* arch/powerpc/perf/vpa-dtl.c:254:30: sparse: sparse: incorrect type in assignment (different base types)
@ 2025-12-15 7:05 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2025-12-15 7:05 UTC (permalink / raw)
To: Kajol Jain; +Cc: oe-kbuild-all, linux-kernel, Madhavan Srinivasan
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
commit: 4708fba19adee9ba14ef28af6face4ab043d9cd6 powerpc/vpa_dtl: Add interface to expose vpa dtl counters via perf
date: 3 months ago
config: powerpc64-randconfig-r133-20251215 (https://download.01.org/0day-ci/archive/20251215/202512151425.cwUtLbPF-lkp@intel.com/config)
compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251215/202512151425.cwUtLbPF-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512151425.cwUtLbPF-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> arch/powerpc/perf/vpa-dtl.c:254:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] @@ got restricted __be32 [usertype] @@
arch/powerpc/perf/vpa-dtl.c:254:30: sparse: expected unsigned int [usertype]
arch/powerpc/perf/vpa-dtl.c:254:30: sparse: got restricted __be32 [usertype]
vim +254 arch/powerpc/perf/vpa-dtl.c
241
242 static int vpa_dtl_event_add(struct perf_event *event, int flags)
243 {
244 int ret, hwcpu;
245 unsigned long addr;
246 struct vpa_dtl *dtl = &per_cpu(vpa_dtl_cpu, event->cpu);
247
248 /*
249 * Register our dtl buffer with the hypervisor. The
250 * HV expects the buffer size to be passed in the second
251 * word of the buffer. Refer section '14.11.3.2. H_REGISTER_VPA'
252 * from PAPR for more information.
253 */
> 254 ((u32 *)dtl->buf)[1] = cpu_to_be32(DISPATCH_LOG_BYTES);
255 dtl->last_idx = 0;
256
257 hwcpu = get_hard_smp_processor_id(event->cpu);
258 addr = __pa(dtl->buf);
259
260 ret = register_dtl(hwcpu, addr);
261 if (ret) {
262 pr_warn("DTL registration for cpu %d (hw %d) failed with %d\n",
263 event->cpu, hwcpu, ret);
264 return ret;
265 }
266
267 /* set our initial buffer indices */
268 lppaca_of(event->cpu).dtl_idx = 0;
269
270 /*
271 * Ensure that our updates to the lppaca fields have
272 * occurred before we actually enable the logging
273 */
274 smp_wmb();
275
276 /* enable event logging */
277 lppaca_of(event->cpu).dtl_enable_mask = event->attr.config;
278
279 vpa_dtl_start_hrtimer(event);
280
281 return 0;
282 }
283
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* arch/powerpc/perf/vpa-dtl.c:254:30: sparse: sparse: incorrect type in assignment (different base types)
@ 2026-01-17 16:01 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-01-17 16:01 UTC (permalink / raw)
To: Kajol Jain; +Cc: oe-kbuild-all, linux-kernel, Madhavan Srinivasan
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: d3eeb99bbc99cc5eb94a4a75ed4415a0272254ef
commit: 4708fba19adee9ba14ef28af6face4ab043d9cd6 powerpc/vpa_dtl: Add interface to expose vpa dtl counters via perf
date: 4 months ago
config: powerpc64-randconfig-r111-20260117 (https://download.01.org/0day-ci/archive/20260117/202601172326.7KiWQt28-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 9b8addffa70cee5b2acc5454712d9cf78ce45710)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260117/202601172326.7KiWQt28-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601172326.7KiWQt28-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> arch/powerpc/perf/vpa-dtl.c:254:30: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] @@ got restricted __be32 [usertype] @@
arch/powerpc/perf/vpa-dtl.c:254:30: sparse: expected unsigned int [usertype]
arch/powerpc/perf/vpa-dtl.c:254:30: sparse: got restricted __be32 [usertype]
vim +254 arch/powerpc/perf/vpa-dtl.c
241
242 static int vpa_dtl_event_add(struct perf_event *event, int flags)
243 {
244 int ret, hwcpu;
245 unsigned long addr;
246 struct vpa_dtl *dtl = &per_cpu(vpa_dtl_cpu, event->cpu);
247
248 /*
249 * Register our dtl buffer with the hypervisor. The
250 * HV expects the buffer size to be passed in the second
251 * word of the buffer. Refer section '14.11.3.2. H_REGISTER_VPA'
252 * from PAPR for more information.
253 */
> 254 ((u32 *)dtl->buf)[1] = cpu_to_be32(DISPATCH_LOG_BYTES);
255 dtl->last_idx = 0;
256
257 hwcpu = get_hard_smp_processor_id(event->cpu);
258 addr = __pa(dtl->buf);
259
260 ret = register_dtl(hwcpu, addr);
261 if (ret) {
262 pr_warn("DTL registration for cpu %d (hw %d) failed with %d\n",
263 event->cpu, hwcpu, ret);
264 return ret;
265 }
266
267 /* set our initial buffer indices */
268 lppaca_of(event->cpu).dtl_idx = 0;
269
270 /*
271 * Ensure that our updates to the lppaca fields have
272 * occurred before we actually enable the logging
273 */
274 smp_wmb();
275
276 /* enable event logging */
277 lppaca_of(event->cpu).dtl_enable_mask = event->attr.config;
278
279 vpa_dtl_start_hrtimer(event);
280
281 return 0;
282 }
283
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2026-01-17 16:02 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-12-15 7:05 arch/powerpc/perf/vpa-dtl.c:254:30: sparse: sparse: incorrect type in assignment (different base types) kernel test robot
-- strict thread matches above, loose matches on Subject: below --
2026-01-17 16:01 kernel test robot
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox