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charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: EA0EC180005 X-Stat-Signature: wsnnepfnam7fc4wgf3tkegdizx56gmok X-HE-Tag: 1788346277-317235 X-HE-Meta: U2FsdGVkX19Gc1WXdDp/q3CjKviNQXS0EVW63hPkqJ4zgAbf16Og5uPcO8y+9N1BRf25SRy184JK77wxu7u42786bIFDW7IbeqdOopOGL7ZWZSipYEifdGLiG7DJ7cIb78F75oUGOmlctKnjUlpNM+0JAmzmctXP/xEofopHcJxAIsGwPg0Dx9FncRXDO11mE0eMNHJbDrCLCHjViyS28pf7CyYeZ8sHNvFekZtzYplDMUXFO8PJHLR9eLbOgegkm1/7ccFQwGoYx6twA8MNLM3kz6QLkpgsSafArUe8cdgFWyFzCHMc+b7oODH5EKoFWFjgMeBIjCsGkxQ0E0iQGqkqGb7XjmIdsrigpsP9lJmc3174OaMFvhjhZGEzYjSimgF8YnkW/2PhYubeFMO8Rd8oOPjx3uO4NfBum90IwTMJNOTctizyR5GfUTQ+a20La1ca6tfDqV0HYIualfvA6Ghyxi7LBYmZBwCj2KGS8AXxRV82sE6Qc0LJShAjGnxqNs61PF01K9Sm5fsQZZS3dm37fUjlwsTESzo3s1E3N6AMbQJQF1rWxAwqL+ojiXJkTlcklnh7+/26Yi8GZQtn5jmJ2uk2OHarEMlHs28twKh13vqfXrIXpb24868OlFU2dgpkK7yrdRtRw8bA6jRUuaPeCBllwgAayunz0tCjTt8SS7lpBC2+XlK23B8khM5D7O0V7IfcMzm2by8r9rFvMXYQFj6B3DZzy2NkyLwKnuH03TcUMNfIF+tJ34hpcMhh0WXhKac9/3OGpesvJ9acckn3qSpcudKsZXHWzhQC+KB2b8XaeJc36SehDPJndqc/fS/8tjl5uz6w5OXqc2BZL3VrV06KAW3sOUo8UbC8hLfzuHohxb6IKv8OlJyYHmgKqdps2mrQQ6Jrg7en2SXDL7RdOMfUl2Hu2qPiLT6gx3aARVMGMsQMbcKYafyme4NunXO+1qpkzzf2DLRYWyy CPgFEXPM 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: With the MEMBLOCK_LLMAP flag, force a last-level mapping. Signed-off-by: Vincent Donnefort diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c index 79d90226fd5d..c0fcc76914d1 100644 --- a/arch/arm64/mm/mmu.c +++ b/arch/arm64/mm/mmu.c @@ -1184,9 +1184,8 @@ static void __init map_mem(void) phys_addr_t init_begin = __pa_symbol(__init_begin); phys_addr_t init_end = __pa_symbol(__init_end); phys_addr_t kernel_end = __pa_symbol(__bss_stop); - phys_addr_t start, end; int flags = NO_EXEC_MAPPINGS; - u64 i; + struct memblock_region *r; /* * Setting hierarchical PXNTable attributes on table entries covering @@ -1226,9 +1225,13 @@ static void __init map_mem(void) flags); /* map all the memory banks */ - for_each_mem_range(i, &start, &end) { + for_each_mem_region(r) { + phys_addr_t start, end; + + if (memblock_is_nomap(r)) + continue; /* - * for_each_mem_range may return sub-page-aligned boundaries + * for_each_mem_region may return sub-page-aligned boundaries * after memblock_mark_nomap() splits regions at byte precision. * __create_pgd_mapping_locked aligns phys down to PAGE_MASK, * which could accidentally map no-map memory on the boundary. @@ -1237,17 +1240,23 @@ static void __init map_mem(void) * regions. The cost is at most one page of unmapped gap at * each boundary. */ - start = PAGE_ALIGN(start); - end = end & PAGE_MASK; + start = PAGE_ALIGN(r->base); + end = (r->base + r->size) & PAGE_MASK; if (start >= end) continue; + + int rflags = flags; + + if (memblock_is_llmap(r)) + rflags |= NO_BLOCK_MAPPINGS | NO_CONT_MAPPINGS; + /* * The linear map must allow allocation tags reading/writing * if MTE is present. Otherwise, it has the same attributes as * PAGE_KERNEL. */ __map_memblock(start, end, pgprot_tagged(PAGE_KERNEL), - flags); + rflags); } } -- 2.55.0.970.g62bdec98f9-goog