From: Krzysztof Kozlowski <krzk@kernel.org> To: Alexandru Elisei <alexandru.elisei@arm.com>, catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH RFC v3 19/35] arm64: mte: Discover tag storage memory Date: Fri, 26 Jan 2024 09:50:58 +0100 [thread overview] Message-ID: <5b8ce251-0790-4e2c-b5b1-0d2aeacbdd92@kernel.org> (raw) In-Reply-To: <20240125164256.4147-20-alexandru.elisei@arm.com> On 25/01/2024 17:42, Alexandru Elisei wrote: > Allow the kernel to get the base address, size, block size and associated > memory node for tag storage from the device tree blob. > Please use scripts/get_maintainers.pl to get a list of necessary people and lists to CC. It might happen, that command when run on an older kernel, gives you outdated entries. Therefore please be sure you base your patches on recent Linux kernel. Tools like b4 or scripts_getmaintainer.pl provide you proper list of people, so fix your workflow. Tools might also fail if you work on some ancient tree (don't, use mainline), work on fork of kernel (don't, use mainline) or you ignore some maintainers (really don't). Just use b4 and all the problems go away. You missed at least devicetree list (maybe more), so this won't be tested by automated tooling. Performing review on untested code might be a waste of time, thus I will skip this patch entirely till you follow the process allowing the patch to be tested. Please kindly resend and include all necessary To/Cc entries. > A tag storage region represents the smallest contiguous memory region that > holds all the tags for the associated contiguous memory region which can be > tagged. For example, for a 32GB contiguous tagged memory the corresponding > tag storage region is exactly 1GB of contiguous memory, not two adjacent > 512M of tag storage memory, nor one 2GB tag storage region. > > Tag storage is described as reserved memory; future patches will teach the > kernel how to make use of it for data (non-tagged) allocations. > > Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> > --- > > Changes since rfc v2: > > * Reworked from rfc v2 patch #11 ("arm64: mte: Reserve tag storage memory"). > * Added device tree schema (Rob Herring) > * Tag storage memory is now described in the "reserved-memory" node (Rob > Herring). > > .../reserved-memory/arm,mte-tag-storage.yaml | 78 +++++++++ Please run scripts/checkpatch.pl and fix reported warnings. Some warnings can be ignored, but the code here looks like it needs a fix. Feel free to get in touch if the warning is not clear. Best regards, Krzysztof
WARNING: multiple messages have this Message-ID (diff)
From: Krzysztof Kozlowski <krzk@kernel.org> To: Alexandru Elisei <alexandru.elisei@arm.com>, catalin.marinas@arm.com, will@kernel.org, oliver.upton@linux.dev, maz@kernel.org, james.morse@arm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, arnd@arndb.de, akpm@linux-foundation.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, mhiramat@kernel.org, rppt@kernel.org, hughd@google.com Cc: pcc@google.com, steven.price@arm.com, anshuman.khandual@arm.com, vincenzo.frascino@arm.com, david@redhat.com, eugenis@google.com, kcc@google.com, hyesoo.yu@samsung.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org Subject: Re: [PATCH RFC v3 19/35] arm64: mte: Discover tag storage memory Date: Fri, 26 Jan 2024 09:50:58 +0100 [thread overview] Message-ID: <5b8ce251-0790-4e2c-b5b1-0d2aeacbdd92@kernel.org> (raw) In-Reply-To: <20240125164256.4147-20-alexandru.elisei@arm.com> On 25/01/2024 17:42, Alexandru Elisei wrote: > Allow the kernel to get the base address, size, block size and associated > memory node for tag storage from the device tree blob. > Please use scripts/get_maintainers.pl to get a list of necessary people and lists to CC. It might happen, that command when run on an older kernel, gives you outdated entries. Therefore please be sure you base your patches on recent Linux kernel. Tools like b4 or scripts_getmaintainer.pl provide you proper list of people, so fix your workflow. Tools might also fail if you work on some ancient tree (don't, use mainline), work on fork of kernel (don't, use mainline) or you ignore some maintainers (really don't). Just use b4 and all the problems go away. You missed at least devicetree list (maybe more), so this won't be tested by automated tooling. Performing review on untested code might be a waste of time, thus I will skip this patch entirely till you follow the process allowing the patch to be tested. Please kindly resend and include all necessary To/Cc entries. > A tag storage region represents the smallest contiguous memory region that > holds all the tags for the associated contiguous memory region which can be > tagged. For example, for a 32GB contiguous tagged memory the corresponding > tag storage region is exactly 1GB of contiguous memory, not two adjacent > 512M of tag storage memory, nor one 2GB tag storage region. > > Tag storage is described as reserved