diff options
| author | Christophe Lombard <clombard@linux.vnet.ibm.com> | 2018-01-11 09:55:25 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-19 23:19:37 +1100 |
| commit | b1db551324f72fa14ad82ca31237a7ed418104df (patch) | |
| tree | 3e43a06af0f301bf89b3746b82cb2e7bda7f8afc /arch/powerpc/kernel/process.c | |
| parent | 074db39e00bb0d35cda7de9a4bae3a9b6da557ad (diff) | |
cxl: Add support for ASB_Notify on POWER9
The POWER9 core supports a new feature: ASB_Notify which requires the
support of the Special Purpose Register: TIDR.
The ASB_Notify command, generated by the AFU, will attempt to
wake-up the host thread identified by the particular LPID:PID:TID.
This patch assign a unique TIDR (thread id) for the current thread which
will be used in the process element entry.
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Philippe Bergheaud <felix@linux.vnet.ibm.com>
Acked-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Reviewed-by: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/process.c')
| -rw-r--r-- | arch/powerpc/kernel/process.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index 1563d1190da3..9eb78ec0ce5b 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -1590,6 +1590,7 @@ int set_thread_tidr(struct task_struct *t) return 0; } +EXPORT_SYMBOL_GPL(set_thread_tidr); #endif /* CONFIG_PPC64 */ |