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

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Date: Wed, 14 Feb 2024 17:44:02 +0100
From: Gregory CLEMENT <gregory.clement@...tlin.com>
To: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
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

Thomas Bogendoerfer <tsbogend@...ha.franken.de> writes:

> 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

Done in the next series.

Thanks,

Gregory


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

-- 
Gregory Clement, Bootlin
Embedded Linux and Kernel engineering
http://bootlin.com