memory; future patches will teach the > kernel how to make use of it for data (non-tagged) allocations. > > Signed-off-by: Alexandru Elisei <alexandru.elisei@arm.com> > --- > > Changes since rfc v2: > > * Reworked from rfc v2 patch #11 ("arm64: mte: Reserve tag storage memory"). > * Added device tree schema (Rob Herring) > * Tag storage memory is now described in the "reserved-memory" node (Rob > Herring). > > .../reserved-memory/arm,mte-tag-storage.yaml | 78 +++++++++ Please run scripts/checkpatch.pl and fix reported warnings. Some warnings can be ignored, but the code here looks like it needs a fix. Feel free to get in touch if the warning is not clear. Best regards, Krzysztof _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2024-01-26 8:51 UTC|newest] Thread overview: 190+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-01-25 16:42 [PATCH RFC v3 00/35] Add support for arm64 MTE dynamic tag storage reuse Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 01/35] mm: page_alloc: Add gfp_flags parameter to arch_alloc_page() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 5:48 ` Anshuman Khandual 2024-01-29 5:48 ` Anshuman Khandual 2024-01-29 11:41 ` Alexandru Elisei 2024-01-29 11:41 ` Alexandru Elisei 2024-01-30 4:26 ` Anshuman Khandual 2024-01-30 4:26 ` Anshuman Khandual 2024-01-30 11:56 ` Alexandru Elisei 2024-01-30 11:56 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 02/35] mm: page_alloc: Add an arch hook early in free_pages_prepare() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 8:19 ` Anshuman Khandual 2024-01-29 8:19 ` Anshuman Khandual 2024-01-29 11:42 ` Alexandru Elisei 2024-01-29 11:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 03/35] mm: page_alloc: Add an arch hook to filter MIGRATE_CMA allocations Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 8:44 ` Anshuman Khandual 2024-01-29 8:44 ` Anshuman Khandual 2024-01-29 11:45 ` Alexandru Elisei 2024-01-29 11:45 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 04/35] mm: page_alloc: Partially revert "mm: page_alloc: remove stale CMA guard code" Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:01 ` Anshuman Khandual 2024-01-29 9:01 ` Anshuman Khandual 2024-01-29 11:46 ` Alexandru Elisei 2024-01-29 11:46 ` Alexandru Elisei 2024-01-30 4:34 ` Anshuman Khandual 2024-01-30 4:34 ` Anshuman Khandual 2024-01-30 11:57 ` Alexandru Elisei 2024-01-30 11:57 ` Alexandru Elisei 2024-01-31 3:27 ` Anshuman Khandual 2024-01-31 3:27 ` Anshuman Khandual 2024-01-25 16:42 ` [PATCH RFC v3 05/35] mm: cma: Don't append newline when generating CMA area name Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:13 ` Anshuman Khandual 2024-01-29 9:13 ` Anshuman Khandual 2024-01-29 11:46 ` Alexandru Elisei 2024-01-29 11:46 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 06/35] mm: cma: Make CMA_ALLOC_SUCCESS/FAIL count the number of pages Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:24 ` Anshuman Khandual 2024-01-29 9:24 ` Anshuman Khandual 2024-01-29 11:51 ` Alexandru Elisei 2024-01-29 11:51 ` Alexandru Elisei 2024-01-30 4:52 ` Anshuman Khandual 2024-01-30 4:52 ` Anshuman Khandual 2024-01-30 11:58 ` Alexandru Elisei 2024-01-30 11:58 ` Alexandru Elisei 2024-01-31 4:40 ` Anshuman Khandual 2024-01-31 4:40 ` Anshuman Khandual 2024-01-31 13:27 ` Alexandru Elisei 2024-01-31 13:27 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 07/35] mm: cma: Add CMA_RELEASE_{SUCCESS,FAIL} events Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-29 9:31 ` Anshuman Khandual 2024-01-29 9:31 ` Anshuman Khandual 2024-01-29 11:53 ` Alexandru Elisei 2024-01-29 11:53 ` Alexandru Elisei 2024-01-31 5:59 ` Anshuman Khandual 2024-01-31 5:59 ` Anshuman Khandual 2024-01-25 16:42 ` [PATCH RFC v3 08/35] mm: cma: Introduce cma_alloc_range() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 5:20 ` Anshuman Khandual 2024-01-30 5:20 ` Anshuman Khandual 2024-01-30 11:35 ` Alexandru Elisei 2024-01-30 11:35 ` Alexandru Elisei 2024-01-31 6:24 ` Anshuman Khandual 2024-01-31 6:24 ` Anshuman Khandual 2024-01-31 14:18 ` Alexandru Elisei 2024-01-31 14:18 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 09/35] mm: cma: Introduce cma_remove_mem() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 5:50 ` Anshuman Khandual 2024-01-30 5:50 ` Anshuman Khandual 2024-01-30 11:33 ` Alexandru Elisei 2024-01-30 11:33 ` Alexandru Elisei 2024-01-31 13:19 ` Anshuman Khandual 2024-01-31 13:19 ` Anshuman Khandual 2024-01-31 13:48 ` Alexandru Elisei 2024-01-31 13:48 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 10/35] mm: cma: Fast track allocating memory when the pages are free Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 9:18 ` Anshuman Khandual 2024-01-30 9:18 ` Anshuman Khandual 2024-01-30 11:34 ` Alexandru Elisei 2024-01-30 11:34 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 11/35] mm: Allow an arch to hook into folio allocation when VMA is known Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-26 