[Avocado-devel] [PATCH 0/1] target/arm: Fix SCR_EL3 migration issue
Philippe Mathieu-Daudé
philmd at redhat.com
Wed Feb 3 16:28:03 UTC 2021
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(-)
>
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