From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-arm <qemu-arm@nongnu.org>,
QEMU Developers <qemu-devel@nongnu.org>,
Changbin Du <changbin.du@gmail.com>
Subject: Re: [PATCH] arm/monitor: Add support for 'info tlb' command
Date: Fri, 13 Nov 2020 13:13:42 +0000 [thread overview]
Message-ID: <20201113131342.GM3251@work-vm> (raw)
In-Reply-To: <CAFEAcA-3A2s3b5+kVPmDfPxG=gypOhD8agrqx0mUYt3gZKbMNg@mail.gmail.com>
* Peter Maydell (peter.maydell@linaro.org) wrote:
> On Fri, 13 Nov 2020 at 09:59, Changbin Du <changbin.du@gmail.com> wrote:
> >
> > This adds hmp 'info tlb' command support for the arm platform.
> > The limitation is that this only implements a page walker for
> > ARMv8-A AArch64 Long Descriptor format, 32bit addressing is
> > not supported yet.
>
> "info tlb" needs its own entirely independent implementation
> of a page-table walk? I see this is how x86 has done it ,but
> it seems like a recipe for the info command being perpetually
> behind what we actually implement...
I think the challenge is you want 'info tlb' to be quite easy
to read from a debuggers point of view and robust at pointing out
things that are odd; I'd hope at least you can use most of the macros
to extract fields etc
Dave
> thanks
> -- PMM
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
next prev parent reply other threads:[~2020-11-13 13:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 9:58 [PATCH] arm/monitor: Add support for 'info tlb' command Changbin Du
2020-11-13 10:03 ` no-reply
2020-11-13 10:11 ` Peter Maydell
2020-11-13 13:13 ` Dr. David Alan Gilbert [this message]
2020-11-14 14:58 ` Changbin Du
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