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| author | Kefeng Wang <wangkefeng.wang@huawei.com> | 2021-02-25 14:54:17 +0800 |
|---|---|---|
| committer | Palmer Dabbelt <palmerdabbelt@google.com> | 2021-03-09 18:09:46 -0800 |
| commit | f6e5aedf470bd4522732595a85688052e3cbc03f (patch) | |
| tree | e4502cd7b2f5bfe2bc845984dfe5ced1410e9962 | |
| parent | a38fd8748464831584a19438cbb3082b5a2dab15 (diff) | |
| download | linux-f6e5aedf470bd4522732595a85688052e3cbc03f.tar.bz2 | |
riscv: Add support for memtest
The riscv [rv32_]defconfig enabled CONFIG_MEMTEST,
but memtest feature is not supported in RISCV.
Add early_memtest() to support for memtest.
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 2 | ||||
| -rw-r--r-- | arch/riscv/mm/init.c | 6 |
2 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 04545725f187..20447b531630 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2794,7 +2794,7 @@ seconds. Use this parameter to check at some other rate. 0 disables periodic checking. - memtest= [KNL,X86,ARM,PPC] Enable memtest + memtest= [KNL,X86,ARM,PPC,RISCV] Enable memtest Format: <integer> default : 0 <disable> Specifies the number of memtest passes to be diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 067583ab1bd7..7f5036fbee8c 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -128,8 +128,9 @@ void __init setup_bootmem(void) if (max_mapped_addr == (dram_end - 1)) memblock_set_current_limit(max_mapped_addr - 4096); - max_pfn = PFN_DOWN(dram_end); - max_low_pfn = max_pfn; + min_low_pfn = PFN_UP(memblock_start_of_DRAM()); + max_low_pfn = max_pfn = PFN_DOWN(dram_end); + dma32_phys_limit = min(4UL * SZ_1G, (unsigned long)PFN_PHYS(max_low_pfn)); set_max_mapnr(max_low_pfn - ARCH_PFN_OFFSET); @@ -593,6 +594,7 @@ void __init paging_init(void) void __init misc_mem_init(void) { + early_memtest(min_low_pfn << PAGE_SHIFT, max_low_pfn << PAGE_SHIFT); arch_numa_init(); sparse_init(); zone_sizes_init(); |