From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Gregory CLEMENT <gregory.clement@bootlin.com>
Cc: "Paul Burton" <paulburton@kernel.org>,
linux-mips@vger.kernel.org, "Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
"Vladimir Kondratiev" <vladimir.kondratiev@intel.com>,
"Tawfik Bayouk" <tawfik.bayouk@mobileye.com>,
"Alexandre Belloni" <alexandre.belloni@bootlin.com>,
"Théo Lebrun" <theo.lebrun@bootlin.com>,
"Thomas Petazzoni" <thomas.petazzoni@bootlin.com>
Subject: Re: [PATCH 02/11] MIPS: use virtual addresses from xkphys for MIPS64
Date: Thu, 12 Oct 2023 17:34:56 +0200 [thread overview]
Message-ID: <ZSgSIPxrnx2FmHsk@alpha.franken.de> (raw)
In-Reply-To: <20231004161038.2818327-3-gregory.clement@bootlin.com>
On Wed, Oct 04, 2023 at 06:10:29PM +0200, Gregory CLEMENT wrote:
> From: Vladimir Kondratiev <vladimir.kondratiev@intel.com>
>
> Now 64-bit MIPS uses 32-bit compatible segments KSEG0 and KSEG1
> to trivially map first 1/2 GByte of physical memory. This memory
> used to run kernel. This mean, one should have memory installed
> in this area in order for Linux to work.
>
> Kconfig CONFIG_USE_XKPHYS introduced; it adds support for kernel
> to use virtual addresses from the XKPHYS segment for both cached
> and uncached access. XKPHYS allows to access 2^48 bytes of
> memory, thus allowing kernel to work with any memory
> configuration.
IMHO it doesn't make sense to introduce an option for a generic
kernel, which then renders the generic kernel useless on all
platforms other then yours.
Please don't use generic, but setup a new platform for it. Hopefully
we can get rid all of the weirdness in this patch.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
next prev parent reply other threads:[~2023-10-12 15:38 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-04 16:10 [PATCH 00/11] Add support for the Mobileye EyeQ5 SoC Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 01/11] MIPS: compressed: Use correct instruction for 64 bit code Gregory CLEMENT
2023-10-05 6:40 ` Philippe Mathieu-Daudé
2023-10-24 1:49 ` Florian Fainelli
2023-10-04 16:10 ` [PATCH 02/11] MIPS: use virtual addresses from xkphys for MIPS64 Gregory CLEMENT
2023-10-12 15:34 ` Thomas Bogendoerfer [this message]
2023-10-22 11:52 ` Jiaxun Yang
2023-10-22 11:39 ` Jiaxun Yang
2023-10-23 15:45 ` Gregory CLEMENT
2023-10-22 16:42 ` Jiaxun Yang
2023-10-24 16:08 ` Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 03/11] MIPS: support RAM beyond 32-bit Gregory CLEMENT
2023-10-06 11:21 ` Arnd Bergmann
2023-10-07 20:14 ` Jiaxun Yang
2023-10-09 15:59 ` Gregory CLEMENT
2023-10-10 8:55 ` Jiaxun Yang
2023-10-11 14:46 ` Gregory CLEMENT
2023-10-12 20:40 ` Jiaxun Yang
2023-10-24 9:05 ` Maciej W. Rozycki
2023-10-04 16:10 ` [PATCH 04/11] dt-bindings: Add vendor prefix for Mobileye Vision Technologies Ltd Gregory CLEMENT
2023-10-05 6:34 ` Philippe Mathieu-Daudé
2023-10-06 16:32 ` Rob Herring
2023-10-04 16:10 ` [PATCH 05/11] dt-bindings: mips: cpu: Add I-Class I6500 Multiprocessor Core Gregory CLEMENT
2023-10-05 6:31 ` Philippe Mathieu-Daudé
2023-10-05 14:39 ` Serge Semin
2023-10-05 14:51 ` Gregory CLEMENT
2023-10-05 15:23 ` Serge Semin
2023-10-06 10:48 ` Arnd Bergmann
2023-10-06 16:40 ` Rob Herring
2023-10-09 15:32 ` Gregory CLEMENT
2023-10-09 18:48 ` Arnd Bergmann
2023-10-10 10:13 ` Serge Semin
2023-10-05 14:47 ` Sergio Paracuellos
2023-10-04 16:10 ` [PATCH 06/11] dt-bindings: mips: Add bindings for Mobileye SoCs Gregory CLEMENT
2023-10-04 16:47 ` Rob Herring
2023-10-05 14:55 ` Gregory CLEMENT
2023-10-06 16:50 ` Rob Herring
2023-10-04 16:10 ` [PATCH 07/11] dt-bindings: mfd: syscon: Document EyeQ5 OLB Gregory CLEMENT
2023-10-06 16:54 ` Rob Herring
2023-10-09 15:49 ` Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 08/11] MIPS: mobileye: Add EyeQ5 dtsi Gregory CLEMENT
2023-10-04 16:41 ` Rob Herring
2023-10-05 15:17 ` Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 09/11] MIPS: mobileye: Add EPM5 device tree Gregory CLEMENT
2023-10-06 11:18 ` Arnd Bergmann
2023-10-09 14:51 ` Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 10/11] MIPS: generic: Add support for Mobileye EyeQ5 Gregory CLEMENT
2023-10-05 0:08 ` kernel test robot
2023-10-06 14:47 ` Arnd Bergmann
2023-10-09 14:58 ` Gregory CLEMENT
2023-10-04 16:10 ` [PATCH 11/11] MAINTAINERS: Add entry for Mobileye MIPS SoCs Gregory CLEMENT
2023-10-06 11:11 ` Arnd Bergmann
2023-10-09 15:06 ` Gregory CLEMENT
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