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Re: [PATCH v4] target/ppc: fix Hash64 MMU update of PTE bit R
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From: |
David Gibson |
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Subject: |
Re: [PATCH v4] target/ppc: fix Hash64 MMU update of PTE bit R |
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Date: |
Wed, 1 Dec 2021 10:42:08 +1100 |
On Tue, Nov 30, 2021 at 09:44:58AM +0100, Cédric le Goater wrote:
> On 11/30/21 01:30, David Gibson wrote:
> > On Mon, Nov 29, 2021 at 03:57:51PM -0300, Leandro Lupori wrote:
> > > When updating the R bit of a PTE, the Hash64 MMU was using a wrong byte
> > > offset, causing the first byte of the adjacent PTE to be corrupted.
> > > This caused a panic when booting FreeBSD, using the Hash MMU.
> > >
> > > Fixes: a2dd4e83e76b ("ppc/hash64: Rework R and C bit updates")
> > > Signed-off-by: Leandro Lupori <leandro.lupori@eldorado.org.br>
> >
> > Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
>
> Sorry, I didn't wait for your Rb because the patch was a good candidate
> for -rc3. It is merged now.
No worries.
>
> > Thanks for your patience with our nitpicking :).
>
> Yes,
>
> Here is another QEMU bug found by FreeBSD :
> 427ef2ee-6871-0d27-f485-90ad142f6266@kaod.org/">https://lore.kernel.org/qemu-devel/427ef2ee-6871-0d27-f485-90ad142f6266@kaod.org/
>
> It would be interesting to boot directly the PowerNV machine from a
> FreeBSB kernel and a minimum inirtd without using the skiroot images
> and an iso. Are images available ?
>
> Thanks.
>
> C.
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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