From mboxrd@z Thu Jan 1 00:00:00 1970 From: ard.biesheuvel@linaro.org (Ard Biesheuvel) Date: Wed, 30 Dec 2015 16:26:02 +0100 Subject: [PATCH v2 03/13] arm64: use more granular reservations for static page table allocations In-Reply-To: <1451489172-17420-1-git-send-email-ard.biesheuvel@linaro.org> References: <1451489172-17420-1-git-send-email-ard.biesheuvel@linaro.org> Message-ID: <1451489172-17420-4-git-send-email-ard.biesheuvel@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Before introducing new statically allocated page tables and increasing their alignment in subsequent patches, update the reservation logic so that only pages that are in actual use end up as reserved with memblock. Signed-off-by: Ard Biesheuvel --- arch/arm64/mm/init.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 6bacba847923..8e678d05ad84 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -36,6 +36,7 @@ #include #include +#include #include #include #include @@ -165,11 +166,13 @@ void __init arm64_memblock_init(void) * Register the kernel text, kernel data, initrd, and initial * pagetables with memblock. */ - memblock_reserve(__pa(_text), _end - _text); + memblock_reserve(__pa(_text), __bss_stop - _text); #ifdef CONFIG_BLK_DEV_INITRD if (initrd_start) memblock_reserve(__virt_to_phys(initrd_start), initrd_end - initrd_start); #endif + memblock_reserve(__pa(idmap_pg_dir), IDMAP_DIR_SIZE); + memblock_reserve(__pa(swapper_pg_dir), SWAPPER_DIR_SIZE); early_init_fdt_scan_reserved_mem(); -- 2.5.0