diff options
| author | Srikar Dronamraju <srikar@linux.vnet.ibm.com> | 2020-01-29 19:22:58 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-03-04 22:44:30 +1100 |
| commit | 76b7bfb1732d139dc20a2f0c19ec32e09c8891cf (patch) | |
| tree | a63279d70524b7eab8e88cc225453cc02e94706e /arch/powerpc/mm/numa.c | |
| parent | e7214ae9d85aa325c9f3cb34bf4fad7f112861d7 (diff) | |
| download | linux-76b7bfb1732d139dc20a2f0c19ec32e09c8891cf.tar.gz | |
powerpc/numa: Handle extra hcall_vphn error cases
Currently code handles H_FUNCTION, H_SUCCESS, H_HARDWARE return codes.
However hcall_vphn can return other return codes. Now it also handles
H_PARAMETER return code. Also the rest return codes are handled under the
default case.
Signed-off-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Reported-by: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Reviewed-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200129135301.24739-3-srikar@linux.vnet.ibm.com
Diffstat (limited to 'arch/powerpc/mm/numa.c')
| -rw-r--r-- | arch/powerpc/mm/numa.c | 25 |
1 files changed, 16 insertions, 9 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 3c7dec70cda09..2cb87c9a05441 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1191,23 +1191,30 @@ static long vphn_get_associativity(unsigned long cpu, VPHN_FLAG_VCPU, associativity); switch (rc) { + case H_SUCCESS: + dbg("VPHN hcall succeeded. Reset polling...\n"); + timed_topology_update(0); + goto out; + case H_FUNCTION: - printk_once(KERN_INFO - "VPHN is not supported. Disabling polling...\n"); - stop_topology_update(); + pr_err_ratelimited("VPHN unsupported. Disabling polling...\n"); break; case H_HARDWARE: - printk(KERN_ERR - "hcall_vphn() experienced a hardware fault " + pr_err_ratelimited("hcall_vphn() experienced a hardware fault " "preventing VPHN. Disabling polling...\n"); - stop_topology_update(); break; - case H_SUCCESS: - dbg("VPHN hcall succeeded. Reset polling...\n"); - timed_topology_update(0); + case H_PARAMETER: + pr_err_ratelimited("hcall_vphn() was passed an invalid parameter. " + "Disabling polling...\n"); + break; + default: + pr_err_ratelimited("hcall_vphn() returned %ld. Disabling polling...\n" + , rc); break; } + stop_topology_update(); +out: return rc; } |