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SubjectRe: [PATCH 2/2] arm64: remove unneed defer_reserve_crashkernel() and crash_mem_map
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On 2022/8/28 8:55, Baoquan He wrote:
> Now they are not needed any more, clean them up.

Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>

>
> Signed-off-by: Baoquan He <bhe@redhat.com>
> ---
> 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);
>

--
Regards,
Zhen Lei

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