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From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Rob Herring <robh+dt@kernel.org>,
	Russell King <linux@armlinux.org.uk>,
	Nicolas Pitre <nico@fluxnic.net>,
	Ard Biesheuvel <ardb@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
	Nick Kossifidis <mick@ics.forth.gr>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Frank Rowand <frowand.list@gmail.com>,
	Dave Young <dyoung@redhat.com>
Cc: Baoquan He <bhe@redhat.com>, Vivek Goyal <vgoyal@redhat.com>,
	Mike Rapoport <rppt@kernel.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-mips@vger.kernel.org, linux-riscv@lists.infradead.org,
	kexec@lists.infradead.org, linux-renesas-soc@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH v5 1/9] MIPS: Avoid future duplicate elf core header reservation
Date: Wed, 11 Aug 2021 10:50:59 +0200	[thread overview]
Message-ID: <92b6718f5618d5469f67b48fbea189cca0c12f4b.1628670468.git.geert+renesas@glider.be> (raw)
In-Reply-To: <cover.1628670468.git.geert+renesas@glider.be>

Prepare for early_init_fdt_scan_reserved_mem() reserving the memory
occupied by an elf core header described in the device tree.
As arch_mem_init() calls early_init_fdt_scan_reserved_mem() before
mips_reserve_vmcore(), the latter needs to check if the memory has
already been reserved before.

Note that mips_reserve_vmcore() cannot just be removed, as not all MIPS
systems use DT.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v5:
  - New.
---
 arch/mips/kernel/setup.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c
index 23a140327a0bac1b..4693add05743d78b 100644
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -429,7 +429,8 @@ static void __init mips_reserve_vmcore(void)
 	pr_info("Reserving %ldKB of memory at %ldKB for kdump\n",
 		(unsigned long)elfcorehdr_size >> 10, (unsigned long)elfcorehdr_addr >> 10);
 
-	memblock_reserve(elfcorehdr_addr, elfcorehdr_size);
+	if (!memblock_is_region_reserved(elfcorehdr_addr, elfcorehdr_size)
+		memblock_reserve(elfcorehdr_addr, elfcorehdr_size);
 #endif
 }
 
-- 
2.25.1


  reply	other threads:[~2021-08-11  8:51 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-11  8:50 [PATCH v5 0/9] Add generic support for kdump DT properties Geert Uytterhoeven
2021-08-11  8:50 ` Geert Uytterhoeven [this message]
2021-08-11 15:35   ` [PATCH v5 1/9] MIPS: Avoid future duplicate elf core header reservation Geert Uytterhoeven
2021-08-16  5:52   ` Mike Rapoport
2021-08-23 10:17     ` Geert Uytterhoeven
2021-08-23 13:09       ` Mike Rapoport
2021-08-23 14:44         ` Rob Herring
2021-08-23 15:20           ` Mike Rapoport
2021-08-11  8:51 ` [PATCH v5 2/9] crash_dump: Make elfcorehdr address/size symbols always visible Geert Uytterhoeven
2021-08-11  8:51 ` [PATCH v5 3/9] of: fdt: Add generic support for handling elf core headers property Geert Uytterhoeven
2021-08-11  8:51 ` [PATCH v5 4/9] of: fdt: Add generic support for handling usable memory range property Geert Uytterhoeven
2021-08-11  8:51 ` [PATCH v5 5/9] of: fdt: Use IS_ENABLED(CONFIG_BLK_DEV_INITRD) instead of #ifdef Geert Uytterhoeven
2021-08-11  8:51 ` [PATCH v5 6/9] riscv: Remove non-standard linux,elfcorehdr handling Geert Uytterhoeven
2021-08-11  8:51 ` [PATCH v5 7/9] arm64: kdump: Remove custom " Geert Uytterhoeven
2021-08-23 12:55   ` Catalin Marinas
2021-08-11  8:51 ` [PATCH v5 8/9] arm64: kdump: Remove custom linux,usable-memory-range handling Geert Uytterhoeven
2021-08-23 12:55   ` Catalin Marinas
2021-08-11  8:51 ` [PATCH v5 9/9] ARM: uncompress: Parse "linux,usable-memory-range" DT property Geert Uytterhoeven
2021-08-15 15:25 ` [PATCH v5 0/9] Add generic support for kdump DT properties Rob Herring
2021-08-23 10:13   ` Geert Uytterhoeven
2021-08-23 14:52     ` Rob Herring
2021-08-24 11:55       ` Geert Uytterhoeven
2021-08-24 22:43         ` Rob Herring

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