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Wysocki" , Len Brown , Tony Luck , Borislav Petkov , Thomas Gleixner , Peter Zijlstra , Robin Murphy Cc: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, zhuo.song@linux.alibaba.com, oliver.yang@linux.alibaba.com References: <20260602071540.3711528-1-tianruidong@linux.alibaba.com> <20260602071540.3711528-3-tianruidong@linux.alibaba.com> Content-Language: en-US From: Umang Chheda In-Reply-To: <20260602071540.3711528-3-tianruidong@linux.alibaba.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIzMDAzOSBTYWx0ZWRfX2PGRTlvr2J9R q3ez9FXrI0nEnk04ynSxxaU2HUKAHLkXSTyiHsb1OoOr8Ol3us2ZMKxpOwoRrOMtuCnuiuaFeTu aqtT6MK1wLw9+rxGckD/buDv+vbg2WY= X-Proofpoint-GUID: QgWIi9b7t06qvpScgyfk2DyZHUSVRe_I X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIzMDAzOSBTYWx0ZWRfX/+pzyDb4vMXw 8erFA4HHQSKVRHvJLY+OAtjrkp5l9DHDhbSm1uIkng+Jd22dvytvFczo8qLUaPKbbqaOxZpyCc+ FFBJaGuASApDDtLI8Vl6/Cw8mLVdDoYKf8cKEhjNoFENDcZKon0pZ1vQfKWjWBXRrJvncjdUXk0 Rx9TRRWzRuyiEqvzGLknKuHi/j5DVrF5R+BUEQErUpwxNsWOipP58Z/mI1YK3S3bC8t0ToiumRL HkioeiyEOe90BCHKHYkFoizBOmZ5Am4zvbps1oGEbwLzq2bDNJeKe+N7P6VlmT1aPhwQ8ovilj8 KK6HOIds9dcGF5/F5HInx0/yNfTwXvv/h+EdlfWzQr0HZSrRWlvTZsC+4sDPrwkg43jrBH/i6N9 XjTiWwJnePrkYJv46gl/WvhjJGbWe9Y6+kmufKzFwOHUEo/wxxi0ZFtKhDduaMo9Jksx3gP/XBG 2P0jyYkniOcGmZunH2A== X-Proofpoint-ORIG-GUID: QgWIi9b7t06qvpScgyfk2DyZHUSVRe_I X-Authority-Analysis: v=2.4 cv=BdBNQbt2 c=1 sm=1 tr=0 ts=6adb3012 cx=c_pps a=cFYjgdjTJScbgFmBucgdfQ==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=EUspDBNiAAAA:8 a=SRrdq9N9AAAA:8 a=49fVXzMj59YXLoLGRmgA:9 a=QEXdDO2ut3YA:10 a=scEy_gLbYbu1JhEsrz4S:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-23_02,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 priorityscore=1501 malwarescore=0 phishscore=0 impostorscore=0 lowpriorityscore=0 suspectscore=0 adultscore=0 bulkscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610230039 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261023_025947_632304_753B9410 X-CRM114-Status: GOOD ( 20.96 ) X-Spam-Score: -2.8 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-17.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hello Ruidong, On 6/2/2026 12:45 PM, Ruidong Tian wrote: > Introduce the back-end platform driver that binds to the devices > created by the AEST front-end. Driver input is taken exclusively from > fwnode properties, so the same probe path serves any future front-end > (DT, hand-rolled) without conditional code. > > The probe builds two layers of state: > > - struct ras_node: one AEST error source > - struct ras_record: one error record inside a node > > This split mirrors the hardware: a node owns the shared MMIO/ERRGSR > window and policy, while records are the unit at which errors are > reported, masked and polled. Later patches plug interrupts, decoding, > storm mitigation and userspace ABI onto these two objects without > touching the front-end. > > Signed-off-by: Umang Chheda > Signed-off-by: Ruidong Tian > --- [...] > +# SPDX-License-Identifier: GPL-2.0-only > + > +obj-$(CONFIG_ARM64_RAS_DRIVER) += arm64_ras.o > + > +arm64_ras-y := ras-core.o > diff --git a/drivers/ras/arm64/ras-core.c b/drivers/ras/arm64/ras-core.c > new file mode 100644 > index 000000000000..b5448f4a841f > --- /dev/null > +++ b/drivers/ras/arm64/ras-core.c > @@ -0,0 +1,266 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * ARM Error Source Table Support > + * > + * Copyright (c) 2025, Alibaba Group. > + */ > + > +#include > +#include > +#include > + > +#include "ras.h" > + > +#undef pr_fmt > +#define pr_fmt(fmt) "arm64_ras: " fmt > + > +static const char *const ras_node_name[] = { > + [ACPI_AEST_PROCESSOR_ERROR_NODE] = "processor", > + [ACPI_AEST_MEMORY_ERROR_NODE] = "memory", > + [ACPI_AEST_SMMU_ERROR_NODE] = "smmu", > + [ACPI_AEST_VENDOR_ERROR_NODE] = "vendor", > + [ACPI_AEST_GIC_ERROR_NODE] = "gic", > + [ACPI_AEST_PCIE_ERROR_NODE] = "pcie", > + [ACPI_AEST_PROXY_ERROR_NODE] = "proxy", > +}; Now that the ARM RAS core framework is shared by both ACPI and DT platforms, should we consider dropping the "ACPI_AEST" naming in the common code and replacing it with a more generic prefix maybe something like "ARM_RAS" ? [...] > + > +const struct ras_group ras_group_config[] = { > + [ACPI_AEST_NODE_GROUP_FORMAT_4K] = { > + .errgsr_num = ERXGROUP_4K_ERRGSR_NUM, > + .size = ERXGROUP_4K_SIZE, > + .errgsr_offset = ERXGROUP_4K_OFFSET, > + }, > + [ACPI_AEST_NODE_GROUP_FORMAT_16K] = { > + .errgsr_num = ERXGROUP_16K_ERRGSR_NUM, > + .size = ERXGROUP_16K_SIZE, > + .errgsr_offset = ERXGROUP_16K_OFFSET, > + }, > + [ACPI_AEST_NODE_GROUP_FORMAT_64K] = { > + .errgsr_num = ERXGROUP_64K_ERRGSR_NUM, > + .size = ERXGROUP_64K_SIZE, > + .errgsr_offset = ERXGROUP_64K_OFFSET, > + }, > +}; > + Thanks, Umang