diff mbox series

[PULL,20/32] hw/intc/arm_gicv3_its: Don't clear GITS_CREADR when GITS_CTLR.ENABLED is set

Message ID 20220128153009.2467560-21-peter.maydell@linaro.org
State New
Headers show
Series [PULL,01/32] Update copyright dates to 2022 | expand

Commit Message

Peter Maydell Jan. 28, 2022, 3:29 p.m. UTC 
The current ITS code clears GITS_CREADR when GITS_CTLR.ENABLED is set.
This is not correct -- guest code can validly clear ENABLED and then
set it again and expect the ITS to continue processing where it left
off. Remove the erroneous assignment.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220122182444.724087-5-peter.maydell@linaro.org
---
 hw/intc/arm_gicv3_its.c | 1 -
 1 file changed, 1 deletion(-)
diff mbox series

Patch

diff --git a/hw/intc/arm_gicv3_its.c b/hw/intc/arm_gicv3_its.c
index 67f12d98af3..1763ba4a671 100644
--- a/hw/intc/arm_gicv3_its.c
+++ b/hw/intc/arm_gicv3_its.c
@@ -853,7 +853,6 @@  static bool its_writel(GICv3ITSState *s, hwaddr offset,
             s->ctlr |= R_GITS_CTLR_ENABLED_MASK;
             extract_table_params(s);
             extract_cmdq_params(s);
-            s->creadr = 0;
             process_cmdq(s);
         } else {
             s->ctlr &= ~R_GITS_CTLR_ENABLED_MASK;