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From: "Philippe Mathieu-Daudé" <philmd@redhat.com>
To: avocado-devel <avocado-devel@redhat.com>
Cc: qemu-trivial@nongnu.org, peter.maydell@linaro.org,
	qemu-arm@nongnu.org, qemu-devel@nongnu.org,
	Mike Nawrocki <michael.nawrocki@gtri.gatech.edu>
Subject: Re: [PATCH 0/1] target/arm: Fix SCR_EL3 migration issue
Date: Wed, 3 Feb 2021 17:28:03 +0100	[thread overview]
Message-ID: <309537bf-6d2a-d004-4aa5-720982d944ff@redhat.com> (raw)
In-Reply-To: <20210128143102.7834-1-michael.nawrocki@gtri.gatech.edu>

Cc'ing avocado-devel for test idea.

On 1/28/21 3:31 PM, michael.nawrocki--- via wrote:
> The SCR_EL3 register reset value (0)  and the value produced when
> writing 0 via the scr_write function (set as writefn in the register
> struct) differ. This causes migration to fail.
> 
> I believe the solution is to specify a raw_writefn for that register.
> 
> Failing invocation:
> $ qemu-system-arm -machine vexpress-a9 -cpu cortex-a9 -nographic
> QEMU 5.2.0 monitor - type 'help' for more information
> (qemu) migrate "exec:cat > img"
> (qemu) q
> $ qemu-system-arm -machine vexpress-a9 -cpu cortex-a9 -nographic -incoming "exec:cat img"
> qemu-system-arm: error while loading state for instance 0x0 of device 'cpu'
> qemu-system-arm: load of migration failed: Operation not permitted
> 
> 
> Mike Nawrocki (1):
>   target/arm: Add raw_writefn to SCR_EL3 register
> 
>  target/arm/helper.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 



      parent reply	other threads:[~2021-02-03 16:32 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-28 14:31 [PATCH 0/1] target/arm: Fix SCR_EL3 migration issue michael.nawrocki--- via
2021-01-28 14:31 ` [PATCH 1/1] target/arm: Add raw_writefn to SCR_EL3 register michael.nawrocki--- via
2021-02-02 11:29   ` Peter Maydell
2021-02-03 14:50     ` michael.nawrocki--- via
2021-02-03 15:04       ` Peter Maydell
2021-02-03 16:58         ` michael.nawrocki--- via
2021-01-28 14:38 ` [PATCH 0/1] target/arm: Fix SCR_EL3 migration issue Peter Maydell
2021-02-03 16:28 ` Philippe Mathieu-Daudé [this message]

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