opensbi.git/include/sbi/sbi_domain.h, branch master

include: sbi: Fix illegal shift in sbi_domain.h

2026-03-09T06:41:24Z

In sbi_domain.h, when checking if a memory region is a subset of another, an undefined behavior arithmetic operation was caught when sanitizing with UBSan (shift exponent __riscv_xlen). This patch adds a check to handle the case where the region order is __riscv_xlen, avoiding the illegal shift and ensuring the operation remains defined. Please let me know if there’s any other most suitable solution for this bug. Signed-off-by: Marcos Oduardo Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20260222235219.276432-1-marcos.oduardo@gmail.com Signed-off-by: Anup Patel

lib: sbi_domain: make is_region_subset public

2025-12-21T15:03:20Z

The helper function is renamed as sbi_domain_memregion_is_subset, and made public in header file. Also add a convenient helper of sbi_domain_for_each_memregion_idx. Signed-off-by: Bo Gan Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251218104243.562667-4-ganboing@gmail.com Signed-off-by: Anup Patel

lib: sbi_domain: add sbi_domain_get_oldpmp_flags

2025-12-21T15:03:18Z

Factor out logic in `sbi_hart_oldpmp_configure` into function `sbi_domain_get_oldpmp_flags`, analogous to `sbi_domain_get_smepmp_flags`. Platform specific hart-protection implementation can now leverage it. Signed-off-by: Bo Gan Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251218104243.562667-3-ganboing@gmail.com Signed-off-by: Anup Patel

lib: sbi_domain: ensure consistent firmware PMP entries

2025-11-02T11:05:19Z

During domain context switches, all PMP entries are reconfigured which can clear firmware access permissions, causing M-mode access faults under SmePMP. Sort domain regions to place firmware regions first, ensuring consistent firmware PMP entries so they won't be revoked during domain context switches. Signed-off-by: Yu-Chien Peter Lin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251008084444.3525615-7-peter.lin@sifive.com Signed-off-by: Anup Patel

lib: sbi_domain: add SBI_DOMAIN_MEMREGION_FW memregion flag

2025-11-02T10:56:19Z

Add a new memregion flag, SBI_DOMAIN_MEMREGION_FW and mark the OpenSBI code and data regions. Signed-off-by: Yu-Chien Peter Lin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251008084444.3525615-6-peter.lin@sifive.com Signed-off-by: Anup Patel

lib: sbi_hart: move sbi_hart_get_smepmp_flags() to sbi_domain

2025-11-02T10:25:57Z

Move sbi_hart_get_smepmp_flags() from sbi_hart.c to sbi_domain.c and rename it to sbi_domain_get_smepmp_flags() to better reflect its purpose of converting domain memory region flags to PMP configuration. Also removes unused parameters (scratch and dom). Signed-off-by: Yu-Chien Peter Lin Reviewed-by: Anup Patel Link: https://lore.kernel.org/r/20251008084444.3525615-2-peter.lin@sifive.com Signed-off-by: Anup Patel

lib: sbi: Fix non-root domain startup

2025-02-19T11:41:39Z

Currently, the sbi_sse_init() in cold boot path is called after sbi_domain_finalize() so boot HART of non-root domains will start before SSE cold boot init which can cause warm boot of such HARTs to crash in sbi_sse_init(). To address the above issue, factor-out the non-root domain startup from sbi_domain_finalize() function as a separate sbi_domain_startup() function which can be called after sbi_sse_init() in cold boot path. Fixes: 93f7d819fdeb ("lib: sbi: sse: allow adding new events") Signed-off-by: Anup Patel

lib: sbi_domain: Use domain data support for per-domain hart context

2024-10-25T17:30:10Z

The per-domain hartindex_to_context_table[] is yet another per-domain data required for implementing hart entry into (or exit from) domain. Use the recently added domain data support for per-domain hart context so that a dedicated hartindex_to_context_table[] in struct sbi_domain is not needed. Signed-off-by: Anup Patel Reviewed-by: Yu Chien Peter Lin

lib: sbi: Introduce domain data

2024-10-25T17:30:07Z

Different parts of OpenSBI require their own per-domain data so introduce domain data (or sbi_domain_data) which can be registered by any part of OpenSBI. Using the domain data, the domain framework will create a data pointer for every domain which can be used to maintain some per-domain state. Signed-off-by: Anup Patel Reviewed-by: Yu Chien Peter Lin

lib: sbi_domain: Make sbi_domain_root_add_memregion() as local function

2024-10-25T17:30:00Z

The sbi_domain_root_add_memregion() is only used within sbi_domain implementation so rename and make it a local function. Signed-off-by: Anup Patel Reviewed-by: Samuel Holland