Messages in this thread Patch in this message | | | From | Xu Lu <> | Subject | [RFC PATCH V1 09/11] riscv: Adjust fix_btmap slots number to match variable page size | Date | Thu, 23 Nov 2023 14:57:06 +0800 |
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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(-)
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, -- 2.20.1
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