From db0732f11dc75c31f7ee146156f121bc7c8658ba Mon Sep 17 00:00:00 2001 From: Anas Nashif Date: Fri, 22 Jan 2021 07:37:42 -0500 Subject: [PATCH] Revert "kernel: add CONFIG_ARCH_HAS_RESERVED_PAGE_FRAMES" This reverts commit 9d2ebfff588bd7a8ae1120de5c5a4d01ecb245e3. Signed-off-by: Anas Nashif --- arch/Kconfig | 8 -------- kernel/include/kernel_arch_interface.h | 14 -------------- 2 files changed, 22 deletions(-) diff --git a/arch/Kconfig b/arch/Kconfig index dedc122a590..5d099b993c9 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -517,14 +517,6 @@ config CPU_HAS_MMU This hidden option is selected when the CPU has a Memory Management Unit (MMU). -config ARCH_HAS_RESERVED_PAGE_FRAMES - bool - help - This hidden configuration should be selected by the architecture if - certain RAM page frames need to be marked as reserved and never used for - memory mappings. The architecture will need to implement - arch_reserved_pages_update(). - menuconfig MMU bool "Enable MMU features" depends on CPU_HAS_MMU diff --git a/kernel/include/kernel_arch_interface.h b/kernel/include/kernel_arch_interface.h index 4e014d05619..c784852e809 100644 --- a/kernel/include/kernel_arch_interface.h +++ b/kernel/include/kernel_arch_interface.h @@ -282,20 +282,6 @@ int arch_mem_map(void *dest, uintptr_t addr, size_t size, uint32_t flags); * @param size Page-aligned region size */ void arch_mem_unmap(void *addr, size_t size); - -#ifdef CONFIG_ARCH_HAS_RESERVED_PAGE_FRAMES -/** - * Update page frame database with reserved pages - * - * Some page frames within system RAM may not be available for use. A good - * example of this is reserved regions in the first megabyte on PC-like systems. - * - * Implementations of this function should mark all relavent entries in - * z_page_frames with K_PAGE_FRAME_RESERVED. This function is called at - * early system initialization with mm_lock held. - */ -void arch_reserved_pages_update(void); -#endif /* ARCH_HAS_RESERVED_PAGE_FRAMES */ #endif /* CONFIG_MMU */ /** @} */