From: Catalin Marinas <catalin.marinas@arm.com>
To: Chengwen Feng <fengchengwen@huawei.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
Will Deacon <will@kernel.org>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Palmer Dabbelt <palmer@dabbelt.com>,
Borislav Petkov <bp@alien8.de>, "H . Peter Anvin" <hpa@zytor.com>,
Juergen Gross <jgross@suse.com>,
Boris Ostrovsky <boris.ostrovsky@oracle.com>,
Len Brown <lenb@kernel.org>, Sunil V L <sunilvl@ventanamicro.com>,
Mark Rutland <mark.rutland@arm.com>,
Jonathan Cameron <jonathan.cameron@huawei.com>,
Kees Cook <kees@kernel.org>, Yanteng Si <si.yanteng@linux.dev>,
Sean Christopherson <seanjc@google.com>,
Kai Huang <kai.huang@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Thomas Huth <thuth@redhat.com>,
Thorsten Blum <thorsten.blum@linux.dev>,
Kevin Loughlin <kevinloughlin@google.com>,
Zheyun Shen <szy0127@sjtu.edu.cn>,
Peter Zijlstra <peterz@infradead.org>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Xin Li <xin@zytor.com>, "Ahmed S . Darwish" <darwi@linutronix.de>,
Sohil Mehta <sohil.mehta@intel.com>,
Ilkka Koskinen <ilkka@os.amperecomputing.com>,
Robin Murphy <robin.murphy@arm.com>,
James Clark <james.clark@linaro.org>,
Besar Wicaksono <bwicaksono@nvidia.com>,
Ma Ke <make24@iscas.ac.cn>, Wei Huang <wei.huang2@amd.com>,
Andy Gospodarek <andrew.gospodarek@broadcom.com>,
Somnath Kotur <somnath.kotur@broadcom.com>,
punit.agrawal@oss.qualcomm.com, guohanjun@huawei.com,
suzuki.poulose@arm.com, ryan.roberts@arm.com,
chenl311@chinatelecom.cn, masahiroy@kernel.org,
wangyuquan1236@phytium.com.cn, anshuman.khandual@arm.com,
heinrich.schuchardt@canonical.com, Eric.VanTassell@amd.com,
wangzhou1@hisilicon.com, wanghuiqiang@huawei.com,
liuyonglong@huawei.com, linux-pci@vger.kernel.org,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev,
linux-riscv@lists.infradead.org, xen-devel@lists.xenproject.org,
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stable@vger.kernel.org
Subject: Re: [PATCH v10 0/8] ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue
Date: Tue, 31 Mar 2026 18:31:33 +0100 [thread overview]
Message-ID: <acwE9V-r63-W2wby@arm.com> (raw)
In-Reply-To: <20260320031737.35048-1-fengchengwen@huawei.com>
On Fri, Mar 20, 2026 at 11:17:29AM +0800, Chengwen Feng wrote:
> This patchset unifies ACPI Processor UID retrieval across
> arm64/loongarch/riscv/x86 via acpi_get_cpu_uid() (with input validation)
> and fixes ARM64 CPU steer-tag retrieval failure in PCI/TPH:
>
> 1-4: Add acpi_get_cpu_uid() for arm64/loongarch/riscv/x86 (update
> respective users)
> 5: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h
> 6: Clean up perf/arm_cspmu
> 7: Clean up ACPI/PPTT and remove unused get_acpi_id_for_cpu()
> 8: Pass ACPI Processor UID to Cache Locality _DSM
>
> The interface refactor ensures consistent CPU UID retrieval across
> architectures (no functional changes for valid inputs) and provides the
> unified interface required for the ARM64 TPH fix.
>
> ---
> Changes in v10:
> - Refine commit header&log according to Punit's and Bjorn's review
> - Split perf/arm_cspmu as a separate commit which address Punit's
> review
>
> Changes in v9:
> - Address Bjorn's review: split commits to each platform so that make
> them easy to review
>
> Changes in v8:
> - Moving arm64's get_cpu_for_acpi_id() to kernel/acpi.c which address
> Jeremy's review
>
> Chengwen Feng (8):
> arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
> LoongArch: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
> RISC-V: ACPI: Add acpi_get_cpu_uid() for unified ACPI CPU UID
> retrieval
> x86/acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval
> ACPI: Centralize acpi_get_cpu_uid() declaration in
> include/linux/acpi.h
> perf: arm_cspmu: Switch to acpi_get_cpu_uid() from
> get_acpi_id_for_cpu()
> ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu()
> PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM
>
> Documentation/PCI/tph.rst | 4 +--
> arch/arm64/include/asm/acpi.h | 17 +---------
> arch/arm64/kernel/acpi.c | 30 ++++++++++++++++++
For the arm64 bits:
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
prev parent reply other threads:[~2026-03-31 17:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-20 3:17 [PATCH v10 0/8] ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 1/8] arm64: acpi: Add acpi_get_cpu_uid() for unified ACPI CPU UID retrieval Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 2/8] LoongArch: " Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 3/8] RISC-V: ACPI: " Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 4/8] x86/acpi: " Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 5/8] ACPI: Centralize acpi_get_cpu_uid() declaration in include/linux/acpi.h Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 6/8] perf: arm_cspmu: Switch to acpi_get_cpu_uid() from get_acpi_id_for_cpu() Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 7/8] ACPI: PPTT: Use acpi_get_cpu_uid() and remove get_acpi_id_for_cpu() Chengwen Feng
2026-03-20 3:17 ` [PATCH v10 8/8] PCI/TPH: Pass ACPI Processor UID to Cache Locality _DSM Chengwen Feng
2026-03-31 12:24 ` [PATCH v10 0/8] ACPI: Unify CPU UID interface and fix ARM64 TPH steer-tag issue Rafael J. Wysocki
2026-04-01 8:22 ` fengchengwen
2026-03-31 17:31 ` Catalin Marinas [this message]
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