[PATCH 2/2] arm64: remove unneed defer_reserve_crashkernel() and crash_mem_map

From: Baoquan He
Date: Sat Aug 27 2022 - 20:59:50 EST


Now they are not needed any more, clean them up.

Signed-off-by: Baoquan He <bhe@xxxxxxxxxx>
---
arch/arm64/include/asm/memory.h | 5 -----
arch/arm64/mm/mmu.c | 15 ---------------
2 files changed, 20 deletions(-)

diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 9dd08cd339c3..b9e71583c9cb 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -363,11 +363,6 @@ static inline void *phys_to_virt(phys_addr_t x)
})

void dump_mem_limit(void);
-
-static inline bool defer_reserve_crashkernel(void)
-{
- return IS_ENABLED(CONFIG_ZONE_DMA) || IS_ENABLED(CONFIG_ZONE_DMA32);
-}
#endif /* !ASSEMBLY */

/*
diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index cdd338fa2115..c3f8f426c3d8 100644
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -502,21 +502,6 @@ void __init mark_linear_text_alias_ro(void)
PAGE_KERNEL_RO);
}

-static bool crash_mem_map __initdata;
-
-static int __init enable_crash_mem_map(char *arg)
-{
- /*
- * Proper parameter parsing is done by reserve_crashkernel(). We only
- * need to know if the linear map has to avoid block mappings so that
- * the crashkernel reservations can be unmapped later.
- */
- crash_mem_map = true;
-
- return 0;
-}
-early_param("crashkernel", enable_crash_mem_map);
-
static void __init map_mem(pgd_t *pgdp)
{
static const u64 direct_map_end = _PAGE_END(VA_BITS_MIN);
--
2.34.1