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[103.229.18.19]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-819c59e826asm9831562b3a.54.2026.01.09.01.02.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Jan 2026 01:02:40 -0800 (PST) From: Himanshu Chauhan To: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-efi@vger.kernel.org, acpica-devel@lists.linux.dev, paul.walmsley@sifive.com, palmer@dabbelt.com, lenb@kernel.org, james.morse@arm.com, tony.luck@intel.com, ardb@kernel.org, conor@kernel.org, cleger@rivosinc.com, robert.moore@intel.com, sunilvl@oss.qualcomm.com, anup.patel@oss.qualcomm.com Cc: Himanshu Chauhan Subject: [PATCH v3 02/10] riscv: Define arch_apei_get_mem_attribute for RISC-V Date: Fri, 9 Jan 2026 14:32:16 +0530 Message-ID: <20260109090224.3105465-3-himanshu.chauhan@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260109090224.3105465-1-himanshu.chauhan@oss.qualcomm.com> References: <20260109090224.3105465-1-himanshu.chauhan@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: E4paPx4iNtzyIjA8JodxgiBq7YmCrnMx X-Proofpoint-ORIG-GUID: E4paPx4iNtzyIjA8JodxgiBq7YmCrnMx X-Authority-Analysis: v=2.4 cv=Uohu9uwB c=1 sm=1 tr=0 ts=6960c432 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=Ou0eQOY4+eZoSc0qltEV5Q==:17 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=I3DjZvlWSiOXn3_7CcgA:9 a=zc0IvFSfCIW2DFIPzwfm:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTA5MDA2NCBTYWx0ZWRfX3c0tc5eY04Nh +TpmKKnM9cLg81GA8BM0KhUQbT9LKpknHWLl9MCYWdQReo57ZBlWu09F6qAV8x+v0nO9eS9263v foi0JoMfkpjw13pOT594yQXwfxE7CWvj1jESSnVyF37CE5HX05tV/ZqagwG877HnVAaf5Gmj2u1 MHKqxaMCCHIvzb4x8xZk3XjvC4P+UYa/wgdTqwo5NKQNND7YeuAyhqdlOPkDhp07JDCj2X9lCdf f7yGy7Oc/douyYHbS1wbf4kuIUx4ogzINRb7HtWVXI57hokRb+GTmwP570+KyxUh2NUrZD2UFXf 5Zt2fM5kxQs8DiBRcsrUKme2NhsRxVeGBQ5ytZB2fB27gjx4K4AT0GbwMP1uukaBOpASFE7qmws dlK6ZcI5rH+TRJgQd9yGvySgbCq8/vGVFHg9fZswvDJrbv3bQ/OZi7MteO/jRlmPVuzs88v9DoJ 8L7QSFezfKDNxiUZEDQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-09_02,2026-01-08_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 lowpriorityscore=0 adultscore=0 bulkscore=0 suspectscore=0 malwarescore=0 clxscore=1015 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2512120000 definitions=main-2601090064 Content-Type: text/plain; charset="utf-8" ghes_map function uses arch_apei_get_mem_attribute to get the protection bits for a given physical address. These protection bits are then used to map the physical address. Signed-off-by: Himanshu Chauhan --- arch/riscv/include/asm/acpi.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h index 6e13695120bc..0c599452ef48 100644 --- a/arch/riscv/include/asm/acpi.h +++ b/arch/riscv/include/asm/acpi.h @@ -27,6 +27,26 @@ extern int acpi_disabled; extern int acpi_noirq; extern int acpi_pci_disabled; =20 +#ifdef CONFIG_ACPI_APEI +/* + * acpi_disable_cmcff is used in drivers/acpi/apei/hest.c for disabling + * IA-32 Architecture Corrected Machine Check (CMC) Firmware-First mode + * with a kernel command line parameter "acpi=3Dnocmcoff". But we don't + * have this IA-32 specific feature on ARM64, this definition is only + * for compatibility. + */ +#define acpi_disable_cmcff 1 +static inline pgprot_t arch_apei_get_mem_attribute(phys_addr_t addr) +{ + /* + * Until we have a way to look for EFI memory attributes. + */ + return PAGE_KERNEL; +} +#else /* CONFIG_ACPI_APEI */ +#define acpi_disable_cmcff 0 +#endif /* !CONFIG_ACPI_APEI */ + static inline void disable_acpi(void) { acpi_disabled =3D 1; --=20 2.43.0