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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-24 16:21:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-07-24 16:21:27 +0200 |
| commit | 8f9aa2c90530ab92301a82231ae44f3722becd93 (patch) | |
| tree | fb282e955b0a880b07131a135257fe3ec764e928 /arch/mips/mm/init.c | |
| parent | 93467b31bec6da512b51544e5e4584f2745e995e (diff) | |
| parent | 155b42bec9cbb6b8cdc47dd9bd09503a81fbe493 (diff) | |
Merge v7.1.5linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/mips/mm/init.c')
| -rw-r--r-- | arch/mips/mm/init.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index 55b25e85122a..352718e43f69 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -272,9 +272,15 @@ static int maar_res_walk(unsigned long start_pfn, unsigned long nr_pages, void *data) { struct maar_walk_info *wi = data; - struct maar_config *cfg = &wi->cfg[wi->num_cfg]; + struct maar_config *cfg; unsigned int maar_align; + /* Ensure we don't overflow the cfg array */ + if (WARN_ON(wi->num_cfg >= ARRAY_SIZE(wi->cfg))) + return -1; + + cfg = &wi->cfg[wi->num_cfg]; + /* MAAR registers hold physical addresses right shifted by 4 bits */ maar_align = BIT(MIPS_MAAR_ADDR_SHIFT + 4); @@ -283,9 +289,7 @@ static int maar_res_walk(unsigned long start_pfn, unsigned long nr_pages, cfg->upper = ALIGN_DOWN(PFN_PHYS(start_pfn + nr_pages), maar_align) - 1; cfg->attrs = MIPS_MAAR_S; - /* Ensure we don't overflow the cfg array */ - if (!WARN_ON(wi->num_cfg >= ARRAY_SIZE(wi->cfg))) - wi->num_cfg++; + wi->num_cfg++; return 0; } @@ -422,10 +426,11 @@ static inline void __init highmem_init(void) unsigned long tmp; /* - * If CPU cannot support HIGHMEM discard the memory above highstart_pfn + * If CPU cannot support HIGHMEM discard any memory above highstart_pfn */ if (cpu_has_dc_aliases) { - memblock_remove(PFN_PHYS(highstart_pfn), -1); + if (highstart_pfn) + memblock_remove(PFN_PHYS(highstart_pfn), -1); return; } |