From: Pierre Gondois <pierre.gondois@arm.com> To: linux-kernel@vger.kernel.org Cc: Radu Rendec <rrendec@redhat.com>, Pierre Gondois <pierre.gondois@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Sudeep Holla <sudeep.holla@arm.com>, Jeremy Linton <jeremy.linton@arm.com>, Akihiko Odaki <akihiko.odaki@daynix.com>, Palmer Dabbelt <palmer@rivosinc.com>, Gavin Shan <gshan@redhat.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/3] cacheinfo: Correctly fallback to using clidr_el1's information Date: Mon, 27 Mar 2023 13:59:48 +0200 [thread overview] Message-ID: <20230327115953.788244-1-pierre.gondois@arm.com> (raw) The cache information can be extracted from either a Device Tree (DT), the PPTT ACPI table, or arch registers (clidr_el1 for arm64). When the DT is used but no cache properties are advertised, the current code doesn't correctly fallback to using arch information. Correct this. Also use the assumption that L1 data/instruction caches are private and L2/higher caches are shared when the cache information is coming form clidr_el1. Pierre Gondois (3): cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Check cache properties are present in DT cacheinfo: Add use_arch[|_cache]_info field/function arch/arm64/kernel/cacheinfo.c | 5 ++++ drivers/base/cacheinfo.c | 53 ++++++++++++++++++++++++++++++++--- include/linux/cacheinfo.h | 2 ++ 3 files changed, 56 insertions(+), 4 deletions(-) -- 2.25.1
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From: Pierre Gondois <pierre.gondois@arm.com> To: linux-kernel@vger.kernel.org Cc: Radu Rendec <rrendec@redhat.com>, Pierre Gondois <pierre.gondois@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, "Rafael J. Wysocki" <rafael@kernel.org>, Sudeep Holla <sudeep.holla@arm.com>, Jeremy Linton <jeremy.linton@arm.com>, Akihiko Odaki <akihiko.odaki@daynix.com>, Palmer Dabbelt <palmer@rivosinc.com>, Gavin Shan <gshan@redhat.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 0/3] cacheinfo: Correctly fallback to using clidr_el1's information Date: Mon, 27 Mar 2023 13:59:48 +0200 [thread overview] Message-ID: <20230327115953.788244-1-pierre.gondois@arm.com> (raw) The cache information can be extracted from either a Device Tree (DT), the PPTT ACPI table, or arch registers (clidr_el1 for arm64). When the DT is used but no cache properties are advertised, the current code doesn't correctly fallback to using arch information. Correct this. Also use the assumption that L1 data/instruction caches are private and L2/higher caches are shared when the cache information is coming form clidr_el1. Pierre Gondois (3): cacheinfo: Check sib_leaf in cache_leaves_are_shared() cacheinfo: Check cache properties are present in DT cacheinfo: Add use_arch[|_cache]_info field/function arch/arm64/kernel/cacheinfo.c | 5 ++++ drivers/base/cacheinfo.c | 53 ++++++++++++++++++++++++++++++++--- include/linux/cacheinfo.h | 2 ++ 3 files changed, 56 insertions(+), 4 deletions(-) -- 2.25.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2023-03-27 12:00 UTC|newest] Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-27 11:59 Pierre Gondois [this message] 2023-03-27 11:59 ` [PATCH 0/3] cacheinfo: Correctly fallback to using clidr_el1's information Pierre Gondois 2023-03-27 11:59 ` [PATCH 1/3] cacheinfo: Check sib_leaf in cache_leaves_are_shared() Pierre Gondois 2023-03-27 11:59 ` Pierre Gondois 2023-03-27 14:04 ` Conor Dooley 2023-03-27 14:04 ` Conor Dooley 2023-03-27 11:59 ` [PATCH 2/3] cacheinfo: Check cache properties are present in DT Pierre Gondois 2023-03-27 11:59 ` Pierre Gondois 2023-03-27 14:13 ` Conor Dooley 2023-03-27 14:13 ` Conor Dooley 2023-04-04 19:29 ` Conor Dooley 2023-04-04 19:29 ` Conor Dooley 2023-04-06 7:31 ` Pierre Gondois 2023-04-06 7:31 ` Pierre Gondois 2023-03-27 11:59 ` [PATCH 3/3] cacheinfo: Add use_arch[|_cache]_info field/function Pierre Gondois 2023-03-27 11:59 ` Pierre Gondois 2023-03-27 12:17 ` Will Deacon 2023-03-27 12:17 ` Will Deacon 2023-04-06 7:28 ` Pierre Gondois 2023-04-06 7:28 ` Pierre Gondois
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