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Re: Re%3A [PATCH v4 1%2F2] hw%2Fwatchdog%3A Implement SBSA watchdog devi

From: Peter Maydell
Subject: Re: Re%3A [PATCH v4 1%2F2] hw%2Fwatchdog%3A Implement SBSA watchdog device&In-Reply-To=<CAD8XO3YmTC7fzxttg%3DQLMpJbg7uLogatxN7q7vf-iGZjyQLjjQ%40mail.gmail.com>
Date: Fri, 9 Oct 2020 18:51:17 +0100

On Fri, 9 Oct 2020 at 18:30, Shashi Mallela <shashi.mallela@linaro.org> wrote:
> The value being returned here is 0 (initialized to 0 at the beginning of read 
> function).
> I have seen similar practices being followed in other qemu implementations 
> like for example bcm2835_dma_read() in 
> qemu/hw/dma/bcm2835_dma.c,a9_scu_read() in qemu/hw/misc/a9scu.c.
> Please confirm if you would still like to add specific value like 0xdeadbeef 
> for bad read offset.

Judging by the subject line you've mangled the headers on this
email so I'm not sure exactly what this was a reply to,
but in general QEMU doesn't do that kind of "return
specific marker values for bad register offsets". We
typically log it with a qemu_log_mask(LOG_GUEST_ERROR) and
return 0 (unless the h/w does something else).

-- PMM

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