20:00 ` Peter Collingbourne 2024-01-26 20:00 ` Peter Collingbourne 2024-01-29 11:59 ` Alexandru Elisei 2024-01-29 11:59 ` Alexandru Elisei 2024-01-30 9:55 ` Anshuman Khandual 2024-01-30 9:55 ` Anshuman Khandual 2024-01-30 11:34 ` Alexandru Elisei 2024-01-30 11:34 ` Alexandru Elisei 2024-01-31 6:53 ` Anshuman Khandual 2024-01-31 6:53 ` Anshuman Khandual 2024-01-31 12:22 ` Alexandru Elisei 2024-01-31 12:22 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 12/35] mm: Call arch_swap_prepare_to_restore() before arch_swap_restore() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 3:30 ` Anshuman Khandual 2024-02-01 3:30 ` Anshuman Khandual 2024-02-01 17:32 ` Alexandru Elisei 2024-02-01 17:32 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 13/35] mm: memory: Introduce fault-on-access mechanism for pages Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 5:52 ` Anshuman Khandual 2024-02-01 5:52 ` Anshuman Khandual 2024-02-01 17:36 ` Alexandru Elisei 2024-02-01 17:36 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 14/35] of: fdt: Return the region size in of_flat_dt_translate_address() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 15/35] of: fdt: Add of_flat_read_u32() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 16/35] KVM: arm64: Don't deny VM_PFNMAP VMAs when kvm_has_mte() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 17/35] arm64: mte: Rework naming for tag manipulation functions Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 18/35] arm64: mte: Rename __GFP_ZEROTAGS to __GFP_TAGGED Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 19/35] arm64: mte: Discover tag storage memory Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-26 8:50 ` Krzysztof Kozlowski [this message] 2024-01-26 8:50 ` Krzysztof Kozlowski 2024-01-26 17:01 ` Alexandru Elisei 2024-01-26 17:01 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 20/35] arm64: mte: Add tag storage memory to CMA Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 21/35] arm64: mte: Disable dynamic tag storage management if HW KASAN is enabled Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 22/35] arm64: mte: Enable tag storage if CMA areas have been activated Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-02 22:30 ` Evgenii Stepanov 2024-02-02 22:30 ` Evgenii Stepanov 2024-02-05 16:30 ` Alexandru Elisei 2024-02-05 16:30 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 23/35] arm64: mte: Try to reserve tag storage in arch_alloc_page() Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-30 0:04 ` Peter Collingbourne 2024-01-30 0:04 ` Peter Collingbourne 2024-01-30 11:38 ` Alexandru Elisei 2024-01-30 11:38 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 24/35] arm64: mte: Perform CMOs for tag blocks Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 25/35] arm64: mte: Reserve tag block for the zero page Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 26/35] arm64: mte: Use fault-on-access to reserve missing tag storage Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 27/35] arm64: mte: Handle tag storage pages mapped in an MTE VMA Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 28/35] arm64: mte: swap: Handle tag restoring when missing tag storage Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-02 4:02 ` Peter Collingbourne 2024-02-02 4:02 ` Peter Collingbourne 2024-02-02 14:56 ` Alexandru Elisei 2024-02-02 14:56 ` Alexandru Elisei 2024-02-03 1:32 ` Evgenii Stepanov 2024-02-03 1:32 ` Evgenii Stepanov 2024-02-03 1:52 ` Peter Collingbourne 2024-02-03 1:52 ` Peter Collingbourne 2024-01-25 16:42 ` [PATCH RFC v3 29/35] arm64: mte: copypage: " Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 30/35] arm64: mte: ptrace: Handle pages with " Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 9:21 ` Anshuman Khandual 2024-02-01 9:21 ` Anshuman Khandual 2024-02-01 17:38 ` Alexandru Elisei 2024-02-01 17:38 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 31/35] khugepaged: arm64: Don't collapse MTE enabled VMAs Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-02-01 8:12 ` Anshuman Khandual 2024-02-01 8:12 ` Anshuman Khandual 2024-02-01 17:38 ` Alexandru Elisei 2024-02-01 17:38 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 32/35] KVM: arm64: mte: Reserve tag storage for virtual machines with MTE Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 33/35] KVM: arm64: mte: Introduce VM_MTE_KVM VMA flag Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 34/35] arm64: mte: Enable dynamic tag storage management Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 16:42 ` [PATCH RFC v3 35/35] HACK! arm64: dts: Add fake tag storage to fvp-base-revc.dts Alexandru Elisei 2024-01-25 16:42 ` Alexandru Elisei 2024-01-25 17:01 ` [PATCH RFC v3 00/35] Add support for arm64 MTE dynamic tag storage reuse Steven Rostedt 2024-01-25 17:01 ` Steven Rostedt
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