linux-kernel - Re: [PATCH v5 09/14] parisc: Convert DMA map_page to map

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Message-ID: <20251218084002.GD39046@unreal>
Date: Thu, 18 Dec 2025 10:40:02 +0200
From: Leon Romanovsky <leon@...nel.org>
To: Guenter Roeck <linux@...ck-us.net>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Robin Murphy <robin.murphy@....com>,
	Russell King <linux@...linux.org.uk>,
	Juergen Gross <jgross@...e.com>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Oleksandr Tyshchenko <oleksandr_tyshchenko@...m.com>,
	Richard Henderson <richard.henderson@...aro.org>,
	Matt Turner <mattst88@...il.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	"James E.J. Bottomley" <James.Bottomley@...senpartnership.com>,
	Helge Deller <deller@....de>,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	Geoff Levand <geoff@...radead.org>,
	"David S. Miller" <davem@...emloft.net>,
	Andreas Larsson <andreas@...sler.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org,
	"H. Peter Anvin" <hpa@...or.com>, iommu@...ts.linux.dev,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	xen-devel@...ts.xenproject.org, linux-alpha@...r.kernel.org,
	linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, sparclinux@...r.kernel.org,
	Jason Gunthorpe <jgg@...pe.ca>, Jason Gunthorpe <jgg@...dia.com>
Subject: Re: [PATCH v5 09/14] parisc: Convert DMA map_page to map_phys
 interface [qemu test failure]

On Wed, Dec 17, 2025 at 04:17:38AM -0800, Guenter Roeck wrote:
> Hi,
> 
> On Wed, Oct 15, 2025 at 12:12:55PM +0300, Leon Romanovsky wrote:
> > From: Leon Romanovsky <leonro@...dia.com>
> > 
> > Perform mechanical conversion from .map_page to .map_phys callback.
> > 
> > Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> > Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> 
> This patch causes all my 32-bit parisc qemu tests with C3700 machine
> to fail. Network interface tests fail, and all boot attempts from
> any kind of hard drive (scsi, usb) fail with this patch in the tree.

Thanks for the report. I have a fix ready; I'll clean it up and send it out
by EOD.

> 
> Guenter