 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 18 */ 19 #define VPHN_FLAG_VCPU 1 20 #define VPHN_FLAG_PCPU 2 21 22 long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity); 23 24 #endif // _ASM_POWERPC_VPHN_H 25
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