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From: Alexandre Ghiti <alex@ghiti.fr>
To: Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>, Zong Li <zong.li@sifive.com>,
	Anup Patel <anup@brainfault.org>, Christoph Hellwig <hch@lst.de>,
	linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Alexandre Ghiti <alex@ghiti.fr>
Subject: [RFC PATCH 3/7] riscv: Simplify MAXPHYSMEM config
Date: Sun, 22 Mar 2020 07:00:24 -0400
Message-ID: <20200322110028.18279-4-alex@ghiti.fr> (raw)
In-Reply-To: <20200322110028.18279-1-alex@ghiti.fr>

Either the user specifies maximum physical memory size of 2GB or the
user lives with the system constraint which is 128GB in 64BIT for now.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
---
 arch/riscv/Kconfig | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 8e4b1cbcf2c2..a475c78e66bc 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -104,7 +104,7 @@ config PAGE_OFFSET
 	default 0xC0000000 if 32BIT && MAXPHYSMEM_2GB
 	default 0x80000000 if 64BIT && !MMU
 	default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB
-	default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
+	default 0xffffffe000000000 if 64BIT && !MAXPHYSMEM_2GB
 
 config ARCH_FLATMEM_ENABLE
 	def_bool y
@@ -216,19 +216,11 @@ config MODULE_SECTIONS
 	bool
 	select HAVE_MOD_ARCH_SPECIFIC
 
-choice
-	prompt "Maximum Physical Memory"
-	default MAXPHYSMEM_2GB if 32BIT
-	default MAXPHYSMEM_2GB if 64BIT && CMODEL_MEDLOW
-	default MAXPHYSMEM_128GB if 64BIT && CMODEL_MEDANY
-
-	config MAXPHYSMEM_2GB
-		bool "2GiB"
-	config MAXPHYSMEM_128GB
-		depends on 64BIT && CMODEL_MEDANY
-		bool "128GiB"
-endchoice
-
+config MAXPHYSMEM_2GB
+	bool "Maximum Physical Memory 2GiB"
+	default y if 32BIT
+	default y if 64BIT && CMODEL_MEDLOW
+	default n
 
 config SMP
 	bool "Symmetric Multi-Processing"
-- 
2.20.1



  parent reply index

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-22 11:00 [RFC PATCH 0/7] Introduce sv48 support Alexandre Ghiti
2020-03-22 11:00 ` [RFC PATCH 1/7] riscv: Get rid of compile time logic with MAX_EARLY_MAPPING_SIZE Alexandre Ghiti
2020-03-26  6:10   ` Anup Patel
2020-04-03 15:17   ` Palmer Dabbelt
2020-04-07  5:12     ` Alex Ghiti
2020-03-22 11:00 ` [RFC PATCH 2/7] riscv: Allow to dynamically define VA_BITS Alexandre Ghiti
2020-03-26  6:12   ` Anup Patel
2020-04-03 15:17   ` Palmer Dabbelt
2020-04-07  5:12     ` Alex Ghiti
2020-03-22 11:00 ` Alexandre Ghiti [this message]
2020-03-26  6:22   ` [RFC PATCH 3/7] riscv: Simplify MAXPHYSMEM config Anup Patel
2020-03-26  6:34   ` Anup Patel
2020-04-03 15:53   ` Palmer Dabbelt
2020-04-07  5:13     ` Alex Ghiti
2020-03-22 11:00 ` [RFC PATCH 4/7] riscv: Implement sv48 support Alexandre Ghiti
2020-03-26  7:00   ` Anup Patel
2020-03-31 16:31     ` Alex Ghiti
2020-04-03 15:53   ` Palmer Dabbelt
2020-04-07  5:14     ` Alex Ghiti
2020-04-07  5:56       ` Anup Patel
2020-04-08  4:39         ` Alex Ghiti
2020-04-08  5:06           ` Anup Patel
2020-03-22 11:00 ` [RFC PATCH 5/7] riscv: Use pgtable_l4_enabled to output mmu type in cpuinfo Alexandre Ghiti
2020-03-26  7:01   ` Anup Patel
2020-04-03 15:53   ` Palmer Dabbelt
2020-04-07  5:14     ` Alex Ghiti
2020-03-22 11:00 ` [RFC PATCH 6/7] dt-bindings: riscv: Remove "riscv, svXX" property from device-tree Alexandre Ghiti
2020-03-26  7:03   ` Anup Patel
2020-04-03 15:53   ` Palmer Dabbelt
2020-04-07  5:14     ` Alex Ghiti
2020-03-22 11:00 ` [RFC PATCH 7/7] riscv: Explicit comment about user virtual address space size Alexandre Ghiti
2020-03-26  7:05   ` Anup Patel
2020-04-03 15:53   ` Palmer Dabbelt
2020-04-07  5:15     ` Alex Ghiti
2020-03-31 19:53 ` [RFC PATCH 0/7] Introduce sv48 support Palmer Dabbelt

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