From: Ethan Chen via <qemu-devel@nongnu.org>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: <qemu-devel@nongnu.org>, <richard.henderson@linaro.org>,
<pbonzini@redhat.com>, <peterx@redhat.com>, <david@redhat.com>,
<philmd@linaro.org>
Subject: Re: [RFC PATCH] memory: Introduce memory region fetch operation
Date: Thu, 13 Jun 2024 10:46:32 +0800 [thread overview]
Message-ID: <ZmpdiB2blfm63fU1@ethan84-VirtualBox> (raw)
In-Reply-To: <CAFEAcA9W1EN7eO+qa6s9a870s8Zm-mD3T0mxRUY5hjY_-ZE4bQ@mail.gmail.com>
On Wed, Jun 12, 2024 at 01:43:41PM +0100, Peter Maydell wrote:
>
> On Wed, 12 Jun 2024 at 10:02, Ethan Chen via <qemu-devel@nongnu.org> wrote:
> >
> > Allow the memory region to have different behaviors for read and fetch
> > operations.
> >
> > For example RISCV IOPMP will raise interrupt when cpu try to fetch a
> > non-excutable region.
>
> It actually raises an interrupt rather than it being a permissions fault?
Device can return bus error, interrupt or success with fabricated data.
>
> > If fetch operation of a memory region is not implemented, it still uses the
> > read operation for fetch.
>
> This patch should probably be part of the series with the device that
> needs it.
I will add this patch to IOPMP patch series.
Thanks,
Ethan
prev parent reply other threads:[~2024-06-13 2:47 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-06-12 9:01 [RFC PATCH] memory: Introduce memory region fetch operation Ethan Chen via
2024-06-12 12:43 ` Peter Maydell
2024-06-13 2:46 ` Ethan Chen via [this message]
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