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RE: [PATCH] hw/nios2: Update interrupt request when CR_STATUS_PIE disabl


From: Wu, Wentong
Subject: RE: [PATCH] hw/nios2: Update interrupt request when CR_STATUS_PIE disabled
Date: Fri, 12 Jun 2020 13:43:57 +0000

Hi,
Can any body help review this patch ? Thanks in advance!

BR

-----Original Message-----
From: Wu, Wentong <wentong.wu@intel.com> 
Sent: Thursday, June 11, 2020 4:13 PM
To: qemu-devel@nongnu.org
Cc: qemu-trivial@nongnu.org; crwulff@gmail.com; marex@denx.de; 
thuth@redhat.com; Wu, Wentong <wentong.wu@intel.com>
Subject: [PATCH] hw/nios2: Update interrupt request when CR_STATUS_PIE disabled

Update interrupt request when external interupt pends for STATUS_PIE disabled. 
Otherwise on icount enabled nios2 target there will be cpu abort when guest 
code changes state register with wrctl instruction.

Signed-off-by: Wentong Wu <wentong.wu@intel.com>
---
 hw/nios2/cpu_pic.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/nios2/cpu_pic.c b/hw/nios2/cpu_pic.c index 1c1989d5..2abc8fa8 
100644
--- a/hw/nios2/cpu_pic.c
+++ b/hw/nios2/cpu_pic.c
@@ -42,6 +42,8 @@ static void nios2_pic_cpu_handler(void *opaque, int irq, int 
level)
         } else if (!level) {
             env->irq_pending = 0;
             cpu_reset_interrupt(cs, type);
+        } else {
+            cs->interrupt_request |= type;
         }
     } else {
         if (level) {
--
2.21.3




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