linux-kernel - Re: [PATCH 1/3] mm: vmalloc: export __vmalloc_node

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Message-ID: <b3d6d20d-1b14-447f-a6b2-aa7712df1156@assembler.cz>
Date: Fri, 19 Jul 2024 21:59:37 +0200
From: Rudolf Marek <r.marek@...embler.cz>
To: Mary Strodl <mstrodl@...edom.csh.rit.edu>,
 Christian Gmeiner <christian.gmeiner@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
 Matthew Wilcox <willy@...radead.org>, Christoph Hellwig <hch@...radead.org>,
 Mary Strodl <mstrodl@....rit.edu>, linux-kernel@...r.kernel.org,
 urezki@...il.com, linux-mm@...ck.org, lee@...nel.org, andi.shyti@...nel.org,
 linux-i2c@...r.kernel.org, s.hauer@...gutronix.de
Subject: Re: [PATCH 1/3] mm: vmalloc: export __vmalloc_node_range

Hi,

Dne 19. 07. 24 v 13:58 Mary Strodl napsal(a):
> I think this is good discussion, thanks for sharing your thoughts
> everybody.

I would suggest to simply run the BIOS code of this interface in usermode. Sort of similar to VM86 VESA stuff.
Last time I looked into this it used STI/CLI/RDMSR/WRMSR and couple of I/O ports and cf8/cfc for PCI.

Thanks,
Rudolf