From: Sudeep Holla <sudeep.holla@arm.com>
To: Conor.Dooley@microchip.com
Cc: linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
atishp@atishpatra.org, atishp@rivosinc.com,
vincent.guittot@linaro.org, dietmar.eggemann@arm.com,
wangqing@vivo.com, robh+dt@kernel.org, rafael@kernel.org,
ionela.voinescu@arm.com, pierre.gondois@arm.com,
linux-arm-kernel@lists.infradead.org,
linux-riscv@lists.infradead.org, gshan@redhat.com,
Valentina.FernandezAlanis@microchip.com
Subject: Re: [PATCH v5 09/19] arch_topology: Use the last level cache information from the cacheinfo
Date: Wed, 29 Jun 2022 19:47:08 +0100 [thread overview]
Message-ID: <20220629184708.x5exgjoy4sblyqml@bogus> (raw)
In-Reply-To: <3656a067-cc3f-fd5b-e339-5925a856cce1@microchip.com>
On Wed, Jun 29, 2022 at 06:18:25PM +0000, Conor.Dooley@microchip.com wrote:
> On 29/06/2022 18:49, Conor.Dooley@microchip.com wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >
> > On 27/06/2022 17:50, Sudeep Holla wrote:
> >> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >>
> >> The cacheinfo is now initialised early along with the CPU topology
> >> initialisation. Instead of relying on the LLC ID information parsed
> >> separately only with ACPI PPTT elsewhere, migrate to use the similar
> >> information from the cacheinfo.
> >>
> >> This is generic for both DT and ACPI systems. The ACPI LLC ID information
> >> parsed separately can now be removed from arch specific code.
> >
> > Hey Sudeep,
> > I bisected broken boot on PolarFire SoC to this patch in next-20220629 :/
> > I suspect the issue is a missing "next-level-cache" in the the dt:
> > arch/riscv/boot/dts/microchip/mpfs.dtsi
Good that I included this in -next, I had not received any feedback from
RISC-V even after 5 iterations. I also see this DTS is very odd. It also
states CPU0 doesn't have L1-D$ while the other 4 CPUs have L1-D$. Is that
a mistake or is it the reality ? Another breakage in userspace cacheinfo
sysfs entry of cpu0 has both I$ and D$.
--
Regards,
Sudeep
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next prev parent reply other threads:[~2022-06-29 18:49 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-27 16:50 [PATCH v5 00/19] arch_topology: Updates to add socket support and fix cluster ids Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 01/19] ACPI: PPTT: Use table offset as fw_token instead of virtual address Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 02/19] cacheinfo: Use of_cpu_device_node_get instead cpu_dev->of_node Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 03/19] cacheinfo: Add helper to access any cache index for a given CPU Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 04/19] cacheinfo: Move cache_leaves_are_shared out of CONFIG_OF Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 05/19] cacheinfo: Add support to check if last level cache(LLC) is valid or shared Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 06/19] cacheinfo: Allow early detection and population of cache attributes Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 07/19] cacheinfo: Use cache identifiers to check if the caches are shared if available Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 08/19] arch_topology: Add support to parse and detect cache attributes Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 09/19] arch_topology: Use the last level cache information from the cacheinfo Sudeep Holla
2022-06-29 17:49 ` Conor.Dooley
2022-06-29 18:18 ` Conor.Dooley
2022-06-29 18:33 ` Sudeep Holla
2022-06-29 18:42 ` Sudeep Holla
2022-06-29 19:39 ` Conor.Dooley
2022-06-29 19:54 ` Sudeep Holla
2022-06-29 20:32 ` Conor.Dooley
2022-06-29 23:25 ` Conor.Dooley
2022-06-30 10:39 ` Sudeep Holla
2022-06-30 16:37 ` Conor.Dooley
2022-06-30 17:35 ` Sudeep Holla
2022-06-30 19:20 ` Conor.Dooley
2022-06-30 20:07 ` Sudeep Holla
2022-06-30 20:13 ` Conor.Dooley
2022-06-30 20:21 ` Sudeep Holla
2022-06-30 22:07 ` Conor.Dooley
2022-07-01 11:11 ` Sudeep Holla
2022-07-01 14:47 ` Conor.Dooley
2022-06-29 18:47 ` Sudeep Holla [this message]
2022-06-29 18:56 ` Conor.Dooley
2022-06-29 19:12 ` Sudeep Holla
2022-06-29 19:25 ` Conor.Dooley
2022-06-29 19:43 ` Sudeep Holla
2022-06-29 19:52 ` Conor.Dooley
2022-06-29 18:29 ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 10/19] arm64: topology: Remove redundant setting of llc_id in CPU topology Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 11/19] arch_topology: Drop LLC identifier stash from the " Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 12/19] arch_topology: Set thread sibling cpumask only within the cluster Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 13/19] arch_topology: Check for non-negative value rather than -1 for IDs validity Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 14/19] arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 16/19] arch_topology: Limit span of cpu_clustergroup_mask() Sudeep Holla
2022-06-28 10:28 ` Vincent Guittot
2022-06-27 16:50 ` [PATCH v5 17/19] arch_topology: Set cluster identifier in each core/thread from /cpu-map Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 18/19] arch_topology: Add support for parsing sockets in /cpu-map Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 19/19] arch_topology: Warn that topology for nested clusters is not supported Sudeep Holla
2022-06-29 13:06 ` [PATCH] ACPI: Remove the unused find_acpi_cpu_cache_topology() Sudeep Holla
2022-06-29 13:50 ` Rafael J. Wysocki
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