linux-kernel - Re: [PATCH v7 01/14] MIPS: spaces: Define a couple of handy macros

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Date: Thu, 8 Feb 2024 13:14:17 +0100
From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To: Gregory CLEMENT <gregory.clement@...tlin.com>
Cc: Paul Burton <paulburton@...nel.org>, linux-mips@...r.kernel.org,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
	Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Théo Lebrun <theo.lebrun@...tlin.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v7 01/14] MIPS: spaces: Define a couple of handy macros

On Mon, Feb 05, 2024 at 04:34:47PM +0100, Gregory CLEMENT wrote:
> Define KSEGX_SIZE to represent the size of each KSEG segment.
> 
> Introduce CKSEG0ADDR_OR_64BIT and CKSEG1ADDR_OR_64BIT to get an XPHYS
> address in 64bits and CKSEG[01]ADDR() in 32 bits mode.
> 
> Co-developed-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
> ---
>  arch/mips/include/asm/addrspace.h           | 5 +++++
>  arch/mips/include/asm/mach-generic/spaces.h | 4 ++++
>  2 files changed, 9 insertions(+)
> 
> diff --git a/arch/mips/include/asm/addrspace.h b/arch/mips/include/asm/addrspace.h
> index 59a48c60a065c..03a5e2c8b5dc9 100644
> --- a/arch/mips/include/asm/addrspace.h
> +++ b/arch/mips/include/asm/addrspace.h
> @@ -47,6 +47,11 @@
>   */
>  #define KSEGX(a)		((_ACAST32_(a)) & _ACAST32_(0xe0000000))
>  
> +/*
> + * Gives the size of each kernel segment
> + */
> +#define KSEGX_SIZE		0x20000000

well this is the KSEG size for 32bit and defined in a common section,
so better use CSEGX_SIZE

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]