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[61.220.100.83]) by smtp.gmail.com with ESMTPSA id p5sm19215693pfn.154.2019.03.13.20.20.58 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 13 Mar 2019 20:21:00 -0700 (PDT) From: pierre Kuo To: steven.price@arm.com, catalin.marinas@arm.com, will.deacon@arm.com Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, vichy.kuo@gmail.com Subject: [PATCH v2 1/1] initrd: move initrd_start calculate within linear mapping range check Date: Thu, 14 Mar 2019 11:20:47 +0800 Message-Id: <20190314032047.15790-1-vichy.kuo@gmail.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org in the previous case, initrd_start and initrd_end can be successfully returned either (base < memblock_start_of_DRAM()) or (base + size > memblock_start_of_DRAM() + linear_region_size). That means even linear mapping range check fail for initrd_start and initrd_end, it still can get virtual address. Here we put initrd_start/initrd_end to be calculated only when linear mapping check pass. Fixes: c756c592e442 ("arm64: Utilize phys_initrd_start/phys_initrd_size") Reviewed-by: Steven Price Signed-off-by: pierre Kuo --- Changes in v2: - add Fixes tag arch/arm64/mm/init.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 7205a9085b4d..1adf418de685 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -425,6 +425,9 @@ void __init arm64_memblock_init(void) memblock_remove(base, size); /* clear MEMBLOCK_ flags */ memblock_add(base, size); memblock_reserve(base, size); + /* the generic initrd code expects virtual addresses */ + initrd_start = __phys_to_virt(phys_initrd_start); + initrd_end = initrd_start + phys_initrd_size; } } @@ -450,11 +453,6 @@ void __init arm64_memblock_init(void) * pagetables with memblock. */ memblock_reserve(__pa_symbol(_text), _end - _text); - if (IS_ENABLED(CONFIG_BLK_DEV_INITRD) && phys_initrd_size) { - /* the generic initrd code expects virtual addresses */ - initrd_start = __phys_to_virt(phys_initrd_start); - initrd_end = initrd_start + phys_initrd_size; - } early_init_fdt_scan_reserved_mem(); -- 2.17.1