[09/12] mips: Perform early low memory test

Message ID	20190423224748.3765-10-fancer.lancer@gmail.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <linux-mips-owner@kernel.org> From: Serge Semin <fancer.lancer@gmail.com> To: Ralf Baechle <ralf@linux-mips.org>, Paul Burton <paul.burton@mips.com>, James Hogan <jhogan@kernel.org>, Matt Redfearn <matt.redfearn@mips.com>, Mike Rapoport <rppt@linux.ibm.com>, Andrew Morton <akpm@linux-foundation.org>, Michal Hocko <mhocko@suse.com>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Thomas Bogendoerfer <tbogendoerfer@suse.de>, Huacai Chen <chenhc@lemote.com>, Stefan Agner <stefan@agner.ch>, Stephen Rothwell <sfr@canb.auug.org.au>, Alexandre Belloni <alexandre.belloni@bootlin.com>, Juergen Gross <jgross@suse.com> Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, Serge Semin <fancer.lancer@gmail.com> Subject: [PATCH 09/12] mips: Perform early low memory test Date: Wed, 24 Apr 2019 01:47:45 +0300 Message-Id: <20190423224748.3765-10-fancer.lancer@gmail.com> In-Reply-To: <20190423224748.3765-1-fancer.lancer@gmail.com> References: <20190423224748.3765-1-fancer.lancer@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-mips-owner@vger.kernel.org Precedence: bulk
Series	mips: Post-bootmem-memblock transition fixes \| expand [00/12] mips: Post-bootmem-memblock transition fixes [01/12] mips: Make sure kernel .bss exists in boot mem pool [02/12] mips: Discard rudiments from bootmem_init [03/12] mips: Combine memblock init and memory reservation loops [04/12] mips: Reserve memory for the kernel image resources [05/12] mips: Discard post-CMA-init foreach loop [06/12] mips: Use memblock to reserve the __nosave memory range [07/12] mips: Add reserve-nomap memory type support [08/12] mips: Dump memblock regions for debugging [09/12] mips: Perform early low memory test [10/12] mips: Print the kernel virtual mem layout on debugging [11/12] mips: Make sure dt memory regions are valid [12/12] mips: Enable OF_RESERVED_MEM config

Message ID

20190423224748.3765-10-fancer.lancer@gmail.com (mailing list archive)

State

Superseded

Headers

From: Serge Semin <fancer.lancer@gmail.com>
To: Ralf Baechle <ralf@linux-mips.org>,
        Paul Burton <paul.burton@mips.com>,
        James Hogan <jhogan@kernel.org>,
        Matt Redfearn <matt.redfearn@mips.com>,
        Mike Rapoport <rppt@linux.ibm.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Michal Hocko <mhocko@suse.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Thomas Bogendoerfer <tbogendoerfer@suse.de>,
        Huacai Chen <chenhc@lemote.com>,
        Stefan Agner <stefan@agner.ch>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Juergen Gross <jgross@suse.com>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
        Serge Semin <fancer.lancer@gmail.com>
Subject: [PATCH 09/12] mips: Perform early low memory test
Date: Wed, 24 Apr 2019 01:47:45 +0300
Message-Id: <20190423224748.3765-10-fancer.lancer@gmail.com>
In-Reply-To: <20190423224748.3765-1-fancer.lancer@gmail.com>
References: <20190423224748.3765-1-fancer.lancer@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-mips-owner@vger.kernel.org
Precedence: bulk

Series

mips: Post-bootmem-memblock transition fixes | expand

Commit Message

Serge Semin April 23, 2019, 10:47 p.m. UTC

memblock subsystem provides a method to optionally test the passed
memory region in case if it was requested via special kernel boot
argument. Lets add the function at the bottom of the arch_mem_init()
method. Testing at this point in the boot sequence should be safe since all
critical areas are now reserved and a minimum of allocations have been
done.

Reviewed-by: Matt Redfearn <matt.redfearn@mips.com>
Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
---
 arch/mips/kernel/setup.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index ca493fdf69b0..fbd216b4e929 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -826,6 +826,8 @@  static void __init arch_mem_init(char **cmdline_p)
 		__pa_symbol(&__nosave_end) - __pa_symbol(&__nosave_begin));
 
 	memblock_dump_all();
+
+	early_memtest(PFN_PHYS(min_low_pfn), PFN_PHYS(max_low_pfn));
 }
 
 static void __init resource_init(void)

[09/12] mips: Perform early low memory test

Commit Message

Patch