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| author |   Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2019-07-03 22:33:59 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-07-04 22:23:38 +1000 |
| commit | 5a1ea4774ddc2c6bc3ba1415880091eccf1a901e (patch) | |
| tree | 3b14ac77f6019ed7e24b43edbbdb5a1743924f48 /arch/powerpc/include/asm/lppaca.h | |
| parent | powerpc/pseries: Generalize hcall_vphn() (diff) | |
| download | linux-dev-5a1ea4774ddc2c6bc3ba1415880091eccf1a901e.tar.xz linux-dev-5a1ea4774ddc2c6bc3ba1415880091eccf1a901e.zip | |
powerpc/pseries: Move mm/book3s64/vphn.c under platforms/pseries/
hcall_vphn() is specific to pseries and will be used in a subsequent
patch. So, move it to a more appropriate place under
arch/powerpc/platforms/pseries. Also merge vphn.h into lppaca.h
and update vphn selftest to use the new files.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/include/asm/lppaca.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h index e45b7293414d..f5195b4d9ffb 100644 --- a/arch/powerpc/include/asm/lppaca.h +++ b/arch/powerpc/include/asm/lppaca.h @@ -18,6 +18,29 @@ */ #ifndef _ASM_POWERPC_LPPACA_H #define _ASM_POWERPC_LPPACA_H + +/* + * The below VPHN macros are outside the __KERNEL__ check since these are + * used for compiling the vphn selftest in userspace + */ + +/* 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 + #ifdef __KERNEL__ /* @@ -179,6 +202,7 @@ extern void (*dtl_consumer)(struct dtl_entry *entry, u64 index); extern void register_dtl_buffer(int cpu); extern void alloc_dtl_buffers(void); +extern long hcall_vphn(unsigned long cpu, u64 flags, __be32 *associativity); #endif /* CONFIG_PPC_BOOK3S */ #endif /* __KERNEL__ */ |