linux-kernel - Re: [PATCH 1/9] alpha: Convert mapping routine to rely on physical address

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Message-ID: <CA+=Fv5TF+RTPEkQEmVd0_=B9xbqKycLz3ck3UwcPDqacezYfFQ@mail.gmail.com>
Date: Sun, 28 Sep 2025 12:23:48 +0200
From: Magnus Lindholm <linmag7@...il.com>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: Leon Romanovsky <leon@...nel.org>, Marek Szyprowski <m.szyprowski@...sung.com>, 
	Andreas Larsson <andreas@...sler.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "David S. Miller" <davem@...emloft.net>, 
	Geoff Levand <geoff@...radead.org>, Helge Deller <deller@....de>, Ingo Molnar <mingo@...hat.com>, 
	iommu@...ts.linux.dev, 
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, Jason Wang <jasowang@...hat.com>, 
	Juergen Gross <jgross@...e.com>, linux-alpha@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, 
	linuxppc-dev@...ts.ozlabs.org, Madhavan Srinivasan <maddy@...ux.ibm.com>, 
	Matt Turner <mattst88@...il.com>, Michael Ellerman <mpe@...erman.id.au>, 
	"Michael S. Tsirkin" <mst@...hat.com>, Richard Henderson <richard.henderson@...aro.org>, 
	sparclinux@...r.kernel.org, Stefano Stabellini <sstabellini@...nel.org>, 
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Thomas Gleixner <tglx@...utronix.de>, 
	virtualization@...ts.linux.dev, x86@...nel.org, 
	xen-devel@...ts.xenproject.org
Subject: Re: [PATCH 1/9] alpha: Convert mapping routine to rely on physical address

> After reverting the above commits, I'm able to build a working kernel,
> that is, no filesystem corruption occurs. I'll take a closer look at this
> after the weekend.
>

Short update,  It is enough to revert the following commits, in order to
have a working kernel on alpha:

e78a9d72517a88faa6f16dab4d1c6f966ed378ae
(dma-mapping: remove unused map_page callback)

d459e3b80ad1c81bf596d63d2e3347cf8c7bb0d9
(alpha: Convert mapping routine to rely on physical address)


/Magnus