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| author |   Michael Ellerman <mpe@ellerman.id.au> | 2023-08-23 15:53:14 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-24 22:33:16 +1000 |
| commit | c040c7488b6a89c98dd0f6dd5f001101413779e2 (patch) | |
| tree | ccf56fe13c89388f06d4bb0cd3d0fb483994a2fd /arch/powerpc/include/asm/vphn.h | |
| parent | cxl: Drop unused detach_spa() (diff) | |
| download | wireguard-linux-c040c7488b6a89c98dd0f6dd5f001101413779e2.tar.xz wireguard-linux-c040c7488b6a89c98dd0f6dd5f001101413779e2.zip | |
powerpc/pseries: Move VPHN constants into vphn.h
These don't have any particularly good reason to belong in lppaca.h,
move them into their own header.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230823055317.751786-1-mpe@ellerman.id.au
Diffstat (limited to 'arch/powerpc/include/asm/vphn.h')
| -rw-r--r-- | arch/powerpc/include/asm/vphn.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/vphn.h b/arch/powerpc/include/asm/vphn.h new file mode 100644 index 000000000000..e0970603fce2 --- /dev/null +++ b/arch/powerpc/include/asm/vphn.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +#ifndef _ASM_POWERPC_VPHN_H +#define _ASM_POWERPC_VPHN_H + +/* The H_HOME_NODE_ASSOCIATIVITY h_call returns 6 64-bit registers. */ +#define VPHN_REGISTER_COUNT 6 + +/* + * 6 64-bit registers unpacked into up to 24 be32 associativity values. To + * form the complete property we have to add the length in the first cell. + */ +#define VPHN_ASSOC_BUFSIZE (VPHN_REGISTER_COUNT*sizeof(u64)/sizeof(u16) + 1) + +/* + * The H_HOME_NODE_ASSOCIATIVITY hcall takes two values for flags: + * 1 for retrieving associativity information for a guest cpu + * 2 for retrieving associativity information for a host/hypervisor cpu + */ +#define VPHN_FLAG_VCPU 1 +#define VPHN_FLAG_PCPU 2 + +#endif // _ASM_POWERPC_VPHN_H |