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

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Message-Id: <77e73a01-9f7e-475b-a810-278f931910ed@app.fastmail.com>
Date: Thu, 18 Dec 2025 14:11:35 +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 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 Thu, Dec 18, 2025, at 10:40, Leon Romanovsky wrote:
> 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.

The fix is available here
https://lore.kernel.org/all/20251218-fix-parisc-conversion-v1-1-4a04d26b0168@nvidia.com/T/#u

Thanks

>
>> 
>> Guenter