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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-13 05:04:54 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-08-13 05:04:54 +0000 |
| commit | 1be3dd63ab5702f33c8cfcab726655e092d45358 (patch) | |
| tree | 180b6c6e5339f3bf576e0e315951497978294b06 /arch/riscv/mm/init.c | |
| parent | Releasing progress-linux version 6.10.3-1~progress7.99u1. (diff) | |
| download | linux-1be3dd63ab5702f33c8cfcab726655e092d45358.tar.xz linux-1be3dd63ab5702f33c8cfcab726655e092d45358.zip | |
Merging upstream version 6.10.4.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'arch/riscv/mm/init.c')
| -rw-r--r-- | arch/riscv/mm/init.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index e3405e4b99..7e25606f85 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -233,8 +233,6 @@ static void __init setup_bootmem(void) */ memblock_reserve(vmlinux_start, vmlinux_end - vmlinux_start); - phys_ram_end = memblock_end_of_DRAM(); - /* * Make sure we align the start of the memory on a PMD boundary so that * at worst, we map the linear mapping with PMD mappings. @@ -250,6 +248,16 @@ static void __init setup_bootmem(void) kernel_map.va_pa_offset = PAGE_OFFSET - phys_ram_base; /* + * The size of the linear page mapping may restrict the amount of + * usable RAM. + */ + if (IS_ENABLED(CONFIG_64BIT)) { + max_mapped_addr = __pa(PAGE_OFFSET) + KERN_VIRT_SIZE; + memblock_cap_memory_range(phys_ram_base, + max_mapped_addr - phys_ram_base); + } + + /* * Reserve physical address space that would be mapped to virtual * addresses greater than (void *)(-PAGE_SIZE) because: * - This memory would overlap with ERR_PTR @@ -265,6 +273,7 @@ static void __init setup_bootmem(void) memblock_reserve(max_mapped_addr, (phys_addr_t)-max_mapped_addr); } + phys_ram_end = memblock_end_of_DRAM(); min_low_pfn = PFN_UP(phys_ram_base); max_low_pfn = max_pfn = PFN_DOWN(phys_ram_end); high_memory = (void *)(__va(PFN_PHYS(max_low_pfn))); @@ -1289,8 +1298,6 @@ static void __init create_linear_mapping_page_table(void) if (start <= __pa(PAGE_OFFSET) && __pa(PAGE_OFFSET) < end) start = __pa(PAGE_OFFSET); - if (end >= __pa(PAGE_OFFSET) + memory_limit) - end = __pa(PAGE_OFFSET) + memory_limit; create_linear_mapping_range(start, end, 0); } |