| Message ID | 20231123065708.91345-10-luxu.kernel@bytedance.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | riscv: Introduce 64K base page | expand |
diff --git a/arch/riscv/include/asm/fixmap.h b/arch/riscv/include/asm/fixmap.h index 0a55099bb734..17bf31334bd5 100644 --- a/arch/riscv/include/asm/fixmap.h +++ b/arch/riscv/include/asm/fixmap.h @@ -44,7 +44,8 @@ enum fixed_addresses { * before ioremap() is functional. */ #define NR_FIX_BTMAPS (SZ_256K / PAGE_SIZE) -#define FIX_BTMAPS_SLOTS 7 +#define FIX_BTMAPS_SIZE (FIXADDR_SIZE - ((FIX_BTMAP_END + 1) << PAGE_SHIFT)) +#define FIX_BTMAPS_SLOTS (FIX_BTMAPS_SIZE / SZ_256K) #define TOTAL_FIX_BTMAPS (NR_FIX_BTMAPS * FIX_BTMAPS_SLOTS) FIX_BTMAP_END = __end_of_permanent_fixed_addresses,
The existing fixmap slot number will cause the fixmap size to exceed FIX_FDT_SIZE when base page becomes larger than 4K. This patch adjusts the slot number to make them always match. Signed-off-by: Xu Lu <luxu.kernel@bytedance.com> --- arch/riscv/include/asm/fixmap.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)