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From: David Gibson <david@gibson.dropbear.id.au>
To: Bruno Piazera Larsen <bruno.larsen@eldorado.org.br>
Cc: farosas@linux.ibm.com,
	Richard Henderson <richard.henderson@linaro.org>,
	qemu-devel@nongnu.org, Greg Kurz <groug@kaod.org>,
	lucas.araujo@eldorado.org.br, fernando.valle@eldorado.org.br,
	qemu-ppc@nongnu.org, matheus.ferst@eldorado.org.br,
	luis.pires@eldorado.org.br
Subject: Re: [PATCH v2 1/2] target/ppc: fix address translation bug for radix mmus
Date: Wed, 16 Jun 2021 16:16:45 +1000	[thread overview]
Message-ID: <YMmXTRIGAJs6GRXi@yekko> (raw)
In-Reply-To: <0b052edd-99fe-fd68-fb19-6d295c4119e9@eldorado.org.br>

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On Tue, Jun 15, 2021 at 09:25:06AM -0300, Bruno Piazera Larsen wrote:
> 
> On 15/06/2021 00:20, Richard Henderson wrote:
> > On 6/14/21 6:41 PM, David Gibson wrote:
> > > I think move these to mmu-book3s-v3.h, since they're correct for both
> > > the radix and hash sides of the modern book3s mmu.
> > 
> > They're also correct for all non-booke mmus, e.g. hash32 and 6xx, which
> > is why I recommended internal.h (or some new mmu-internal.h).
> > 
> > While neither hash32 nor 6xx have HV, and thus there is no second tlb
> > bug, it would still be More Correct to use mmu_idx instead of direct
> > references to msr_pr et al.
> yeah, I agree that I should change the documentation. Before I send a new
> version with everything corrected, I wanna make sure if I should leave them
> in internal and use it for hash32 and 6xx MMUs, or do I put them in
> mmu-book3s-v3.h, since only radix64 has that the bug?

Put them in mmu-book3s-v3.h for the time being, we can move it later
if it makes sense.  I want to move to a mode model-first approach to
the softmmu code, so I think of these values as logically
per-MMU-style, even if they are the same in practice for many of them.

-- 
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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  reply	other threads:[~2021-06-16  6:53 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 19:16 [PATCH v2 1/2] target/ppc: fix address translation bug for radix mmus Bruno Larsen (billionai)
2021-06-14 19:16 ` [RFC PATCH v2 2/2] target/ppc: make gdb able to translate priviledged addresses Bruno Larsen (billionai)
2021-06-14 19:37   ` Philippe Mathieu-Daudé
2021-06-15  1:41     ` David Gibson
2021-06-15 12:12     ` Bruno Piazera Larsen
2021-06-14 21:25   ` Fabiano Rosas
2021-06-15 11:59     ` Bruno Piazera Larsen
2021-06-14 22:37   ` Richard Henderson
2021-06-15 11:32     ` Bruno Piazera Larsen
2021-06-15 20:00       ` Richard Henderson
2021-06-15 21:37         ` Fabiano Rosas
2021-06-16 12:07           ` Bruno Piazera Larsen
2021-06-16  6:18       ` David Gibson
2021-06-14 19:29 ` [PATCH v2 1/2] target/ppc: fix address translation bug for radix mmus Greg Kurz
2021-06-14 21:04 ` Fabiano Rosas
2021-06-15  1:18   ` David Gibson
2021-06-15  1:41 ` David Gibson
2021-06-15  3:20   ` Richard Henderson
2021-06-15 12:25     ` Bruno Piazera Larsen
2021-06-16  6:16       ` David Gibson [this message]
2021-06-15 13:57 ` Cédric Le Goater
2021-06-15 14:14   ` Philippe Mathieu-Daudé
2021-06-15 14:57   ` Bruno Piazera Larsen
2021-06-15 15:57     ` Cédric Le Goater

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