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[PATCH 1/1] xlnx-versal-ospi: disable reentrancy detection for iomem_dac


From: Sai Pavan Boddu
Subject: [PATCH 1/1] xlnx-versal-ospi: disable reentrancy detection for iomem_dac
Date: Tue, 5 Dec 2023 15:38:02 +0530

The OSPI DMA reads flash data through the OSPI linear address space (the
iomem_dac region), because of this the reentrancy guard introduced in
commit a2e1753b ("memory: prevent dma-reentracy issues") is disabled for
the memory region.

Signed-off-by: Sai Pavan Boddu <sai.pavan.boddu@amd.com>
---
 hw/ssi/xlnx-versal-ospi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/ssi/xlnx-versal-ospi.c b/hw/ssi/xlnx-versal-ospi.c
index 1a61679c2f..5123e7dde7 100644
--- a/hw/ssi/xlnx-versal-ospi.c
+++ b/hw/ssi/xlnx-versal-ospi.c
@@ -1772,6 +1772,7 @@ static void xlnx_versal_ospi_init(Object *obj)
     memory_region_init_io(&s->iomem_dac, obj, &ospi_dac_ops, s,
                           TYPE_XILINX_VERSAL_OSPI "-dac", 0x20000000);
     sysbus_init_mmio(sbd, &s->iomem_dac);
+    s->iomem_dac.disable_reentrancy_guard = true;
 
     sysbus_init_irq(sbd, &s->irq);
 
-- 
2.25.1




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