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[PATCH 0/1] target/arm: Fix SCR_EL3 migration issue
From: |
Mike Nawrocki |
Subject: |
[PATCH 0/1] target/arm: Fix SCR_EL3 migration issue |
Date: |
Thu, 28 Jan 2021 09:31:01 -0500 |
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(-)
--
2.20.1
- [PATCH 0/1] target/arm: Fix SCR_EL3 migration issue,
Mike Nawrocki <=