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[PULL,01/22] allwinner-h3: Switch to SMC as PSCI conduit

Message ID 20210930151201.9407-2-peter.maydell@linaro.org
State Accepted
Commit 01e75d87834a5188f98defa2d1f88b69dca7e9a0
Headers show
Series target-arm queue | expand

Commit Message

Peter Maydell Sept. 30, 2021, 3:11 p.m. UTC 
From: Alexander Graf <agraf@csgraf.de>


The Allwinner H3 SoC uses Cortex-A7 cores which support virtualization.
However, today we are configuring QEMU to use HVC as PSCI conduit.

That means HVC calls get trapped into QEMU instead of the guest's own
emulated CPU and thus break the guest's ability to execute virtualization.

Fix this by moving to SMC as conduit, freeing up HYP completely to the VM.

Signed-off-by: Alexander Graf <agraf@csgraf.de>

Message-id: 20210920203931.66527-1-agraf@csgraf.de
Fixes: 740dafc0ba0 ("hw/arm: add Allwinner H3 System-on-Chip")
Reviewed-by: Niek Linnenbank <nieklinnenbank@gmail.com>

Tested-by: Niek Linnenbank <nieklinnenbank@gmail.com>

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

---
 hw/arm/allwinner-h3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.20.1
diff mbox series

Patch

diff --git a/hw/arm/allwinner-h3.c b/hw/arm/allwinner-h3.c
index 27f10701453..f9b7ed18711 100644
--- a/hw/arm/allwinner-h3.c
+++ b/hw/arm/allwinner-h3.c
@@ -237,7 +237,7 @@  static void allwinner_h3_realize(DeviceState *dev, Error **errp)
 
         /* Provide Power State Coordination Interface */
         qdev_prop_set_int32(DEVICE(&s->cpus[i]), "psci-conduit",
-                            QEMU_PSCI_CONDUIT_HVC);
+                            QEMU_PSCI_CONDUIT_SMC);
 
         /* Disable secondary CPUs */
         qdev_prop_set_bit(DEVICE(&s->cpus[i]), "start-powered-off",