diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2024-08-08 14:03:51 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-08-08 14:04:17 -0700 |
| commit | e47fd9beb1cec00f43077d6b6238c8d30bd03ecf (patch) | |
| tree | 504747e4a88042565ad7957260915242ff687b61 /arch/riscv/mm/init.c | |
| parent | 91d516d4de48532d967a77967834e00c8c53dfe6 (diff) | |
| parent | ee9a43b7cfe2d8a3520335fea7d8ce71b8cabd9d (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Cross-merge networking fixes after downstream PR.
No conflicts or adjacent changes.
Link: https://patch.msgid.link/20240808170148.3629934-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.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 bfa2dea95354..8b698d9609e7 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -234,8 +234,6 @@ 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. @@ -251,6 +249,16 @@ 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 @@ -266,6 +274,7 @@ 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))); @@ -1284,8 +1293,6 @@ 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, NULL); } |