From 8b7fbd6c36b868ad16cb7065dbba93ac342479af Mon Sep 17 00:00:00 2001
From: Peter Maydell <peter.maydell@linaro.org>
Date: Thu, 23 May 2019 14:47:43 +0100
Subject: [PATCH] hw/intc/arm_gicv3: Fix write of ICH_VMCR_EL2.{VBPR0, VBPR1}
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In ich_vmcr_write() we enforce "writes of BPR fields to less than
their minimum sets them to the minimum" by doing a "read vbpr and
write it back" operation. A typo here meant that we weren't handling
writes to these fields correctly, because we were reading from VBPR0
but writing to VBPR1.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190520162809.2677-4-peter.maydell@linaro.org
---
hw/intc/arm_gicv3_cpuif.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/intc/arm_gicv3_cpuif.c b/hw/intc/arm_gicv3_cpuif.c
index cbad6037f1..000bdbd624 100644
--- a/hw/intc/arm_gicv3_cpuif.c
+++ b/hw/intc/arm_gicv3_cpuif.c
@@ -2366,7 +2366,7 @@ static void ich_vmcr_write(CPUARMState *env, const ARMCPRegInfo *ri,
/* Enforce "writing BPRs to less than minimum sets them to the minimum"
* by reading and writing back the fields.
*/
- write_vbpr(cs, GICV3_G1, read_vbpr(cs, GICV3_G0));
+ write_vbpr(cs, GICV3_G0, read_vbpr(cs, GICV3_G0));
write_vbpr(cs, GICV3_G1, read_vbpr(cs, GICV3_G1));
gicv3_cpuif_virt_update(cs);