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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 30/06/2022 11:39, Sudeep Holla wrote: > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe > > On Wed, Jun 29, 2022 at 11:25:41PM +0000, Conor.Dooley@microchip.com wrote: >> On 29/06/2022 21:32, Conor.Dooley@microchip.com wrote: >>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>> >>> On 29/06/2022 20:54, Sudeep Holla wrote: >>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>>> >>>> On Wed, Jun 29, 2022 at 07:39:43PM +0000, Conor.Dooley@microchip.com wrote: >>>>> On 29/06/2022 19:42, Sudeep Holla wrote: >>>>>> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe >>>>>> >>>>>> On Wed, Jun 29, 2022 at 06:18:25PM +0000, Conor.Dooley@microchip.com wrote: >>>>>>> >>>>>>> No, no it doesn't. Not sure what I was thinking there. >>>>>>> Prob tested that on the the last commit that bisect tested >>>>>>> rather than the one it pointed out the problem was with. >>>>>>> >>>>>>> Either way, boot is broken in -next. >>>>>>> >>>>>> >>>>>> Can you check if the below fixes the issue? >>>>> >>>>> Unfortunately, no joy. >>>>> Applied to a HEAD of 3b23bb2573e6 ("arch_topology: Use the >>>>> last level cache information from the cacheinfo"). >>>> >>>> That's bad. Does the system boot with >>>> Commit 2f7b757eb69d ("arch_topology: Add support to parse and detect cache >>>> attributes") ? >>> >>> It does. >> > > I can't think of any reason for that to happen unless detect_cache_attributes > is failing from init_cpu_topology and we are ignoring that. > > Are all RISC-V platforms failing on -next or is it just this platform ? I don't know. I only have SoCs with this core complex & one that does not work with upstream. I can try my other board with this SoC - but I am on leave at the moment w/ a computer or internet during the day so it may be a few days before I can try it. However, Niklas Cassel has tried to use the Canaan K210 on next-20220630 but had issues with RCU stalling: https://lore.kernel.org/linux-riscv/Yr3PKR0Uj1bE5Y6O@x1-carbon/T/#m52016996fcf5fa0501066d73352ed8e806803e06 Not going to claim any relation, but that's minus 1 to the platforms that can be used to test this on upstream RISC-V. > We may have to try with some logs in detect_cache_attributes, > last_level_cache_is_valid and last_level_cache_is_shared to check where it > is going wrong. > > It must be crashing in smp_callin->update_siblings_masks->last_level_cache_is_shared Yeah, I was playing around last night for a while but didn't figure out the root cause. I'll try again tonight. In the meantime, would you mind taking the patches out of -next? FWIW I repro'd the failure on next-20220630. Thanks, Conor. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel