On 21.12.21 00:22, Samuel Thibault wrote:
Juergen Gross, le lun. 20 déc. 2021 17:07:10 +0100, a ecrit:+unsigned long e820_get_max_contig_pages(unsigned long pfn, unsigned long pages) +{ + int i; + unsigned long end; + + for ( i = 0; i < e820_entries && e820_map[i].addr < (pfn << PAGE_SHIFT);Shouldn't that be addr+size? Otherwise if pfn is in the middle of an e820 entry, we will miss picking up that.
No, we want to check all map entries starting below or at the given pfn. The test should be "e820_map[i].addr <= (pfn << PAGE_SHIFT)", of course. Juergen
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