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| author |   Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2019-07-03 22:33:58 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-07-04 22:23:38 +1000 |
| commit | ef34e0efa22a867f8db16feb79fba9964cfbe253 (patch) | |
| tree | 8da2d8e0af59be1127348854d04082fdbcd47fb3 /arch/powerpc/mm/book3s64/vphn.h | |
| parent | powerpc/pseries: Introduce rwlock to gatekeep DTLB usage (diff) | |
| download | linux-dev-ef34e0efa22a867f8db16feb79fba9964cfbe253.tar.xz linux-dev-ef34e0efa22a867f8db16feb79fba9964cfbe253.zip | |
powerpc/pseries: Generalize hcall_vphn()
H_HOME_NODE_ASSOCIATIVITY hcall can take two different flags and return
different associativity information in each case. Generalize the
existing hcall_vphn() function to take flags as an argument and to
return the result. Update the only existing user to pass the proper
arguments.
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 'arch/powerpc/mm/book3s64/vphn.h')
| -rw-r--r-- | arch/powerpc/mm/book3s64/vphn.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/book3s64/vphn.h b/arch/powerpc/mm/book3s64/vphn.h index f0b93c2dd578..f7ff1e0c3801 100644 --- a/arch/powerpc/mm/book3s64/vphn.h +++ b/arch/powerpc/mm/book3s64/vphn.h @@ -11,6 +11,14 @@ */ #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 + extern int vphn_unpack_associativity(const long *packed, __be32 *unpacked); #endif |