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Re: [PATCH 1/9] alpha: Convert mapping routine to rely on physical address
- To: Magnus Lindholm <linmag7@xxxxxxxxx>
- From: Jason Gunthorpe <jgg@xxxxxxxxxx>
- Date: Tue, 23 Sep 2025 20:53:18 -0300
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- Cc: Leon Romanovsky <leon@xxxxxxxxxx>, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>, Andreas Larsson <andreas@xxxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, Geoff Levand <geoff@xxxxxxxxxxxxx>, Helge Deller <deller@xxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, iommu@xxxxxxxxxxxxxxx, "James E.J. Bottomley" <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx>, Jason Wang <jasowang@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, linux-alpha@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, Madhavan Srinivasan <maddy@xxxxxxxxxxxxx>, Matt Turner <mattst88@xxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, "Michael S. Tsirkin" <mst@xxxxxxxxxx>, Richard Henderson <richard.henderson@xxxxxxxxxx>, sparclinux@xxxxxxxxxxxxxxx, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, virtualization@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 23 Sep 2025 23:53:43 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Tue, Sep 23, 2025 at 09:34:31PM +0200, Magnus Lindholm wrote:
> >
> > I will try to setup Alpha architecture in QEMU in following days, but
> > would like to ask first. Did you test alpha on clean v6.17-rc5 (without
> > my patches) as a reference?
> >
> I'm running now on a fresh git pull from today so it's more like a
> 6.17-rc7. So no problems running the latest git at least. I can
> dig deeper into this to see if we can figure this one out. First
> of all, is this alpha specific?
I spent a bit of time looking at the alpha patch and could not spot a
typo, it looked OK to me. I was worried for a bit that virt_to_phys()
vs __pa() were different, but I could not find a difference.
Suggest testing the same branch with the alpha patch reverted just to
rule out any issue in the core code. If it reproduces suggest to
bisect Leon's branch.
Thanks,
Jason
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