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21fc7ec93f
NR_FIX_BTMAPS is the per-slot page limit for early_ioremap(). Since __early_ioremap() maps the page-aligned physical range, a 256K request can require one extra page when the physical address is not page-aligned. Reserve one extra page per slot so the 256K mapping budget is usable regardless of the initial page offset. Link: https://lore.kernel.org/r/08fd96fa-ee3a-4904-bd11-bb08bd90436f@kylinos.cn Signed-off-by: Yu Peng <pengyu@kylinos.cn> Signed-off-by: Will Deacon <will@kernel.org>
125 lines
3.5 KiB
125 lines
3.5 KiB